Nonlinear Analysis of Space Structures under Dynamic Loads

Volume 2 - Issue 3

Qasim M Shakir*

Received: May 18, 2018;   Published: June 11, 2018

DOI: 10.32474/TCEIA.2018.03.000140

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Abstract

A theoretical analysis is presented for estimating the in-space large displacement elastic stability behavior of structures subjected to either proportional or non-proportional dynamic loads. The analysis adopts the beam-column approach, which models the structure’s members as beam-column elements. The formulation of the beam-column element is based on the Eulerian approach allowing for the influence of the axial force on the bending and the torsion stiffness. Also, change in member chord length due to the axial deformation and flexural bowing are taken into account. Newmark- β method is used as a time integration technique to plot the time-deformation curves. Damping effect is expressed using Raleigh damping matrix. Several examples have been solved to insure the accuracy of the present analysis.

Abstract| Introduction| Member orientation matrix| Member Tangent Stiffness Matrix| Dynamic Analysis| The Computational Technique| Applications| Conclusion| References|