Topology optimization for the seismic design of truss-like structures

Authors:
Iman Hajirasouliha;Kypros Pilakoutas;Hassan Moghaddam
Affiliations:
Department of Civil Engineering, The University of Nottingham, Nottingham, UK;Department of Civil and Structural Engineering, The University of Sheffield, Sheffield, UK;Civil Engineering Department, Sharif University of Technology, Tehran, Iran
Venue:
Computers and Structures
Year:
2011

Citing 2
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Abstract

A practical optimization method is applied to design nonlinear truss-like structures subjected to seismic excitation. To achieve minimum weight design, inefficient material is gradually shifted from strong parts to weak parts of a structure until a state of uniform deformation prevails. By considering different truss structures, effects of seismic excitation, target ductility and buckling of the compression members on optimum topology are investigated. It is shown that the proposed method could lead to 60% less structural weight compared to optimization methods based on elastic behavior and equivalent static loads, and is efficient at controlling performance parameters under a design earthquake.