| 试验机弹性储能对岩石力学性能测试的影响 |
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| 引用本文： | 彭瑞东,谢和平,鞠杨,周宏伟.试验机弹性储能对岩石力学性能测试的影响[J].力学与实践,2005,27(3):51-55. |
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| 作者姓名： | 彭瑞东 谢和平 鞠杨 周宏伟 |
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| 作者单位： | 1. 中国矿业大学北京岩石混凝土破坏力学重点实验室,北京,100083
2. 中国矿业大学北京岩石混凝土破坏力学重点实验室,北京,100083;四川大学,成都,610065 |
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| 基金项目： | 国家“973”项目(2002CB412705,2002CB412707)
国家自然科学基金“创新研究群体”项目(50221402)资助． |
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| 摘 要： | 在材料试验机上进行岩石力学性能测试时，如何准确测量岩石的变形是整个测试分析的基础．为了具体考察试验机刚度对岩石变形测量的影响程度，在两台不同的试验机上进行了岩石的单轴压缩试验，通过对加卸载过程中试验系统及岩石能量变化的分析，详细研究了试验系统弹性储能对岩石变形测量的影响，进而给出了基于试验机刚度的修正计算方法，来确定岩石在测试过程中的变形．
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| 关 键 词： | 材料试验机 弹性储能 岩石 力学性能测试 应力应变曲线 |
| 修稿时间： | 2004年11月18 |
EFFECT OF ELASTIC ACCUMULATION ENERGY OF TESTING MACHINE ON THE MECHANICAL MEASUREMENT OF ROCKS |
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| PENG Ruidong,XIE Heping,Ju Yang,Zhou Hongwei.EFFECT OF ELASTIC ACCUMULATION ENERGY OF TESTING MACHINE ON THE MECHANICAL MEASUREMENT OF ROCKS[J].Mechanics and Engineering,2005,27(3):51-55. |
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| Authors: | PENG Ruidong XIE Heping Ju Yang Zhou Hongwei |
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| Abstract: | It is a fundamental problem of the rock mechanical measurements in material testing machine how to measure the rock deformation exactly. Rock uniaxial compression tests were carried out in two different testing machine so as to investigate the effect of machine stiffness on the deformation measurement. The energy transfer and conversion of testing system and sample during the loading and unloading processes are analyzed in this paper. It is found that the elastic accumulation energy of material testing machine affects the mechanical measurement of rocks. Moreover a revised method is proposed which can be adopted to calculate the deformation of rock during the test. |
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| Keywords: | material testing machine rock stress-strain curve elastic strain energy |
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