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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 19
DEVELOPMENTS IN COMPUTATIONAL ENGINEERING MECHANICS
Edited by: B.H.V. Topping
Paper XI.2

Failure Prediction of Inhomogeneous Orthotropic Material

P.P. Papados

Texas A & M University, Department of Civil Engineering, College Station, Texas, United States of America

Full Bibliographic Reference for this paper
P.P. Papados, "Failure Prediction of Inhomogeneous Orthotropic Material", in B.H.V. Topping, (Editor), "Developments in Computational Engineering Mechanics", Civil-Comp Press, Edinburgh, UK, pp 291-297, 1993. doi:10.4203/ccp.19.11.2
Abstract
Contemporary applications of failure criteria frequently incorporate two-dimensional or simplified three-dimensional methodologies for prediction of failure stresses. Motivation behind the development of a new multi-dimensional failure criterion is due mainly to the lack of a sufficiently accurate mathematical tool that accounts for the behavior of brittle material with anisotropic properties. Such a criterion should be able to provide a reliable maximum load estimate so that design of the structure is not penalized in terms of excessive weight requirements. The failure criterion developed is represented by a fracture surface in a six-dimensional stress space. The criterion is applied for failure prediction of SR-200 beryllium sheet structures, an inhomogeneous orthotropic material used widely in space applications. Two experiments are presented to verify the validity of the criterion.

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