報告題目：General Thermoelasticity Solution vs. Classical Theory Solutions: Cracked Layer under Thermal Shock
報告人：Richard B Hetnarski (Rochester Institute of Technology, USA)
報告時間：2014年10月30日 15：30
報告地點：明故宮校區A18-807
主辦單位：機械結構力學及控制國家重點實驗室、國際合作交流處、科協、航空宇航學院
報告内容簡介: 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.
報告人簡介：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.
