Analytical and Experimental Evaluation of Nonlinear Viscoelastic-Viscoplastic Composite Laminates under Creep, Creep-Recovery, Relaxation and Ramp Loading

被引：54

作者：

Rui Miranda Guedes

António Torres Marques

Albert Cardon

机构：

[1] Universidade do Porto,Departamento de Engenharia Mecânica e Gestão Industrial da Faculdade de Engenharia

[2] Rua dos Bragas,Department of Mechanics of Materials and Construction (MEMC)

[3] Vrije Universiteit Brussel (V.U.B.),undefined

来源：

Mechanics of Time-Dependent Materials | 1998年 / 2卷 / 2期

关键词：

cyclic mechanical loading; durability; ramp loading; relaxation; stress-strain rate dependent; viscoelasticity; viscoplastic;

D O I：

10.1023/A:1009862009738

中图分类号：

学科分类号：

摘要：

A numerical procedure to predict long-term laminate properties of fibre reinforced composite materials was developed. In the procedure, we extended the classical laminate theory to include time related response of composite materials for membrane and flexural loading. The material response, dependent on the stress history, was modelled using the Schapery single integral equation. The integrals were handled by an approximate method that uses the Prony's series and only requires the storing of the current stress and some internal strain components. An efficient semi-direct time-integration scheme, providing a stable integration process, was derived to be included in the numerical procedure. Comparisons of theoretical results were made with experiments conducted on composite materials under creep-creep recovery, relaxation and ramp loading.

引用

页码：113 / 128

页数：15

共 19 条

[1]

Czyz J.A.(1990)An effective method for non-linear viscoelastic structural analysis Computers & Structures 37 637-646

[2]

Szyszkowski W.(1992)Experimental characterization of nonlinear rate-dependent behavior in advanced polymer matrix composites Experimental Mechanics 32 68-73

[3]

Gates T.S.(1989)A stable numerical solution method for in-plane loading of nonlinear viscoelastic laminated orthotropic materials Composite Structure 13 251-274

[4]

Gramoll K.C.(1984)Nonlinear viscoelastic stress analysis - A finite element approach Computers and Structures 18 133-139

[5]

Dillar D.A.(1969)On the characterization of nonlinear viscoelastic materials Polymer Engineering and Science 9 295-310

[6]

Brinson H.F.(1993)Creep/recovery behavior of toughened and untoughened graphite/epoxy systems Polymer Engineering and Science 33 1390-1399

[7]

Henriksen M.(1986)Prediction of the long-term creep-compliance of general composite laminates Experimental Mechanics 26 89-102

[8]

Schapery R.A.(1993)Time-temperature behavior of IM7/5260 composites subjected to cyclic loads and temperatures Mechanics of Composite Materials: Nonlinear Effects 159 343-357

[9]

Tsotsis T.K.(1995)The nonlinear viscoelastic-viscoplastic behavior of IM7/5260 composites subjected to cyclic loading Journal of Composite Materials 29 2025-2046

[10]

Tuttle M.E.(1984)Creep and recovery behavior of ultra-high molecular weight polyethylene in the region of small uniaxial deformations Polymer 25 57-62

← 1 2 →