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RESEARCH PAPERS

A Progressive Damage Modeling Based on the Continuum Damage Mechanics and its Finite Element Analysis

[+] Author and Article Information
Seung Jo Kim, Wie Dae Kim

Department of Aerospace Engineering, Seoul National University, Kwanak-Ku, Seoul, 151-742, Korea

J. Appl. Mech 61(1), 45-53 (Mar 01, 1994) (9 pages) doi:10.1115/1.2901419 History: Received July 05, 1991; Revised June 22, 1992; Online March 31, 2008

Abstract

A continuum damage modeling based on the theory of materials of type N is proposed and its nonlinear finite element approximation and numerical simulation are carried out. To solve the finite elastoplasticity problems, the reasonable kinematical strain measure for large deformed solids are introduced and constitutive relations based on the theory of materials of type N are derived. These highly nonlinear equations are reduced to the incremental weak formulation and approximated by the theory of nonlinear finite element method. To verify the theory and the computer code, the computational simulation of the uniaxial elongation is carried out and the results are compared with the actual experiment. Two example problems, bending problem and billet forming problem, are simulated, and the deformed shapes and the progressive results of the damage variable are presented.

Copyright © 1994 by The American Society of Mechanical Engineers
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