| 考虑塑性体积变化的弹塑性应力测量理论 |
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| 引用本文： | 张亦良,张庆丰,杨家辉,高萍,姚希梦.考虑塑性体积变化的弹塑性应力测量理论[J].机械工程学报,1999,35(4):1. |
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| 作者姓名： | 张亦良 张庆丰 杨家辉 高萍 姚希梦 |
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| 作者单位： | 北京工业大学机电学院,北京,100022 |
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| 摘 要： | 考虑到许多金属材料塑性体积变化不等于零的事实， 建立了塑性体积变化的基本本构方程。为了能够根据全应变的测量值求得弹塑性应力值， 将塑性应变由全应变中进行了分离，并给出了基本方程中各参数的标定方法。同不考虑塑性体积变化的传统理论相比， 可作为各种结构物用电测法测定弹塑性应力的更佳的理论基础。
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| 关 键 词： | 弹塑性应力测量 应变空间 塑性体积变化 塑性泊松比 |
ON ELASTO-PLASTIC STRESS MEASUREMENT THEORY CONSIDERING THE CHANGE OF PLASTIC VOLUME |
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| Zhang Yiliang,Zhang Qingfeng,Yang Jiahui,Gao Ping,Yao Ximeng.ON ELASTO-PLASTIC STRESS MEASUREMENT THEORY CONSIDERING THE CHANGE OF PLASTIC VOLUME[J].Chinese Journal of Mechanical Engineering,1999,35(4):1. |
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| Authors: | Zhang Yiliang Zhang Qingfeng Yang Jiahui Gao Ping Yao Ximeng |
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| Affiliation: | Beijing Polytechnic University |
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| Abstract: | Considering the fact that plastic volume's change do not be neglected in many kinds of metal, the constitutive equations which taking account of the effect of plastic volume's change are established. In order to obtain the elasto plastic stress from the measured data on total strain, plastic strain is separated from total strain and gave the calibration method of parameters in the constitutive equations. Comparing with the traditional theory which does not consider the plastic volume's change, it is a better basis for measuring elasto plastic stress in structures. |
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| Keywords: | Elasto plastic stress measurement Strain space Plastic volume's change Plastic poisson ratio |
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