| 矿岩料层动态粉碎应力－应变曲线的应变率效应分析 |
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| 引用本文： | 孟宪红,邢军,宋守志.矿岩料层动态粉碎应力－应变曲线的应变率效应分析[J].金属矿山,1996(1). |
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| 作者姓名： | 孟宪红 邢军 宋守志 |
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| 作者单位： | 东北大学 |
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| 摘 要： | 用自行研制的矿岩料层动态粉碎性能测试装置，对四种典型矿岩在五种不同应变率下进行实验研究，分析了应变率对应力－应变全过程曲线的影响。结果表明，应变率和应力－应变曲线相敏感，而且应变率效应随岩石物理力学性质和应力－应变曲线的不同发展阶段而改变。不同应变率下的岩石料层动态塑性特性可用Ｃｒｉｓｔｅｓｃｕ提出的拟线性塑性本构方程来描述。
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| 关 键 词： | 矿岩料层 应力－应变曲线 应变率 |
Effect Analysis of Strain Rate of Stress-strain Curve about Dynamic Crushing for Ore-rock Material Layer |
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| Meng Xianhong, Xing Jun, Song Shouzhi.Effect Analysis of Strain Rate of Stress-strain Curve about Dynamic Crushing for Ore-rock Material Layer[J].Metal Mine,1996(1). |
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| Authors: | Meng Xianhong Xing Jun Song Shouzhi |
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| Affiliation: | Northeastern University |
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| Abstract: | Through the test and study about the influence of strain rate on stress-strain curve forfour typical ore-rock by the dynamic crushing detector of rock material layer designed by oneself,it is enough to prove that the strain rate and stress-strain curve are sensitive each other,and the effect ofstrain rate is changed with the physico-mechanical nature and the different developing stage of stressstrain curve. The dynamic plasticity of rock material layer under different strain rate can be described byplasticity constitutive equation of pseudo-linear raised by Cristescu. |
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| Keywords: | Ore-rock material layer Stress-strain curve Strain rate |
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