STOCHASTIC VISCOUS-DAMAGE CONSTITUTIVE MODEL FOR CONCRETE

摘要：

　　A new rate-dependent stochastic damage model for the dynamic modeling of concrete is presented in the paper.Firstly,the model is formulated on the basis of the bi-scalar inviscid stochastic damage model,from which,the static stochastic evolution of damage is strictly derived.Then,rate dependency of concrete is included by means of viscous-damage constitutive relationships.The inclusion of the Stefan effect results in an increased strength with increasing loading rate.The model predictions are tested against experimental results on concrete specimens that cover different strain rates.The results demonstrate the capabilities of the proposed model to predict the rate-dependency of concrete failure behavior.

关键词： Concrete constitutive law strain rate effect dynamic damage evolution Stefan effect

作者: Jie Li Qiaoping Huang

作者单位: Tongji University, Shanghai 200092, P.R.China

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)

会议地点: 武汉

会议语种:英文

页码: 95-105

在线出版日期: 2012-11-17（万方平台首次上网日期，不代表论文的发表时间）