dermicha29
Mechanical
dear all,
i´m using the neo-hookean model (hyperelastic) with hybrid elements and a coefficient D1=0 for simulating a fully incompressible elastomer specimen under large deformations. i would like to consider the hysteresis effekt as well but there are allways the following errors:
"Hysteresis material calculations did not converge for 144 elements at one or more integration points. The elements have been identified in element set warnelemhysteresisstep1inc1.
No convergence in computing elastic jacobians or stretches at 1152 points. Also, material instability may have been detected. Only the first 100 have been reported above"
can anybody help me on this subject?
thanks in advance
michael freund
university of hannover
Germany
i´m using the neo-hookean model (hyperelastic) with hybrid elements and a coefficient D1=0 for simulating a fully incompressible elastomer specimen under large deformations. i would like to consider the hysteresis effekt as well but there are allways the following errors:
"Hysteresis material calculations did not converge for 144 elements at one or more integration points. The elements have been identified in element set warnelemhysteresisstep1inc1.
No convergence in computing elastic jacobians or stretches at 1152 points. Also, material instability may have been detected. Only the first 100 have been reported above"
can anybody help me on this subject?
thanks in advance
michael freund
university of hannover
Germany