Application Gallery

La Bibliothèque de Modèles présente des modèles construits avec COMSOL Multiphysics pour la simulation d'une très grande variété d'applications, dans les domaines électrique, mécanique, fluidique et chimique. Vous pouvez télécharger ces modèles résolus avec leur documentation détaillée, notamment les instructions de construction pas à pas, et vous en servir comme point de départ de votre travail de simulation. Utilisez l'outil de recherche rapide pour trouver les modèles correspondant à votre domaine d'intérêt, et connectez vous avec votre compte COMSOL Access, associé à une licence COMSOL, afin de télécharger les fichiers modèles.

Postbuckling Analysis of a Hinged Cylindrical Shell

The model studied is a benchmark for a hinged cylindrical panel subjected to a point load at its center. A linear buckling analysis predicts the critical buckling load. Such an analysis will however not give any information about what happens at loads higher than the critical load. Tracing the solution after the critical load is called a postbuckling analysis. This model uses the Shell interface.

Simulation of a Microrobot, 3D

A microrobot's leg, which structurally moves due to the rapid application of heat, is modeled in this example. Heat is generated by an electric current and propagates by conduction through the leg and, due to thermal expansion and different thermal expansion coefficients of the leg's materials, a bending action is induced. Thin layers of Al and SiO have also been modeled using a structural ...

Stress Analysis of an Elliptic Membrane

This is a benchmark model for a plane stress problem. The accuracy of the computed stress concentration is evaluated, and a mesh convergence study is performed for different element types.

Critical Frequencies for a Rotor

The rotor in an electric motor is analyzed. In the design of a motor it is important that no eigenfrequencies for the rotor lie within the operating interval of the revolution speed (in revolutions / second) for the motor. If the eigenfrequencies of the rotor lie in this interval then this shortens the engines lifetime, and can sometimes even lead to dysfunction and breakdown. This 3d model of ...

Thick Wall Cylinder Benchmark Problem

A thick wall cylinder is exposed to both internal and external pressure and thermal load. The model is both plane and axisymmetric. The results are compared to the analytic solution.

Connecting Shells and Beams

Many engineering structures consist of thin and slender components, where a full solid model will result in extremely many small elements. For such structures, it is much more efficient to use shell or beam elements. In this tutorial and verification model, it is shown how to connect beam and shell elements in different situations. The results are also compared to a solid model of the same ...

In-Plane Framework with Discrete Mass and Mass Moment of Inertia

In this model, you build and solve a 2D beam model using the 2D Structural Mechanics Beam interface. This model describes the eigenfrequency analysis of a simple geometry. A point mass and point mass moment of inertia are used in the model. The two first eigenfrequencies are compared with the values given by an analytical expression.

In-Plane and Space Truss

Trusses are elements which can only sustain axial forces. You can use trusses to model truss works where the edges are straight as well structures like sagging cables. In the following example you first build and solve a simple 2D truss model using the 2D Truss interface. Later on, you analyze a 3D variant of the same problem using the 3D Truss interface. This model calculates the deformation ...

Thermally Loaded Beam

In this example you will build and solve a 3D beam model using the 3D Beam interface. This model shows how a thermally induced deformation of a beam is modeled. Temperature differences are applied across the top and bottom surfaces as well as the left and right surfaces of the beam. The calculated solution is compared to the analytical solution.

Connecting Shells and Solids

This tutorial model shows how to model a structure using both shells and solids, and how to create the transition between the two modeling domains. Results are compared between the shell solution and the full 3D solution, and the effects of the transition are highlighted.

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