Numerical analysis on special cracking phenomena of residual compressive inter-layers in ceramic laminates

被引：22

作者：

Chen, C. R. ^{[1
,2
,5
]}

Bermejo, R. ^{[3
]}

Kolednik, O. ^{[4
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Compos, Shanghai 200240, Peoples R China

[2] Mat Ctr Leoben, A-8700 Leoben, Austria

[3] Univ Leoben, Inst Struktur & Funkt Skeram, A-8700 Leoben, Austria

[4] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

[5] Univ Sydney, Sch Aerosp Mech & Mech Engn, CAMT, Sydney, NSW 2006, Australia

来源：

ENGINEERING FRACTURE MECHANICS | 2010年 / 77卷 / 13期

基金：

澳大利亚研究理事会;

关键词：

Residual stress; Layered ceramics; Finite element analysis; J-integral; Brittle fracture; THRESHOLD STRENGTH; EDGE CRACKING; BIFURCATION; COMPOSITES; THICKNESS; TOUGHNESS; EXHIBIT; SURFACE; STRESS;

D O I：

10.1016/j.engfracmech.2010.06.020

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Finite element computations are performed to analyze the phenomena of edge cracking and crack bifurcation in two ceramic laminates composed by tensile thick layers and compressive thin layers. The difference between these two laminates is the thickness of the compressive thin layers. Experimental results performed by one of the authors in previous works show that edge cracks exist in only one laminate, while crack bifurcation occurs in both laminates under bending. To understand the cracking phenomena observed in experiments, the energy release rates are calculated. Numerical results show that the initiation of crack bifurcation can be explained by the near-tip J-integral, provided that micro-cracks exist near the crack tip. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2567 / 2576

页数：10

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