Comments

• Sergio Couldn't I do the same by assuming a linear elastic material with a near zero poisson's ratio?

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 28
• Sergio Your hyperelastic vs hyperfoamrison is perfect. You indicate that Mecway can accommodate a hyperfoam material model. I'm not seeing where this kind of data can be entered.

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 28
• John The problem, at least as I see it, is that the Mooney-Rivlin model is that it is for a solid elastomer which is mostly incompressible (volume conservative). The Poisson's ratio for a neat polyurethane elastomer is 0.499. Your ratio in the file …

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 27
• Thanks for the comments, all. I have been thinking about this foam problem. These jounce bumpers are microcellular closed cell polyurethane foam materials. In compression the CO2 "bubbles" compress to a point that the material almost transforms to a…

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 26
• Thanks. I'll play around with your suggestions. The radial displacement was imposed because there is a pin that runs through the center when it's in use. But that would only restrict negative radial displacement. These are tested on a machine that d…

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 7
• I'm used to analyzing solid hot cast polyurethane parts. I just took a guess at the properties. Solid polyurethane elastomers have a Poisson's Ratio of 0.499. I've worked with both linear properties and Mooney properties with solid elastomers. For t…

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 6
• Not used to sending files. Did this work??

  in Large deflection solve difference using 3D static and 3D nonlinear static solver. Comment by rpalinka March 6