| 含微裂纹弹性体的应力应变关系 |
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| 引用本文： | 周建平,李爱丽,余芳儒.含微裂纹弹性体的应力应变关系[J].力学学报,1994,26(1):49-59. |
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| 作者姓名： | 周建平 李爱丽 余芳儒 |
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| 作者单位： | 长沙国防科技大学航天与材料工程学院宇航技术系，410073 |
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| 摘 要： | 本义建立了考虑裂纹闭合和裂纹表面摩擦影响的含微裂纹弹性体的应力应变关系，给出了柔度张量增量的显式表达式。对于二维平面应力和平面应变状态，给出了等效工程弹性系数。数值计算结果表明，裂纹闭合和裂纹面摩擦对裂纹体的应力应变关系和等效工程弹性系数有重要影响。
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| 关 键 词： | 微裂纹断裂 弹性体 应力应变 |
THE STRESS-STRAINLAW OF ELASTIC BODY WITH MICROCRACKS |
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| Abstract: | The st ress- strain law of elastic body with microcracks is derived in which craick closing and crack surface friction are taken into consideration.An explicit expressionof flexibility tensor increment is found.The equivalent engineering moduli are given for thecases of two dimensional plane stress and plane strain.Numerical results show the noticeableinfluence of crack closing and crack surface friction on the stress-strain law of elastic bodywith micracracks. |
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| Keywords: | constitutive law microcracks damage fracture |
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