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Nahid3007

Divergence in Implicit Simulation Hyperelastic Material

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Hello Community,

 

how can I prevent my implicit simulation to diverge (see attached figures of the engine OUT file)?

 

There is a sentence in the RADIOSS v13 User Guide: "For the hyper-elastic type laws (42, 62, 69, and 82), special treatments have been done to avoid the divergence." 

 

I have a problem similar to “Example 42: Rubber Ring” with my own model (also hyper-elastic material - MAT42).

 

The settings in the engine file for my model are almost the same to Ex.: 42.

 

FIGURE_1_Sim1.PNG

FIGURE_2_Sim1.PNG

FIGURE_3_Sim2_reduced_DT.PNG

FIGURE_4_Sim2_reduced_DT.PNG

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