Analysis of folded plate structures including time effects using finite strips method

Akram S. Mahmood and Bayan S. Al-Nu’man

African Journal of Engineering Research
Published: March 19 2015
Volume 3, Issue 1
Pages 14-36

Abstract

The modified higher order finite strip has been attempted for the analysis of folded plate structures including time effects. The finite strip method may be considered to be a parallel development with finite element method, by considering strips rather than elements. Creep and aging phenomena for linear viscoelastic material of concrete are fully considered in this analysis. For checking the efficiency and accuracy of the suggested method, the examples are solved by refined finite element (3D-20 Node Viscoelastic element) using ANSYS package program. Results of deflection and longitudinal stresses by the proposed finite strip method are shown to have good agreement with the finite element analysis. For instance, the maximum difference in deflection is found about 8% for age (7 days) and 13% for age (1000 days). The difference in longitudinal stresses is found about 18% for age (7 days) and 10% for age (1000 days).

Keywords: Finite strip, finite element, folded plate structures, visco-elastic, time dependent analysis.

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