Cracking in PMMA containing U-shaped notches

被引：139

作者：

Gómez, FJ ^{[1
]}

Elices, M ^{[1
]}

Valiente, A ^{[1
]}

机构：

[1] Univ Politecn Madrid, Dept Ciencia Mat, ETS Ingn Caminos, E-28040 Madrid, Spain

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2000年 / 23卷 / 09期

关键词：

U-notches; cohesive crack; size effects; fracture mechanics; PMMA; cracking criterion;

D O I：

10.1046/j.1460-2695.2000.00264.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A procedure is proposed to evaluate the mechanical response (i.e. peak loads and load-displacement) of a notched component. A cracking criterion is given, applicable to quasi-brittle materials under monotonic loading. This procedure is based on a cohesive zone-crack model. Numerical predictions are in good agreement with a large experimental programme in which PMMA specimens of different shapes and sizes including U-notch radius and U-notch depth were tested. All experimental results are reported. The paper closes with a discussion of the proposed cracking criteria and some proposals for future work.

引用

页码：795 / 803

页数：9

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