盲孔法测定径向锻造身管表面残余应力方法研究

doi:10.3969/j.issn.1000-1093.2012.06.013

兵工学报 ›› 2012, Vol. 33 ›› Issue (6): 712-717.doi: 10.3969/j.issn.1000-1093.2012.06.013

盲孔法测定径向锻造身管表面残余应力方法研究

刘力力¹，樊黎霞¹，董雪花²

(1.南京理工大学机械工程学院, 江苏南京 210094; 2.南京理工大学理学院, 江苏南京 210094)

收稿日期:2011-03-03 修回日期:2011-03-03 上线日期:2014-03-04
作者简介:刘力力（1984—），女，博士研究生

Study on Measurement of Residual Stresses in Forged Barrel Surface

LIU Li-li ¹， FAN Li-xia ¹， DONG Xue-hua ²

(1.School of Mechanical Engineering,Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2.School of Science, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)

Received:2011-03-03 Revised:2011-03-03 Online:2014-03-04

摘要/Abstract

摘要： 为了找到一种准确简便的测定径向锻造身管表面残余应力的方法，将盲孔法测定平板表面残余应力的理论应用到径向锻造身管表面残余应力的测量中。应用有限元软件计算盲孔释放系数的方法，对比在相同材料、受力情况与钻孔条件下的身管表面盲孔的释放系数与平板表面盲孔的释放系数，得到了盲孔法测定径向锻造身管表面残余应力的适用性范围；结合有限元法计算释放系数的优越性，提出了一种通过直接修正释放系数来修正由钻孔偏心所引起的误差方法。并应用盲孔法测定了某锻后身管表面的残余应力。

关键词: 机械制造工艺与设备, 盲孔法, 残余应力, 有限元, 释放系数, 钻孔偏心

Abstract: The theory of the blind-hole method used to measure surface residual stresses in plate was applied to measure surface residual stresses in forged barrel accurately. A kind of FEA software ABAQUS was used to calculate the relaxation coefficients of the blind-hole, and the applicable range of the blind-hole method to measure the surface residual stresses in forged barrel was confirmed by comparing the relaxation coefficients of the blind-hole in the plate and in the forged barrel under the same material, the same force and the same drilling condition. A new method to minimize the off-center error was proposed. The surface residual stresses in a forged barrel were measured by using this method.

中图分类号:

TG156

刘力力，樊黎霞，董雪花. 盲孔法测定径向锻造身管表面残余应力方法研究[J]. 兵工学报, 2012, 33(6): 712-717.

LIU Li-li ， FAN Li-xia ， DONG Xue-hua. Study on Measurement of Residual Stresses in Forged Barrel Surface[J]. Acta Armamentarii, 2012, 33(6): 712-717.

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盲孔法测定径向锻造身管表面残余应力方法研究

Study on Measurement of Residual Stresses in Forged Barrel Surface

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