The vibration modes of a thin or thick circular disc are well known, and it is possible to compute the corresponding eigenfrequencies to arbitrary precision from a series solution. The same is true for the acoustic modes of an air-filled...
Transient analysis of the wave propagation in rock mass caused by a short duration load on the surface. Such loads are typical during tunnel constructions and other excavations using blasting. The model shows the use of the...
The combustion process at steady-state produces cyclic pressure loads and high constant temperatures. These load conditions yield a piston failure due to fatigue cracking, so-called high cycle fatigue cracks. In this model, a diesel...
This is a benchmark model involving stick-slip friction of a ring rolling inside another ring. The displacement of the inner ring is computed and compared to the analytical result. This model also shows how to tackle friction dominated...
This tutorial model demonstrates the use of dynamic cyclic symmetry with postprocessing on the full geometry. A 3D impeller with eight identical blades can be divided into eight sectors of symmetry. The model computes the fundamental...
When a structure is subjected to high frequency vibrations, a significant amount of heat can be generated due to mechanical (viscoelastic) losses in the material. A second mechanism contributing to the slow temperature rise in a vibrating...
A long elastic cylinder resting on a flat rigid foundation is analyzed. The cylinder is subjected to a uniform load along its top. The contact pressure distribution is compared with the analytical solution
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...
In this model, you build and solve a simple 3D beam model using the 3D Beam interface. This model calculates the deformation, section forces, and stresses in a cantilever beam, and compares the results with analytical solutions. The first...
This model calculates the eigenfrequencies and mode shapes of an unconstrained cylinder in axisymmetry. The model is taken from NAFEMS Free Vibration Benchmarks. The eigenfrequencies are compared with the values given in the...
