I have been trying to run a simulation on a relatively simple geometry all day. The simulation uses the Neoprene Rubber material (hyperelastic) and is intended to model the 'flipping' of a dome inside out. The model is a surface model, with 0.5 mm thickness. The only boundary condition aside from pressure (~9 Pa applied) is a fixed support.
I have attempted the following things, but cannot acheive convergance due to 'excessive distortion of elements'
- Decreasing mesh size - 0.8 mm yields optimal results, higher or lower causes the simulation to terminate earlier.
- weak spings/Energy stabilisation - no change
- substeps: improved result up to a point. I tried increasing initial and minimum substeps. No results past 500 initial substeps
- Low order triangular mesh - doesn't help, similar result
Please the .wbpz archive here: https://polybox.ethz.ch/index.php/s/MY4VkCvr5vJ819N
I would really appreciate help, and for someone to point out where I am going wrong. Thank you!