A DYNAMIC ELASTIC-PLASTIC MICROPLANE CONSTITUTIVE MODEL FOR CONCRETE

摘要：

A dynamic elastic-plastic microplane constitutive model for concrete based on M2 which is proposed by B.P. Bazant etc.,is presented in this paper. The state of each microplane is characterized by normal deviatoric and volumetric strains and shear strain.The strain-stress relations for deviatoric and shear component is described as elastic-plastic model. A new concept: failure strain has been introduced. The stress shall be zero after the microplane stress reaches failure stain level. It is suggested to describe the strain rate effects in the macro stress-strain relation by adjusting the elastic modulus and yield strain in the all stress-strain relations on the microplane. Finally 3 calculation examples have been adopted to verify the rationality and correctness of the proposed module.

关键词： Constitutive model Concrete Microplane Elastic-plastic Strain-rate

作者: Jun-Jie Wang Ming-Xiao Jia Cheng Wei

作者单位: Department of Bridge Engineering,Tongji University,Shanghai 200092,P.R. China Department of Bridge Engineering,Tongji University,Shanghai 200092,P.R. China College of Civil Engin Department of Bridge Engineering,Tongji University,Shanghai 200092,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1170-1176

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）