| 钻孔法测量残余应力时释放系数的标定与计算 |
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| 引用本文： | 王世中,欧阳宇平.钻孔法测量残余应力时释放系数的标定与计算[J].航空学报,1990,11(5):300-304. |
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| 作者姓名： | 王世中 欧阳宇平 |
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| 作者单位： | 北京航空航天大学
(王世中)，北京航空航天大学(欧阳宇平) |
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| 摘 要： | <正> 用钻孔法测量残余应力时,使用的释放系数将对构件的残余应力测量精变产生影响。计算释放系数的理论方法有多种。其中普遍应用的公式,是由弹性力学通孔公式推导的应变片中心点处计算式。
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| 关 键 词： | 铝合金 残余应力 钻孔法 释放系数 |
THE CALIBRATION COEFFICIENTS EXPERIMENTALLY DETERMINED AND THEORETICALLY CALCULATED IN MEASURING RESIDUAL STRESSES BY HOLE-DRILLING METHOD |
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| Beijing University of Aeronautics and Astronautics Wang Shizhong and Ouyang Yuping.THE CALIBRATION COEFFICIENTS EXPERIMENTALLY DETERMINED AND THEORETICALLY CALCULATED IN MEASURING RESIDUAL STRESSES BY HOLE-DRILLING METHOD[J].Acta Aeronautica et Astronautica Sinica,1990,11(5):300-304. |
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| Authors: | Beijing University of Aeronautics and Astronautics Wang Shizhong and Ouyang Yuping |
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| Institution: | Beijing University of Aeronautics and Astronautics Wang Shizhong and Ouyang Yuping |
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| Abstract: | The present paper discusses the calibration coefficient experimentally determined and theoretically calculated in measuring residual stresses by hole-drilling method used to evaluate residual stresses in aluminium alloy. The results show that the solution of Schajer's finite-element method is suitable for thick parts and other expressions can be applied to thin parts, For those parts having intermediate thickness an experimental determinatiion of coefficients is necessary In addition, it seems that application of Schajer' s solution modified by our study tallies with experimental conditions. |
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| Keywords: | aluminium alloy residualstress hole drilling me-thod calibration coefficient |
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