Non-Linear Analysis of Steel Frames Subjected To Seismic Force
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 6
Abstract
In this paper; non-linear analysis of steel frames subjected to seismic forces is presented. The analysis adopts the beam-column approach. The formulation of beam-column element is is based on Eulerian approach. Changes in member chord length due to axial strain and flexural bowing are taken into account. A modified tangent stiffness matrix which takes into consideration the geometrical non-linearity is used. A special form to formulate the seismic forces and the monotonic load-deflection response of frames is traced using the incremental load control Newton-Raphson iterative technique. It was concluded that considering large displacements tend to reduce the collapse loads of steel frame in the order of (4-40%) depending upon the number of stories of the frame.
Authors and Affiliations
Wail N. Al-Rifaie Ph. D, Mohammed Yahya T. Zaindan M. Sc
Keywords
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