Seismic Damage Responses of Concrete Structures Based on Lagrange Approach
The seismic damage responses of structures are researched in this essay by a general method induced from a mixed Lagrange approach. During the catastrophic course, the geometric, material and damage nonlinear effects are of great significance for the structural performance. Here, the authors make usage of a damage model to describe the innate defects in concrete materials and structures in service, which are deduced from a generalized standard material framework based on irreversible thermodynamics. According to generalized Hamilton principle, the Euler-Lagrange equation of the material and component can be derived from the integral action of generalized standard model which have the same physical base. The above expressions include the control equations of the damage constitutive model and the dynamical system concerned Then a numerical implementation technology is exploited due to a discrete variation method The approach in the paper permits consideration of multi-nonlinearity and can handle the embarrassment of different iteration methods between constitutive and structural analysis. Comparison between experiment and simulation indicates the validity and rationality of the model and algorithm in this essay.
Seismic response Generalized standard model Lagrange approach Euler-Bemoulli beam
Changjiang Shao Jianzhong Li Yongjiu Qian Qingkai Kong
State Key Laboratory of Disaster Prevention in Civil Engineering,Tongji University, Shanghai, China School of Civil Engineering, Southwest Jiaotong University, Chengdu, China CCCC Highway Consultants Co., Ltd, Beijing, China
国际会议
The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)
成都
英文
114-119
2009-05-10（万方平台首次上网日期，不代表论文的发表时间）