| 基于积分法的铝合金厚板深度残余应力分析 |
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| 引用本文： | 廖凯,吴运新,龚海.基于积分法的铝合金厚板深度残余应力分析[J].中南大学学报(自然科学版),2010,41(1). |
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| 作者姓名： | 廖凯 吴运新 龚海 |
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| 作者单位： | 1. 中南大学,机电工程学院,湖南,长沙,410083;桂林电子科技大学,教学实践部,广西,桂林,541003
2. 中南大学,机电工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划项目 |
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| 摘 要： | 运用第一类线性积分形式建立剥除层残余应力与试样变形之间的关系;通过变形反求应力,还原厚板内部连续的应力变化,推导应力求解积分形式;进行层削法和裂纹柔度法测试实验,比较这2种方法的测试结果的异同。研究结果表明:运用积分法求解得到的残余应力场能较准确地反映厚板内部应力分布特点;积分中核函数决定力学方法解的特征,采用层削法所得结果反映了厚板剥除层内平均应力,采用裂纹柔度法所得结果则反映裂纹处应力的平均值,这2种方法都能较准确地反映厚板内部应力特征。
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| 关 键 词： | 积分法 层削法 裂纹柔度法 残余应力 |
Analysis of measuring residual stress depth profiling in aluminum alloy thick plate using integral method |
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| LIAO Kai,WU Yun-xin,GONG Hai.Analysis of measuring residual stress depth profiling in aluminum alloy thick plate using integral method[J].Journal of Central South University:Science and Technology,2010,41(1). |
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| Authors: | LIAO Kai WU Yun-xin GONG Hai |
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| Institution: | LIAO Kai1,2,WU Yun-xin1,GONG Hai1 (1. School of Mechanical , Electronical Engineering,Central South University,Changsha 410083,China,2. Practice , Experiment Station,Guilin University of Electronic Technology,Guilin 541003,China) |
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| Abstract: | Relationship between deformation in plate and residual stress in removal layer was established by using the first kind of linear integral, in which deformation inverse determined continuous stress profile through-depth in aluminum alloy thick plate. With removal layer methods and crack compliance method applied in experiment, the difference of the both methods was compared. The results show that the solution of integral method presents distribution character of residual stress in thick plate, and accords wi... |
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| Keywords: | integral method removal layer method crack compliance method residual stress |
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