报告题目：General Thermoelasticity Solution vs. Classical Theory Solutions: Cracked Layer under Thermal Shock

报告人：Richard B Hetnarski (Rochester Institute of Technology, USA)

报告时间：2014年10月30日 15：30

报告地点：明故宫校区A18-807

主办单位：机械结构力学及控制国家重点实验室、国际合作交流处、科协、航空宇航学院

报告内容简介: In this talk, a cracked layer is considered under thermal shock and is analyzed once by the Lord-Shulman theory and once by the classical theory.  In this way the effect of second sound of Lord-Shulman theory on the crack is investigated. The Galerkin method is invoked to obtain the discretized finite element model of the cracked layer. The eight- node quadrilateral element is used and the nodes near the crack tip are replaced to introduce the crack tip singularity (Barsoum element).  The discretized forms of Navier and energy equations are solved simultaneously in time domain by Newmark integration algorithm. The J-integral formulation in dynamical thermal form is implemented to obtain stress intensity factors from the finite element solution of the problem. The results are shown graphically, and the effect of particular parts of the solutions is explained.

 

报告人简介：Emeritus Professor in Department of Mechanical Engineering, Rochester Institute of Technology; Founder and Editor-in-Chief of the Journal of Thermal Stresses; Associate Editor of Applied Mechanics Reviews (1988-2001), Editor of the 5-volume handbook on Thermal Stresses; Editor of the 11-volume Encyclopedia of Thermal Stresses; Author and Editor of Books.