西南交通大学“创源”大讲堂研究生学术讲座
讲座时间：2016年10月12日（周三）上午10:00
讲座地点：牵引动力国家重点实验室红楼218#
主 讲 人：Prof. Dr.-Ing Dietmar Gross（TU Darmstadt,Germany）
讲座题目： Fracture Mechanics in Antarctica
摘 要：The ongoing disintegration of large ice shelf parts in Antarctica raise the need for a better understanding of the physical processes that trigger critical crack growth in ice shelves. Finite elements in combination with configurational forces facilitate the analysis of single surface fractures in ice under various boundary conditions and material parameters. The principles of linear elastic fracture mechanics are applied to show the strong influence of different depth dependent functions for the density and the Young’s modulus on the stress intensity factor KI at the crack tip. Ice, for this purpose, is treated as an elastically compressible solid and the consequences of this choice in comparison to the predominant incompressible approaches are discussed. The computed stress intensity factors KI for dry and water filled cracks are compared to critical values KIc from measurements that can be found in literature. In addition, the frost wedging mechanism is discussed and related results are presented.
简 历： 1959-65 University of Rostock, Dipl.-Ing. in „Applied Mechanics“；1965-68 University of Rostock, Institute of Mechanics, PhD Student ；1968 Dr.-Ing. degree in Mechanics;
Positions: 1968-71 University of Rostock, Head assistant in Dept. of Solid Mechanics；1971-76 University of Stuttgart, Research associate；1976-80 Assoc. Professor, TH Darmstadt, Institute of Mechanics；1980- Full Professor TU Darmstadt;
Research: Structural Mechanics, Vibrations, Wave Propagation, Fracture and Damage Mechanics, Micromechanics
Publications: More than 350 papers and 13 textbooks and monograph
Dean and Director of the Department / Institute of Mechanics, Member of the Polish Academy of Sciences
主 办：研究生院
共同承办：力学与工程学院 牵引动力国家重点实验室
