jeffly
2009-11-03, 13:47
Hello All:
I was simulating a rather simple case with hyperelastic material model with stress_strain data from three mode tests, simple, planar, and biaxial tension tests. The input load was a time history displacement mimicking a ramped displacement and then a hold. However, the response stress history did not show any sight of relaxation at all. I then tried to simplify matter further by using linear elastic isotropic material model with E, mu, and stress_strain data from a simple tension test. I still did not see any stress relaxation in the polymer at all. By the way, I was using ANSYS WB 11.0. Thanks in advance so much for your helps and advices.
Jeff.
I was simulating a rather simple case with hyperelastic material model with stress_strain data from three mode tests, simple, planar, and biaxial tension tests. The input load was a time history displacement mimicking a ramped displacement and then a hold. However, the response stress history did not show any sight of relaxation at all. I then tried to simplify matter further by using linear elastic isotropic material model with E, mu, and stress_strain data from a simple tension test. I still did not see any stress relaxation in the polymer at all. By the way, I was using ANSYS WB 11.0. Thanks in advance so much for your helps and advices.
Jeff.