Nonequilibrium statistical thermodynamic theory for viscoelasticity of   polymers

doi:10.1016/S0022-5096(97)00010-0

CORC > 北京大学 > 工学院

	Nonequilibrium statistical thermodynamic theory for viscoelasticity of polymers
	Chen, XH ; Tong, P ; Wang, R
刊名	固体力学与固体物理学杂志
	1998
关键词	thermomechanical processes constitutive behavior viscoelastic material DEFORMATION
DOI	10.1016/S0022-5096(97)00010-0
英文摘要	In this paper, we propose a new molecular relaxation mechanism for polymers by considering the change in the actual microscopic structure under macroscopic stress fields. The effects of both intramolecular and intermolecular forces on the inner rotation and the relative slippage of links are taken into account. A constraint potential function, along with a constraint tensor, is introduced to describe the constraint exerted by the surrounding medium. A unified three-dimensional constitutive framework for the viscoelasticity of polymers including thermal effects is established by making use of nonequilibrium statistical thermodynamics, which can be reduced to James and Guth's (1943) non-Gaussian polymer network theory for rubber elasticity. The model compares well with the experimental data for PMMA and plasticized PVC over a wide range of temperatures. (C) 1997 Elsevier Science Ltd. All rights reserved.; Materials Science, Multidisciplinary; Mechanics; Physics, Condensed Matter; SCI(E); 8; ARTICLE; 1; 139-152; 46
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/217901]
专题	工学院
推荐引用方式 GB/T 7714	Chen, XH,Tong, P,Wang, R. Nonequilibrium statistical thermodynamic theory for viscoelasticity of polymers[J]. 固体力学与固体物理学杂志,1998.
APA	Chen, XH,Tong, P,&Wang, R.(1998).Nonequilibrium statistical thermodynamic theory for viscoelasticity of polymers.固体力学与固体物理学杂志.
MLA	Chen, XH,et al."Nonequilibrium statistical thermodynamic theory for viscoelasticity of polymers".固体力学与固体物理学杂志 (1998).