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

作者：Li, Hao; Ding, Xie-Fei; Yin, Zheng-Nan; Xiao, Heng^*

来源：Applied Sciences-Basel, 2017, 7(3): 289.

DOI：10.3390/app7030289

• shape memory polymers
• thermo-coupled effects
• finite deformations
• stress softening
• elastoplasticity models
• explicit simulation

A new elastoplastic
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J 2
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-flow models with thermal effects 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 well with test data in literature.

• 出版日期2017-3
• 单位上海大学