Cohesive zone modelling of fracture in polybutene

被引：11

作者：

Andena, L.

Rink, A.

Williams, J. G.

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20133 Milan, Italy

[2] Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2AZ, England

来源：

ENGINEERING FRACTURE MECHANICS | 2006年 / 73卷 / 16期

关键词：

polybutene; fracture; cohesive zone; identification; FEM;

D O I：

10.1016/j.engfracmech.2006.04.026

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Fracture properties of isotactic polybutene-1 have been investigated. Fracture tests have been conducted and relevant properties at initiation have been determined according to linear elastic fracture mechanics. Two distinct fracture mechanisms have been identified, one of them causing partial instability during crack propagation. Numerical modelling has been performed using a cohesive zone approach. In particular, the identification of suitable cohesive laws has been tried using parametric identification and two different experimental methods. Results suggest that two different cohesive laws may be needed in order to describe crack initiation and crack propagation. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2476 / 2485

页数：10

共 14 条

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ANDENA L, 2005, P ICF 11 TUR

[2]

ANDENA L, 2005, P 4 ESIS TC4 C DIABL

[3] Polymorphism of isotactic poly(1-butene) as revealed by microindentation hardness. 1. Kinetics of the transformation [J].