General Mechanical

General Mechanical

hyperelastic material instability

    • m.caragiuli


      During the fitting of uniaxial experimental data using a hyperelastic material model (Ogden) I managed to get an optimal fitting of the curve. However, during the solution in the Solver Output a message appears reporting the instability of the material as follows:

      material instability

      and I can see that convergence is challenging and it is very time-consuming.  I don't understand the reason for the material instability. Do you have any ideas? How can I solve this issue?

      I would be grateful to receive your feedback.

      Many thanks.


Viewing 0 reply threads
  • You must be logged in to reply to this topic.