The viscoelastic and viscoplastic behavior of low-density polyethylene

	The viscoelastic and viscoplastic behavior of low-density polyethylene
	Drozdov AD ; Yuan Q
刊名	international journal of solids and structures
	2003
卷号	40 期号:10 页码:2321-2342
关键词	MOLECULAR-WEIGHT POLYETHYLENE STRAIN-RATE DEPENDENCE GLASS-TRANSITION CONSTITUTIVE MODEL STRESS-RELAXATION CREEP-BEHAVIOR SEMICRYSTALLINE POLYMERS ISOTACTIC POLYPROPYLENE ELEVATED-TEMPERATURES MECHANICAL-PROPERTIES
ISSN号	0020-7683
通讯作者	drozdov ad
中文摘要	three series of tensile tests with constant cross-head speeds (ranging from 5 to 200 mm/min), tensile relaxation tests (at strains from 0.03 to 0.09) and tensile creep tests (at stresses from 2.0 to 6.0 mpa) are performed on low-density polyethylene at room temperature. constitutive equations are derived for the time-dependent response of semicrystalline polymers at isothermal deformation with small strains. a polymer is treated as an equivalent heterogeneous network of chains bridged by temporary junctions (entanglements, physical cross-links and lamellar blocks). the network is thought of as an ensemble of meso-regions linked with each other. the viscoelastic behavior of a polymer is modelled as thermally-induced rearrangement of strands (separation of active strands from temporary junctions and merging of dangling strands with the network). the viscoplastic response reflects mutual displacement of meso-domains driven by macro-strains. stress-strain relations for uniaxial deformation are developed by using the laws of thermodynamics. the governing equations involve five material constants that are found by fitting the observations. fair agreement is demonstrated between the experimental data and the results of numerical simulation.
收录类别	SCI
语种	英语
WOS记录号	WOS:000182289800001
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/15335]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Drozdov AD,Yuan Q. The viscoelastic and viscoplastic behavior of low-density polyethylene[J]. international journal of solids and structures,2003,40(10):2321-2342.
APA	Drozdov AD,&Yuan Q.(2003).The viscoelastic and viscoplastic behavior of low-density polyethylene.international journal of solids and structures,40(10),2321-2342.
MLA	Drozdov AD,et al."The viscoelastic and viscoplastic behavior of low-density polyethylene".international journal of solids and structures 40.10(2003):2321-2342.