A thermo-mechanically coupled nonlinear viscoelastic-viscoplastic cyclic constitutive model for polymeric materials

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• 作者：Chao Yu^a ; ^b ; Guozheng Kang^a ; ^b ; ^{guozhengkang@home.swjtu.edu.cn} ; ^{guozhengkang@126.com} ; Kaijuan Chen^b ; Fucong Lu^b
• 关键词：Polymeric materials ; Thermo-mechanically coupled deformation ; Viscoelasticity ; Viscoplasticity ; Constitutive model
• 刊名：Mechanics of Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：105
• 期：Complete
• 页码：1-15
• 全文大小：3024 K
• 卷排序：105

文摘

A thermomechanically coupled constitutive model is constructed. Viscoelasticity and viscoplasticity are both considered in the proposed model. A modified kinematic hardening rule is employed in the viscoplastic part. Rate-dependent uniaxial ratchetting of the UHMWPE are reasonably predicted. The cyclic softening and temperature variations at high loading rate are predicted.