STOCHASTIC FLUCTUATION ANALYSIS FOR HETEROGENEOUS MATERIAL DURING ENTIRE LOADING PROCESS

摘要：

In the present paper the stochastic damage model is introduced to represent the heterogeneity of materials.Then the Karhunen-Loeve orthogonal decomposition is adopted to simulate the stochastic field mentioned in the former model.Based on the probability density evolution method (PDEM) developed by the authors research group,probability density function (PDF) and its evolution are provided.It is shown that some of the simulation results of PDF are far from well-known regular distribution types.Additionally,the correlativity of stochastic fields has significantinfluence on the computing result,precision and efficiency of PDF responses for the stochastic materials.

关键词： stochastic fluctuation heterogeneous materials K-L decomposition probability density function

作者: X.D.Ren S.J.Zeng J.Li

作者单位: School of Civil Engineering,Tongji University,1239 Siping Road,Shanghai 200092,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 224-227

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）