Tech Briefs

Direct Femap Interface to ADINA with TMC Analysis

The direct Femap interface to ADINA gives our users flexible access to a third party pre- and post-processing package that is commonly used in industry. An important feature is the use of ADINA TMC available for thermal-mechanical coupling analysis with ADINA. In this Brief, we demonstrate the TMC analysis of a rubber boot using Femap for pre- and post-processing.

Rubber boots are widely used in many industries to protect the flexible connections between two jointed assemblies, for example, the constant-velocity joints on drive shafts in the motor car industry. The finite element analysis of a rubber boot involves large displacements/large strains, incompressible behavior of rubber materials, 3D contact between the shaft and boot as well as self-contact of the boot surfaces. In addition, due to energy dissipation, see Figure 1, the rubber material undergoes temperature changes in the loading-reloading cycles.

Figure 1  Dissipation effect in a loading-reloading cycle

The geometrical model of a rubber boot and shaft is built in Femap as shown in Figure 2. In the finite element model, we use ADINA 3D-shell elements with the Mooney-Rivlin material model for the boot and 3D solid elements with the elastic material model for the shaft (see Figure 3).

Figure 2  Geometry model of rubber boot and shaft

Figure 3  Finite element model of rubber boot and shaft

Figure 4 shows the deformation of the rubber boot with a band plot of the von Mises stress. The temperature distribution is shown in Figure 5, and also in the movie above.

Figure 4  Band plot of von Mises stress in rubber boot

Figure 5  Band plot of temperature distribution in rubber boot

The entire analysis, from pre-processing to post-processing, is performed within the Femap environment using the direct Femap interface to ADINA.

For tutorials on the use of the ADINA Femap interface, see 1 and 2.

As is well recognized, reliable and efficient pre- and post-processing is very important in finite element analysis. The importance of the Femap to ADINA interface is that users of Femap, who are already familiar with Femap, can directly use the powerful analysis features of ADINA with very little additional effort.

Femap, pre-processor, post-processor, rubber boot, 3D shell, Mooney-Rivlin material, thermo-mechanical coupling, contact, CAD, CAE