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2014 年 05 月 15 日
Seminar - Damage Mechanics, Material Modelling and Forming Limit Diagram of sheet metals by Dr. Chi L. Chow
Date:15 May 2014 (Thursday)
Time:11:00 am – 12:00 pm
Venue:EF305, The Hong Kong Polytechnic University

Date: 15 May 2014 (Thursday)

Time: 11:00 am – 12:00 pm

Venue:EF305, The Hong Kong Polytechnic University

Abstract:

The theory of damage mechanics and its material modelling is first presented.  The practical importance of a unified fracture criterion based on the theory as opposed to that of the conventional criteria of fracture mechanics and maximum stress/strain are elucidated.  The importance and ability of the theory capable of quantifying the degree of damage in a material element is emphasized.  A set of the generalized damage-coupled elastic and plastic constitutive equations are formulated together with the damage-coupled yield surfaces and damage surfaces.  This is followed with the derivation of damage evolution equations. The second part of the presentation is related to the formulation of forming limit diagram for rate-dependent materials.  This includes both analytical and experimental investigations for validation of the proposed method of analysis.

Bio-sketch:

Dr. Chow is currently Professor of the Department of Mechanical Engineering, University of Michigan-Dearborn. In addition to his academic career, he also worked in various industries for about ten years including General Electric Co., and BF Goodrich Co. Dr. Chow’s main research interest is in the area of Mechanics of Solids and Structural Analysis with special emphasis on Mechanics of Fracture and Damage Mechanics.   The materials chosen for investigation include both metallic and composite materials subjected to static and dynamic/fatigue loading.  He has published over 250 technical papers in peer-review journals.   He has been the Editor-in-Chief of the International Journal of Damage Mechanics which he founded over 20 years ago.