Convergence issues are common when modelling non linear problems. In previous webinars, we presented the specific convergence issues related to contact and constraints such instability problems and overconstraints. In this webinar, we will extend the list of the possible causes that can lead to the divergence of the analysis. We will see how to identify the modelling errors and recognise when a problem is too difficult or ill-posed to be solved effectively. We will look at the causes that make Abaqus fail to converge and try to understand the most frequent warning and error messages. Finally, basic problems related to element behaviour and materials will be presented and strategies to develop models that will converge will be described.
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