Experimental and analytical estimates of fatigue crack closure in an aluminium-copper alloy .2. A finite element analysis

被引：23

作者：

Ashbaugh, NE

Dattaguru, B

Khobaib, M

Nicholas, T

Prakash, RV

Ramamurthy, TS

Seshadri, BR

Sunder, R

机构：

[1] INDIAN INST SCI,BANGALORE 560012,KARNATAKA,INDIA

[2] MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433

[3] NATL AEROSP LABS,BANGALORE 560017,KARNATAKA,INDIA

[4] BISS RES,BANGALORE 560003,KARNATAKA,INDIA

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1997年 / 20卷 / 07期

关键词：

fatigue crack growth; crack closure; elastic-plastic finite element analysis; linear and power-law strain hardening; load-v-COD data;

D O I：

10.1111/j.1460-2695.1997.tb01540.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A numerical investigation of the fatigue crack closure phenomenon has been performed by an elastic-plastic finite element analysis. Computer software was developed to consider many aspects affecting plasticity-induced crack closure. Linear and power-law hardening models are considered in the finite element analysis. The paper presents results from the study carried out on compact tension (CT) coupons at various crack lengths corresponding to different loading conditions. Finally the results of the analysis are compared with the experimental estimates of fatigue crack closure levels obtained from laser interferometry, scanning-electron and transmission-electron fractography presented in Part I of this paper on identical specimens.

引用

页码：963 / 974

页数：12

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