Time dependent solid mechanics comsol. For Coulomb friction, enter the Friction coefficient μ.
Time dependent solid mechanics comsol In 2D, plane stress or plane strain assumptions can be used. Mar 14, 2011 · Time dependant analysis in solid mechanics Posted Mar 14, 2011, 1:27 p. I checked all the steps and it looks exactly the same as my 2D model. We simulate the deformation of a plate subject to time-varying loads. The study here consists of a Time Dependent and Time to Frequency FFT step. Jul 26, 2011 · Hello, I have a question about Initial Stress and Strain sub-node in Solid Mechanics. The internal airflow (laminar) was simulated using the compressible Navier-Stokes equations (time-dependent study), and the structural mechanics of the PP film was modeled using equations for deformable solids (time-dependent study). For Coulomb friction, enter the Friction coefficient μ. , the history variable Hd is the maximum between the current driving force Dd and its previous-time value Hd,old. This is particularly important if the measured data used the Fahrenheit scale (denoted by [degF] in COMSOL Multiphysics). The equations solved by the Solid Mechanics interface are formulated in the material frame. I then would like to do a time dependent study to visualize the motion of the free magnet over time. sp1, 2,& 3), while the values in 2D model are logical. The case with pruning shows only a small difference when compared to the solution including all branches; however, the pruned case has a significantly lower computation time. Solving large models in time domain may be computationally intensive in terms of memory and CPU time. The Prescribed Velocity node is a constraint and overrides any other constraint on the same selection. This video shows all the steps in detail about how to simulate a 3-dimensional cantilever beam using the solid mechanics module in COMSOL. 4 1 Reply The time dependent solver is computing the solution to a possibly nonlinear system of equations at each timestep via a set of iterative techniques based upon Newton's method. In this article, we will outline different approaches you can use to improve convergence The following background information about the Time-Dependent Solver discusses these topics: The Implicit Time-Dependent Solver Algorithms and BDF vs. Solution Background The COMSOL Multiphysics Time Dependent (transient) solvers have the capability of solving a set of equations of the form: where and can be constants or nonlinear functions of and . In this article, we demonstrate how to couple the physics between multiple model components in COMSOL®. EST 6 Replies General . In the built-in Phase-Field Damage model, the Equation View shows in the picture. The following example demonstrates techniques for modeling fluid-structure interactions in COMSOL Multiphysics. There are, however, special study steps available in order to model one-way fluid-structure interaction. There are two general solvers for time-dependent problems in COMSOL Multiphysics. This, in turn, will affect the time-stepping algorithm chosen in a time-dependent solver. The Solid Mechanics interface offers the most general modeling of structural mechanics problems and is based on general principles of continuum mechanics. Also see Selecting a Stationary, Time-Dependent, or Eigenvalue Solver. Use the Damping subnode to add several types of damping to the material model. e. Oct 24, 2018 · Solid mechanics simulation in COMSOL Multiphysics William Grover 926 subscribers Subscribed Friction Parameters Select a Friction model — Coulomb or Exponential dynamic Coulomb. You find all the necessary material data inputs within the Piezoelectric Material feature under the Solid Mechanics interface, which are added automatically when you add a predefined Piezoelectricity multiphysics interface. Browse the COMSOL Learning Center for self-paced courses and articles. For this, I am Introduction This example demonstrates how to use temperature dependent materials within the Nonlinear Structural Materials Module. 3 (CFD and Solid Mechanics modules). Together with CFD Module, also turbulent flow and two-phase flow can be studied. In Part 3 of this course on structural mechanics modeling in COMSOL Multiphysics ®, we focus on performing time-dependent analysis for structural dynamics models. A Solid model is active by default on all domains. Customize COMSOL Multiphysics to meet your simulation needs with application-specific modules. The latter can only be used in a time dependent analysis, since the value of the frictional coefficient depends on the slip velocity. The module is a collection of physics interfaces for COMSOL Multiphysics that handles static, eigenfrequency, transient, frequency response, parametric, transient thermal stress, and other analyses for applications in structural mechanics, solid mechanics, and piezoelectricity. However, in the time domain, only the Lorentz force is passed from the Magnetic Fields interface to the Solid Mechanics interface, but the induced currents are not included in the formulation. Learn how to use COMSOL Multiphysics® for specific application areas. Select Solid Mechanics>Reactions>Reaction force (Spatial)>Reaction force, y component (solid. 204 Dependent Variables in Contact Analysis. Use the Damage subnode to model damage and cracking in brittle materials according to various criteria. Sep 25, 2017 · Hi, I have created a 3D model with the same boundary and initial condition as my 2D one in solid mechanics. 0 brings many updates and new features to the Structural Mechanics Module. May 6, 2020 · In this study, Steady state method is used to determine the two–dimensional transient heat conduction in a slab with an hollow shape. Jan 21, 2024 · Anyway, my simplified model is set as follows. 6 days ago · The COMSOL discussion forum covers a wide variety of simulation topics. It is the interface which contains the largest number of material models, and the most advanced boundary conditions. 191 Constraints . This feature is used for the finite element method (FEM) based interfaces and is applicable for transient, frequency domain, and stationary studies. In solid mechanics, it is used to compute the time-varying deformation and motion of solids subject to transient loads. See also Piezoelectric Losses. If an additional physics interface is added, then it is automatically added to both If the study step is geometrically nonlinear, the strain ε is the Green-Lagrange strain and the stress σ is the second Piola-Kirchhoff stress. Time-dependent analysis includes inertial forces, viscous forces, and time-varying loads. I use Time Dependent Study. Nov 8, 2025 · Time Dependent Study > Solid Mechanics + Thermal Expansion + Plasticity, unable to converge Posted Nov 8, 2025, 5:23 a. This also implies that simulations can often replace experimental measurements. In both time-dependent cases the solutions converge to the response obtained by a frequency-domain analysis. 201 Fallback Nodes for Contact. If you use the time t in any physics settings (for a subsequent time-dependent study step, for example), you can replace it for the stationary study with a global parameter or local solver constant t, to give it a fixed value. I use Viscoelastic material with Init stress and strain sub-node in a time-dependent study. Isotropic linear elastic material is assumed, with a Young's modulus of 50 kPa and Poisson's ratio of 0. The Solid Mechanics interface is based on solving the equations of motion together with a constitutive model for a solid material In the frequency domain, the formulation explicitly includes the back EMF contributions: It passes the Lorentz force from the Magnetic Fields interface to the Solid Mechanics interface and passes the structural velocity that leads to the induced electric field from the Solid Mechanics interface to the Magnetic Fields interface. should i define define t for it?. Dec 16, 2019 · hi, im quite new with Comsol and im doing an assignemnet where the force at the end of the beam keeps changing with time i have the formula, i just dont know where and how to key it in, because its a step function and there is t (time) in it. 001 [s]) Membrane mbrn 3D, 2D axisymmetric stationary; eigenfrequency; eigenfrequency, prestressed; time dependent; time dependent, modal; time dependent, modal reduced-order model; frequency domain; frequency domain, modal; frequency domain, prestressed; frequency domain, prestressed, modal; frequency domain, modal reduced-order model; response Mechanical contact can be modeled in the Solid Mechanics and Multibody Dynamics interfaces. Here in Part 2 of this course on modeling with partial differential equations (PDEs), we will have a closer look at using the Coefficient Form PDE and General Form PDE interfaces to model with general diffusion-type equations, such as Poisson's equation, the Laplace equation, and the heat equation. The default behavior of the COMSOL ® software is to assume a different scaling for each set of variables in your model. The scaling of the displacement variables can be changed to correspond to the expected deformations. Aug 20, 2025 · I am trying to reproduce the Phase-Field Damage + Solid Mechanics coupling using only Solid Mechanics together with a General Form PDE in COMSOL 6. For the solid (nonlaminated) rotor the conducting part is modeled using Ampère’s law: ------- t A 1 The Piezoelectric Effect () is a multiphysics coupling feature between the Solid Mechanics interface and the Electrostatics interface used to model a piezoelectric material. The governing equations and mathematical formulations for each of these interfaces are listed and described below. See step by step how to model the propagation of elastic waves in the time domain in COMSOL Multiphysics®. A double bar, consisting of two individual bars in adhesive contact with decohesion law specified, is fixed at the left end, while its right end is prescribed to a ramped time-dependent displacement -rm1 (t). Includes instructions and exercise files. I have an initial stationary step were my material is originally very rigid, followed by a time dependent study of a much less rigid material (I use a smaller Young's Modulus). In the Fluid-Solid Interaction interface ( ), a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. For example, finite element simulations are used extensively in safety-critical There are several interfaces in COMSOL Multiphysics ® that are frequently used for electrovibroacoustics modeling, including the Magnetic Fields, Pressure Acoustics, Solid Mechanics, and Thermoviscous Acoustics interfaces. For example, for solid mechanics analyses, the software suggests time-dependent, stationary, or eigenfrequency studies; for CFD problems, the software would only suggest time-dependent and stationary studies. 202 Solver Settings for Contact Analysis. Aug 8, 2013 · Dear all, as mentioned in the title, I would know if the change (specifically an increase) of the relative tolerance in Time Dependent solver (but also in Stationary solver, why not) will reduce the time simulation. The tangential force vector is added as force variable. In the Fluid-Solid interface ( ), a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. Use this study for a time-dependent or transient simulation using a Time-Dependent Solver for computing the solution over time. Using a time-dependent study, the Fluid-Solid Interaction, Two-Phase Flow, Phase Field, Fixed Geometry interface models bidirectional coupling between solids and the fluids. The relative tolerance (Rtol) is used in each iteration for all dependent variables. The single Gaussian Signal is applied to the piezodisk. Advanced simulations require correctly modeling the non-linear and time-dependent response of polymers, and COMSOL Multiphysics has advanced solid mechanics constitutive models to capture these effects. i have already selected time dependent study and defined other parameters as well as choosing point load. Jan 20, 2012 · Which solver for time dependent : Electromagnetic Waves + Solid Mechanics Posted Jan 20, 2012, 5:44 a. Use it for performing transient response analyses. To model a mechanical contact problem, you must do the following: • In the Fluid-Solid Interaction ( ) interface, a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. The Solid Mechanics interface supports Stationary (static), Eigenfrequency, Time Dependent (transient), Frequency Domain, and Modal solver study types as well as linear buckling. It is a true time-dependent model where the motion of the rotor is accounted for in the boundary condition between the stator and rotor geometries. Such node can be also added manually under any Solid Mechanics interface similar to all other material model features. 205 These industries extensively use Multiphysics simulation to predict product performance, optimize design, and prevent failure during service. The inertial forces in the full structural dynamics problem contain second-order time derivatives of the displacements, whereas creep and viscoelasticity only have first-order derivatives. The Piezoelectric Effect is described for The Piezoelectricity Interface. Structural Mechanics COMSOL 6. Using a time-dependent study, the Fluid–Solid Interaction, Viscoelastic Flow interface models bidirectional coupling between solids and fluids. I use Solid Mechanics from Elastic Waves and multiphysics Piezoelectric Devices. 499. In this situation, you should first solve the other physics in a time-dependent study, and then the structural mechanics problem in a subsequent stationary study step using the time t as the parameter in the auxiliary sweep. The Solid Mechanics Interface The Solid Mechanics (solid) interface (), found under the Structural Mechanics branch () when adding a physics interface, is intended for general structural analysis of 3D, 2D, or axisymmetric bodies. We also introduce damping. Together with the CFD Module, also turbulent flow and two-phase flow can be studied. Solution Background Many time-dependent problems are modeled by partial differential equations with only first derivatives with respect to time. In the frequency domain, the formulation explicitly includes the back EMF contributions: It passes the Lorentz force from the Magnetic Fields interface to the Solid Mechanics interface and passes the structural velocity that leads to the induced electric field from the Solid Mechanics interface to the Magnetic Fields interface. It is used to solve the two dimensional transient heat Transient analyses provide the time-domain response of a structure subjected to time-dependent loads. To describe time-dependent boundary conditions you can enter expressions using the built-in variable t, the time variable in COMSOL Multiphysics. Jun 21, 2022 · I want to use time dependent study (creep) in the submodel. This 5-part course provides an introduction to modeling structural mechanics using the COMSOL Multiphysics ® software and the add-on Structural Mechanics Module. EDT Structural Mechanics 3 Replies However, in the time domain, only the Lorentz force is passed from the Magnetic Fields interface to the Solid Mechanics interface, but the induced currents are not included in the formulation. Learn how to apply translations, scaling, reflection, and rotation in COMSOL Multiphysics®. This material model is available in the Solid Mechanics, Shell, Layered Shell, and Membrane interfaces, and can be used together with Linear Elastic Material, Layered Linear Elastic Material, Nonlinear Elastic Material, and Hyperelastic Material. 6 brings several updates and models to the Structural Mechanics Module. Such set-up will be an effective equivalent of the Generalized Maxwell model with fractional derivatives, which can be used in Eigenfrequency and Time Dependent study steps. Manual scaling is the default for the displacement variables. The contact analysis functionality in COMSOL Multiphysics also includes the possibility to prescribe adhesion and decohesion between the contacting objects. 4 Structural MechanicsExpand/Collapse allCOMSOL Multiphysics®AC/DC ModuleAcoustics ModuleBattery Design ModuleCFD ModuleChemical Reaction Engineering ModuleComposite Materials ModuleCorrosion ModuleElectrochemistry ModuleElectrodeposition ModuleFatigue ModuleGeomechanics ModuleHeat Transfer ModuleMEMS ModuleMetal Processing ModuleMicrofluidics ModuleMultibody The Phase Field Damage multiphysics interface () combines the Solid Mechanics and Phase Field in Solids interfaces to model the evolution of damage and cracks in deforming solids. Generalized- and Explicit Methods. In heat transfer, it is used to compute temperature changes over time. If any material in the model has a temperature dependent mass density, and From material is selected for the density, the Volume reference temperature list will appear in the Model Input section. Damping can be used in Time Dependent, Eigenfrequency, and Frequency Domain studies; for other study types the settings in the Damping subnode are ignored. How to correctly define the Jul 18, 2012 · I am using the Magnetic Field, No Currents module to calculate the force on each magnet (like the permanent magnet example in the model gallery), and the Solid Mechanics module to apply the calculated force as a body load on the free magnet. All these interfaces are available for 3D, 2D, and 2D axisymmetric geometries and can model pressure acoustics and solid mechanics in the frequency domain and as a transient problem. Jan 20, 2012 · Which solver for time dependent : Electromagnetic Waves + Solid Mechanics Posted 2012年1月20日 GMT-5 05:44 6 Replies This COMSOL Multiphysics application is a time-dependent 3D problem. It is possible to prescribe a velocity in one direction, leaving the solid free in the other directions. The first study step solves a global equation that passes the values of the periodically extended signal to a dependent variable named P; the second study computes the FFT of P. i. Wave propagate through compaund and reflect from steel plate. These scale factors are automatically determined by default, but sometimes need to be manually tuned. May 31, 2016 · A cylinder is rotating (its axis is penetrating through the centre of the upper surface and the bottom surface) This physics is applied to the side surface and its thickness is b [m], where b is time-dependent and b is calculated by Global Equation: F-forcetot = 0 ( Initial Values: u (0) = b0 (constant), ut (0)=b0/time where time is 0. To be more precise, if I can get or not a decrease of the reciprocal of the step size faster and much linear than with lower tolerances (I have seen that a linear decrease of The Linear Elastic Material node adds the equations for a linear elastic solid and an interface for defining the elastic material properties. The settings available for the two study steps are the same as for a Time Dependent study step. Patents pending. The beam was fixed from one end, and an edge load was May 8, 2015 · Hi for me the main issue is that you have selected Geometry "assembly" mode, this means that all your domains are independent. Also see The Relationship Between Study Steps and Solver Configurations. Jan 31, 2017 · Dear all: I am studying a soft & thick cylindrical shell under inner and outer time-dependent pressure loadings. I want to use the solution of the stationary study as an initial condition for my time dependent study. Stationary (time-invariant) models with nonlinearities may converge very slowly. COMSOL Multiphysics® version 6. Structural mechanics is a field of applied mechanics in which you compute the deformations, stresses, and strains that occur in solid materials due to forces and loads. Apr 20, 2024 · Hello! I am currently using the Solid Mechanics module to simulate deformation of a shell over time. All functionality for including other domain types, such as a fluid domain, is also available. Oct 24, 2018 · Solid mechanics simulation in COMSOL Multiphysics William Grover 926 subscribers Subscribed In this COMSOl tutorial, we explain how to simulate time-varying loads in COMSOL Multiphysics. when I solve the model time dependent, the principal stresses=0 in the 3D model (solid. Here, we discuss various foundational questions that are important to address when performing a time-dependent study and how the answers feed into what class of dynamics your structural model falls under. Common examples of such equations include the heat transfer equation and the chemical species transport equations, but any parabolic partial differential equation will behave similarly: the transient behavior of the solution is characterized by an In the Fluid-Solid interface ( ), a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. For time-dependent studies, the load L1 is assumed to be of the form l (t) ΦHL0, where L0 is constant, and l (t) is the given load factor. For example, in electromagnetics, it is used to compute transient electromagnetic fields, including electromagnetic wave propagation in the time domain. 182 Contact Pairs . Figure 3: Displacement vs. Oct 29, 2020 · A two dimensional FEM model is designed in COMSOL and has been simulated for ultrasonic wave propagation in an isotropic solid media to optimize the FEM parameters for getting closer solution. The Solid Mechanics model is 2D (annulus), with a cylindrical pore in the cross-section. The Deformed Geometry functionality in COMSOL Multiphysics allows one to make the material frame differ from the geometry frame, which implies that the geometry of the structure on the material frame can differ from that originally drawn. Introduction to the Structural Mechanics Module 1998–2012 COMSOL Protected by U. Error Last time step is not converged in COMSOL #important #error #convergence #issue #lasttimestep Pioneer of Success 8. An example of this is that when you add the Thermal Stress, Solid multiphysics interface, the Solid Mechanics interface will assume that a time-dependent analysis is quasistatic from the structural point of view, so that inertial terms are ignored. 191 Settings for Contact Nodes . These equations may be a set of independent ordinary differential equations (ODEs) or a set of coupled equations which arise as a consequence of the spatial discretization of a boundary value Jul 2, 2014 · Heat Transfer in Solids+Solid Mechanics boundary conditions Posted Jul 2, 2014, 3:57 a. It illustrates how fluid flow can deform structures and how to solve for the flow in a continuously deforming geometry using the arbitrary Lagrangian-Eulerian (ALE) technique. In the Fluid–Solid Interaction ( ) interface, a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. EST Version 6. Apr 19, 2016 · How to add a prescribed displacement in Comsol Multiphysics, structural mechanics , plate ,2D, time dependent study ? Hello everyone; For a Solid Mechanics or Layered Shell interface, a Contact node will override all previous nodes in the Model Builder tree sharing the same boundary selections. Material data such as Young’s modulus, yield stress and strain hardening have strong temperature dependencies. 3. In Time Dependent study, the software will use the dispersion model, for which the effective relaxation time and relative permittivity increment are computed automatically based on the node input parameters. 202 Monitoring the Solution . It is available with Linear Elastic Material in the Solid Mechanics and Layered Shell interfaces, and with Linear Elastic Material, Layered in the Shell interface. i just dont In the Fluid–Solid Interaction ( ) interface, a Solid Mechanics interface and a Single Phase Flow interface model the solid and the fluid, respectively. Parametric sweep in COMSOL® was used to perform the frequency dependent simulations at various frequencies of the applied displacement at the top boundary. A nonlinearity can be introduced into a model either in the governing equation or by making any of the material properties, loads, or boundary conditions dependent on the solution. EST 6 Replies The Eigenfrequency, Prestressed; Frequency Domain, Prestressed, Modal; and Time Dependent, Prestressed, Modal studies are also available for the Shell, Plate, Membrane, and Truss interfaces using the Structural Mechanics Module. Feb 6, 2011 · These two tolerances are used by the time-stepping algorithms employed in the COMSOL Multiphysics time dependent simulation. In 2D, plane stress, plane strain, or generalized plane strain assumptions can be used. The physical and numerical properties of these equations differ significantly. The Solid Mechanics module in 2D domain is employed. 188 Meshing for Contact Analysis . 199 Interference Fit . You can add several Viscoelasticity subnodes and set them to use Standard linear solid model and Use fractional derivatives option and compute the approximation for each node. Simulations using the interface are always time-dependent since the position of the interface between the two fluids Replace the function name alpha_solid_1 (T [1/K]) [1/K], with the function name that you have assigned to the temperature-dependent measured thermal expansion coefficient and use the correct temperature units. The Solid Mechanics (solid) interface (), found under the Structural Mechanics branch () when adding a physics interface, is intended for general structural analysis of 3D, 2D, 1D, or axisymmetric bodies. Multiphysics problems are often nonlinear. Watch the archived webinar. The Heat Transfer in Solids (ht) interface () is used to model heat transfer in solids by conduction, convection, and radiation. In 2D, 1D, and 1D axisymmetry, plane stress, plane strain, or generalized plane strain assumptions can be used. The multiphysics phenomena were investigated with COMSOL® 6. See examples and a tutorial video here. Modeling Pressure Acoustics In this 9-part, self-paced course, learn how to model pressure acoustics in COMSOL Multiphysics ®. Over time, these verifiable and validated formulations have been developed and are available for a wide range of materials. For now, I use the parameteric sweep of time-dependent solver and specify a shared pretty long time period Ttotal to each of the time-dependent study. I want to simulate propagation and reflection ultrasound wave induced by piezodisk. 199 Multiphysics Contact . For conventional modeling and simulation tasks, there is no need to use a mathematics interface Using a stationary or a time-dependent study, the Fluid-Solid Interaction interface models two-way coupling between solids and fluids. Selecting a Time Dependent, Modal study step gives a Time Dependent, Modal study step with a Modal Solver. S. A stationary study does not depend on time. 74K subscribers Subscribe For example, in electromagnetics, it is used to compute transient electromagnetic fields, including electromagnetic wave propagation in the time domain. To check such a model, I would have started by applying a body load => gravity and use a time dependent solver just to check that the body remains "up" as expected, you will be surprised by the result if you try this in assembly mode :) Then you two "contact pairs" are Use the Viscoelasticity subnode to add viscous stress contributions to an elastic material model. The Eigenfrequency, Prestressed; Frequency Domain, Prestressed, Modal; and Time Dependent, Prestressed, Modal studies are also available for the Shell, Plate, Membrane, and Truss interfaces using the Structural Mechanics Module. You need to use a moving mesh in order to capture the back EMF contributions. Introduction The following example demonstrates techniques for modeling fluid-structure interactions in COMSOL Multiphysics. In this article, we discuss the importance of scaling for a model and how to manually set the scaling of dependent variables. Which type of condition to use depends on what is known about the conditions at the boundary: if the flux is known, the model computes the dependent variables for you; if the 6 days ago · The COMSOL discussion forum covers a wide variety of simulation topics. The study consists of two study steps: a Time Dependent, Fluid study step, solving for the fluid velocity and pressure fields, followed by a Time Dependent, Solid study step, solving for the solid deformation field. Nov 22, 2021 · Hello. 2 0 Replies Discussion: Time-Dependent Analysis Time-dependent analysis includes inertial forces, viscous forces, and time-varying loads. The Linear Elastic Material node adds the equations for a linear elastic solid and an interface for defining the elastic material properties. m. . applied force. RFy in the Expression field and replace the default). The following types of damping are available: • Rayleigh Damping • Isotropic Loss Factor • Anisotropic Loss Factor • Viscous Damping • Loss Factor The two types are closely related because in a well-posed model, every flux condition results in some unique values of the dependent variables, and every constraint requires a unique flux to enforce the expected values. The prescribed velocity condition is applicable for Time Dependent and Frequency Domain studies. Through step-by-step demonstrations in the software, comprehensive discussions, and thorough explanations, you will gain a solid foundation in the fundamentals of building such models. When a physics interface is selected, a number of different studies (analysis types) are suggested by COMSOL Multiphysics ®. Patents 7,519,518; 7,596,474; and 7,623,991. We used the time-dependent study with fully-coupled iterative geometric multigrid solver in COMSOL® to solve the time-dependent initial boundary value problem. The settings are the same as for the Time Dependent study step for the sections that they share (the Time Dependent study step includes some additional settings). The Solid Mechanics (solid) interface (), found under the Structural Mechanics branch () when adding a physics interface, is intended for general structural analysis of 3D, 2D, or axisymmetric bodies. See what's new. The Dependent Variables node's Settings window. Structural mechanics was the first engineering field to use the concept of finite elements as a standard tool. There is also some another module which is steady and solved together with solid mechanics by time-dependent solver. RFy) from the list (or enter solid. Time in the COMSOL Multiphysics Programming Reference Manual. There are several interfaces in COMSOL Multiphysics ® that are frequently used for electrovibroacoustics modeling, including the Magnetic Fields, Pressure Acoustics, Solid Mechanics, and Thermoviscous Acoustics interfaces. There are, however, special study steps available in order to model one-way coupled fluid-structure interaction. You can add the Damping subnode to the Linear Elastic Material, the Nonlinear Elastic Material, and the Hyperelastic Material. I defined all constraint correctly and If I use stationary study in submodel then I successfully get correct answers for the submodel but if I use time dependent study then it showing errors- Feature: Time-Dependent Solver 1 (sol4/t1) Failed to find consistent initial values. EDT Heat Transfer & Phase Change, Studies & Solvers, Structural Mechanics Version 4. 192 Time-Dependent Contact Analysis . Browse the threads and share your ideas with the COMSOL community. If you are solving a time-dependent (transient) model, make sure that all prescribed displacements, loads, and stiffnesses of any spring foundations are time dependent and ramped over a physically reasonable time span, not just for the solid mechanics physics, but for all other physics that are included if it is a multiphysics model. Analyze objects made of nonlinear structural materials with the Nonlinear Structural Materials Module, an add-on to the Structural Mechanics Module or the MEMS Module. The flow can be either laminar or turbulent (turbulent flow requires the CFD Module). View the specification chart to find your ideal combination. Piezodisk is located in epoxy compaund. 181 Setting Up a Contact Problem . COMSOL Multiphysics® version 5. These industries extensively use Multiphysics simulation to predict product performance, optimize design, and prevent failure during service. To be more precise, if I can get or not a decrease of the reciprocal of the step size faster and much linear than with lower tolerances (I have seen that a linear decrease of The Modal Solver (using a Time Dependent, Modal study step) and the Time Dependent, Modal Reduced-Order Model, can export the reduced matrices and vectors for use in further simulations. In my time-dependent study, I constantly experience the following problem: Failed to Apr 17, 2024 · The problem is that the period from the initial condition to the steady state is unknown before modeling. Phase field damage is also available for Hyperelastic Material in the Solid Mechanics interface. tnyfgysuysipzmhiqzotnmbhxavbqnctgtbbchrojoexcqyiudsmqpjxwtqlvnwrtkglzrxsvju