| NONLINEAR ELASTIC-DAMAGE CONSTITUTIVE EQUATION OF BRITTLE ROCK AND EXPERIMENAAL VERIFICATION |
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| 作者姓名： | Xiao Qinxue Zhu Jingmin zhang Siping |
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| 作者单位： | Xiao Qinxue;Zhu Jingmin;zhang Siping Department of Civil Engineering |
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| 摘 要： | on the basis of the experimental studies of mechanical properties in brittle rock,the generalized elastic modulus,generalized elastic Poisson ratio,irreversible deformation Poisson ratio and damage deformation characteristic arediscussed.And then,a new damage variable is defined.A new nonlinear elastic-damage constitutive equation is built and the damage evolution equation is proposed.The nonlinear elastic-damage constitutive equation is verified in the uniaxialcompression test of quartz sandstone in Chongqing.The results show that reasonableagreement exists between the theoretical analysis and the experimental data.
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| 关 键 词： | brittle rock nonlinear damage constitutive equation |
NONLINEAR ELASTIC-DAMAGE CONSTITUTIVE EQUATION OF BRITTLE ROCK AND EXPERIMENAAL VERIFICATION |
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| Xiao Qinxue,Zhu Jingmin,zhang Siping.NONLINEAR ELASTIC-DAMAGE CONSTITUTIVE EQUATION OF BRITTLE ROCK AND EXPERIMENAAL VERIFICATION[J].Storage & Process,1990(2). |
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| Authors: | Xiao Qinxue Zhu Jingmin zhang Siping |
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| Institution: | Xiao Qinxue;Zhu Jingmin;zhang Siping Department of Civil Engineering |
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| Abstract: | on the basis of the experimental studies of mechanical properties in brittle rock,the generalized elastic modulus,generalized elastic Poisson ratio,irreversible deformation Poisson ratio and damage deformation characteristic arediscussed.And then,a new damage variable is defined.A new nonlinear elastic-damage constitutive equation is built and the damage evolution equation is proposed.The nonlinear elastic-damage constitutive equation is verified in the uniaxialcompression test of quartz sandstone in Chongqing.The results show that reasonableagreement exists between the theoretical analysis and the experimental data. |
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| Keywords: | brittle rock nonlinear damage constitutive equation |
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