| 引用本文: | 袁杰红,段静波.对接厚板表面裂纹的残余应力强度因子.[J].国防科技大学学报,2007,29(6):1-5.[点击复制] |
| YUAN Jiehong,DUAN Jingbo.The Residual Stress Intensity Factor of Surface Cracks in a Thick Plate with Butt Joints[J].Journal of National University of Defense Technology,2007,29(6):1-5[点击复制] |
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| 对接厚板表面裂纹的残余应力强度因子 |
| 袁杰红, 段静波 |
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(国防科技大学 指挥军官基础教育学院，湖南 长沙 410073)
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| 摘要: |
| 利用线弹簧模型求解对接厚板表面裂纹的残余应力强度因子。基于Reissner板理论和连续分布位错思想，将对接厚板表面裂纹问题归结为一组Cauchy型奇异积分方程， 并采用Gauss-Chebyshev方法给出了奇异积分方程的数值结果，并与有限元解进行比较，计算结果表明：用线弹簧模型解决含残余应力表面裂纹问题不仅是合理可行的，而且是一种简单方便的方法，便于工程实际应用。 |
| 关键词: 厚板 线弹簧模型 表面裂纹 残余应力强度因子 |
| DOI： |
| 投稿日期：2007-06-20 |
| 基金项目:国家部委基金资助项目 |
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| The Residual Stress Intensity Factor of Surface Cracks in a Thick Plate with Butt Joints |
| YUAN Jiehong, DUAN Jingbo |
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(College of Basic Education for Commanding Officers, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The paper presents an approach to deal with residual stress intensity factors for surface cracks in a thick plate with butt joints by using line-spring model. Based on the Reissner's plate theory along with continuously distributed dislocation thought, the problem of the thick plate with butt joints is treated with a set of Cauchy-type singular equations, which are resolved by Gauss-Chebyshev method. The numerical results of the present method for the surface crack are compared with those of finite element method, and the compared results show good agreement. It is indicated that the line-spring model is not only reasonable and viable for surface cracks analysis in residual stress fields, but simple and convenience for engineering application. |
| Keywords: thick plate line-spring model surface crack residual stress intensity factor |
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