三维J积分的能量原理
Energy Principle of Three-Dimensional J Integral
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摘要: 目前三维J积分存在着一些不同观点的表达式,本文利用普遍的势能原理和Green定理导出三维J积分的表达式.文中并简要说明它的物理意义和工程应用方法;结果对于微小变形和大变形均适用.Abstract: Various expressions of three-dimensional J integral are proposed. We derive here three-dimensional J integral by means of general potential energy principle and Green's theo-rem. Its physical meaning and application are shown in the paper,the results are true both for infinitesimal and finite deformation.
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