Journal
COMPUTERS & STRUCTURES
Volume 76, Issue 6, Pages 703-712Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-7949(99)00187-X
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To measure accurately the elastic modulus of a metal, E, can be a difficult task when a specimen undergoes plastic strains. Moreover, some failure criteria, such as those associated with Continuum Damage Mechanics, require the change of elastic modulus with strain to define a measure of damage, D, in a material or structure. Thus, it is important to assess the possible geometrical influence of a specimen on the measurement of the elastic modulus at different deformation levels. It is shown in this article, with the aid of a numerical simulation, that any plastic strains induce important geometrical effects in the evaluation of E, which have a significant influence on the evaluation of the scalar damage parameter, D. (C) 2000 Elsevier Science Ltd. All rights reserved.
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