无限大板圆孔边双裂纹的裂纹面位移权函数解
收稿日期: 2012-12-27
修回日期: 2013-03-05
网络出版日期: 2013-03-19
Weight Function Solutions of Crack Surface Displacements for Double Cracks Emanating from a Circular Hole in an Infinite Plate
Received date: 2012-12-27
Revised date: 2013-03-05
Online published: 2013-03-19
童第华 , 吴学仁 . 无限大板圆孔边双裂纹的裂纹面位移权函数解[J]. 航空学报, 2013 , 34(10) : 2341 -2348 . DOI: 10.7527/S1000-6893.2013.0162
This paper is aimed at crack surface displacement solutions for cracks at a circular hole, which is a common crack configuration in aircraft structures. The weight function method is used for calculating crack surface displacements for double cracks under both remote uniform tension and partial crack surface uniform segment loading. It is found that the weight function method is a very efficient and highly accurate method for calculating crack surface displacements under arbitrary load conditions. By rational curve fitting to the results obtained from the weight function method, accurate analytical expressions for crack surface displacements for the two load cases are developed. The present study provides an efficient and accurate means for crack closure and crack opening stress analysis for double cracks emanating from a circular hole in an infinite plate.
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