Study on Plasticity Modification for Measuring High Residual Stress by Hole-Drilling Method |
| |
Authors: | Jianyi ZHENG Chuanyan ZHOU Gaofeng ZHENG Junhui LIN |
| |
Affiliation: | Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102,Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102,Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102 and Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361102 |
| |
Abstract: | Hole-drilling method is a commonly used method for measuring residual stress. The calibration coefficients in ASTM E837-13a would cause large errors due to the plasticity deformation of materials. In the study, calibration coefficients were modified in the plasticity deformation stage based on the distortion energy theory. The calibration experiment of calibration coefficients was simulated by the finite element model, and the plasticity modification formulas of 7075 aluminum alloy were obtained. From the results of uniaxial tensile loading test, the measuring errors of high residual stress are significantly reduced from -4.071% ~ 53.440% to -5.140% ~ 0.609% after the plasticity modification. This work provides an effective way to expand the application of hole-drilling method. |
| |
Keywords: | Calibration Coefficients Finite Element Analysis Plasticity Modification Hole-drilling Method Residual Stress |
|
| 点击此处可从《国外电子测量技术》浏览原始摘要信息 |
|
点击此处可从《国外电子测量技术》下载免费的PDF全文 |
|