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Shock and Vibration
Volume 2018, Article ID 1952050, 19 pages
https://doi.org/10.1155/2018/1952050
Research Article

Finite Particle Method-Based Collapse Simulation of Space Steel Frame Subjected to Earthquake Excitation

1School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
2Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China

Correspondence should be addressed to Xiao-Hong Long; nc.ude.tsuh@gnolhx

Received 20 October 2017; Revised 10 May 2018; Accepted 23 May 2018; Published 13 June 2018

Academic Editor: Ivo Caliò

Copyright © 2018 Xiao-Hong Long et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the process of collapse failure of the space steel frame subjected to earthquake excitation, complex behaviors often are involved, including geometric nonlinearity, material nonlinearity, fracture, contact, and collisions. In view of the unique advantages of the finite particle method to analyze complex structural nonlinear problems, this paper utilized the finite particle method as the basic means of analysis and used MATLAB software for computational analysis. This paper first derived a finite particle method-based space steel frame model, conducted static analysis and dynamic response analysis under earthquake excitation, and compared findings with ANSYS analysis results to validate reliability. This paper established the fracture criterion and failure mode of a steel frame member. Theoretical derivation and numerical simulation indicate that the finite particle method is a feasible and effective way to simulate the collapse of space steel frame structures subjected to earthquake excitation. This method provides a new approach to study the collapse and anticollapse seismic design of space steel frame structures subjected to earthquake excitation.