Ordinary state-based peridynamics for thermoviscoelastic deformation

被引:68
|
作者
Madenci, E. [1 ]
Oterkus, S. [2 ]
机构
[1] Univ Arizona, Dept Aerosp & Mech Engn, Tucson, AZ 85721 USA
[2] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, Glasgow, Lanark, Scotland
关键词
Peridynamics; Viscoelasticity; Isotropic; Prony series; Failure; ELASTICITY THEORY; CONVERGENCE; MODELS;
D O I
10.1016/j.engfracmech.2017.02.011
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
This study presents the ordinary state-based peridynamic (PD) constitutive relations for viscoelastic deformation under mechanical and thermal loads. The behavior of the viscous material is modeled in terms of Prony series. The constitutive constants are the same as those of the classical history-integral model, and they are also readily available from relaxation tests. The state variables are conjugate to the PD elastic stretch measures; hence, they are consistent with the kinematic assumptions of the elastic deformation. The PD viscoelastic deformation analysis successfully captures the relaxation behavior of the material. The numerical results concern first the verification problems, and subsequently, a double-lap joint with a viscoelastic adhesive where failure nucleates and grows. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:31 / 45
页数:15
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