FRACTURE AND FAILURE MODELLING ACTIVITIES AT SANDIA/CALIFORNIA: AN OVERVIEW
An overview of the fracture and failure modelling activities in the Mechanics of Materials Department at Sandia National Laboratories in Livermore,California is presented.Sandia/Califomia has been engaged in the development of high performance computing based predictive modeling and simulation capabilities in support of the Science-Based Stockpile Stewardship Program of the U.S.Department of Energy.Of particular interest is the development of constitutive models that can efficiently and accurately predict post-failure material response and load-redistribution in systems and components.Fracture and failure are inherently multi-scale and our philosophy is to include required physics in our models at all appropriate scales.We approach the problems from the continuum point of view and intend to provide continuum models that include dominant subscale mechanisms.Moreover,numerical algorithms are needed to allow implementation of physical models in high performance computing codes such that large-scale modeling and simulation can be conducted.Other drivers of our effort include the emerging application of micro-and nano-systems and the increasing interest in biotechnology.In this presentation,our research in fracture and failure modeling,atomic-continuum coupling code development,microstructure-material properties relationships exploration,and general continuum theories advancement will be presented.Where appropriate,examples will be given to demonstrate the utility of the models.
E.P.Chen
Mechanics of Materials Department,Sandia National Laboratories,Livermore,California,USA
国际会议
第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)
安徽黄山
英文
1239
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）