We are using an Ogden hyperelastic material property to model an elastomer. The elastomer is a cylindrical bushing. Our simulation is static (a sine input in semi-static condition) so we are trying to use either Static (nonlinear) or Implicit to solve it. However, every time we run it using Implicit or Static we the analysis exit with an error saying it has “Time increment required is less than minimum specified”. We have decreased the minimum increment but we still get this error. However, when we run it in Explicit mode it works fine but it takes a long time. Is there a way we can run this model using Implicit or Static (Nonlinear on)?
This error is not only retated to decrease time increment but I means a lot of another problems during set up your model. Check the following
1- load and boundary conditions because when your model not being restricted this error occurs
2- change your material to a simple elastic one if the error will not repeat replace to real one
3- in implicit solver use quasi static
4- replace static or implicit with explicit solver because convergence become more easier
And then let me know about your model again
This document may help you to solve the problem:
Preprint How to get meaningful and correct results from your finite e...
This means the result is not converging. In some cases, element Volume is close to zero and hence results abnormal value in the stiffness matrix.
It usually means that you should define a small minimum time increment and use more attempts to converge an increment.
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