Open Access

ARTICLE

A Post-Processing Scheme to Evaluate Transverse Stresses for Composite Panels under Dynamic Loads

by K. Lee¹, H. Park², S.W. Lee³

1 Assistant Research Scientist, University of Maryland, College Park, MD, USA.
2 Senior Research Engineer, Hyundai Motor Company, Republic of Korea.
3 Professor, Aerospace Engineering, University of Maryland, College Park, MD, USA.

Computer Modeling in Engineering & Sciences 2008, 32(3), 113-122. https://doi.org/10.3970/cmes.2008.032.113

Abstract

A post-processing scheme is presented to accurately determine transverse shear and normal stresses in composite panels undergoing geometrically nonlinear deformation under dynamic loading conditions. Transverse stresses are assumed through thickness at a point of interest and are recovered via a one-dimensional finite element method. The finite element method is based on the least square functional of the error in the equilibrium equation along the thickness direction and utilizes the in-plane stresses and resultant transverse shear forces per unit length obtained by a shell element analysis. Numerical results demonstrate that, with minimal addition of computational efforts, the present post-processing approach can be used to accurately determine the time history of transverse stresses at a point of interest in composite structures under dynamic loading.

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Keywords

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