A simple method based for computing crack shapes

被引：4
|
作者：
Peng, D. [1 ]
Huang, P. [1 ]
Jones, R. [1 ]
Bowler, A. [2 ]
Edwards, D. [3 ]
机构：
[1] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia
[2] RAAF Base Edinburgh, Maritime Syst Project Off MPSPO, Edinburgh, SA 5111, Australia
[3] Airbus Grp Australia Pacific, Edinburgh, SA 5111, Australia
来源：
ENGINEERING FAILURE ANALYSIS | 2016年 / 59卷
关键词：
Crack shapes; Intergranular cracking; Nastran; Genetic algorithm; EXTENDED FINITE-ELEMENT; GROWTH; PROPAGATION; SIMULATION;
D O I：
10.1016/j.engfailanal.2015.11.016
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The growth of cracks from small naturally occurring material discontinuities plays a major role in the operational lifespan of aircraft structures. Calculating the life of an airframe structure requires the determination of the crack path(s) which for complex real life geometries can often be highly complex. This paper presents a simple method based on finite element analysis for estimating the crack growth path. The analysis is based on an element removal approach and uses the major principal stress as the failure criteria. Evolution strategies are derived from the biological process of evolution. Three examples are presented demonstrating the utility of the proposed technique. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：41 / 56
页数：16
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