An Explicit Approach Toward Modeling Thermo-Coupled Deformation Behaviors of SMPs

An Explicit Approach Toward Modeling Thermo-Coupled Deformation Behaviors of SMPs

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A new elastoplastic J 2 -flow models with thermal effects Ski de fond - Junior - Fixations is proposed toward simulating thermo-coupled finite deformation behaviors of shape memory polymers.In this new model, an elastic potential evolving with development of plastic flow is incorporated to characterize the stress-softening effect at unloading and, moreover, thermo-induced plastic flow is introduced to represent the strain recovery effect at heating.It is shown that any given test data for both effects may be accurately simulated by means of direct and explicit procedures.

Numerical examples for model predictions compare Wave Washer well with test data in literature.