Abstract
This paper discusses a state- and rate-dependent frictional model and its implementation in large deformation finite elements. The model features a state variable to describe fading memory of slip history and a Perzyna viscoplastic regularization to quantify the frictional response to rapid slip changes. Some results in nonlinear dynamics for a simple spring mass frictional slider are very briefly presented as background for some frictional induced instabilities in finite elements that are discussed next. Comparison with available experimental data is performed and an overall good agreement is observed where a simple Coulomb law failed to predict reasonable results.
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