High Accurate Residual Stress Evaluation by Deep Hole Drilling Technique Considering Three-dimensional Stress Fields >(
High Accurate Residual Stress Evaluation by Deep Hole Drilling Technique Considering Three-dimensional Stress Fields >(
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考虑三维应力场的深孔钻削技术高精度残余应力评估 >(
DOI：
10.2207/qjjws.31.124s
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Mochizuki
中科院分区：
文献类型：
--
作者：
Houichi Kitano;Shigetaka Okano;M. Mochizuki
深孔钻削技术作为一种测量通厚残余应力的方法，近年来受到了广泛的关注。然而，DHD技术存在一些准确性问题。原因之一是传统的计算公式假定参考孔周围的应力条件为二维平面应力。本文提出了一种新的基于三维应力函数的残余应力评估公式和方法。然后，用有限元法对已知的应力场分别用传统公式和新公式进行计算，比较两种计算结果的精度。结果表明，与传统计算公式相比，该计算公式能更好地计算残余应力。
The deep hole drilling (DHD) technique has received much attention in recent years as a method for measuring through-thickness residual stresses. However, some accuracy problems occur with the DHD technique. One reason is that the traditional evaluation formula assumes that the stress condition around the reference hole is two-dimensional plane stress. In this study, a new evaluation formula and procedure are proposed using three-dimensional stress functions to evaluate the residual stress more accurately. Then, a known stress field is evaluated by the traditional formula and the new formula using the finite element method to compare the accuracy of the both results. These results indicate that the proposed formula can evaluate the residual stress better than the traditional formula can.