Finite Particle Method for Progressive Failure Simulation of Truss Structures

A structural analysis framework called the finite particle method (FPM) for structure failure simulation is presented in this paper. The traditional finite-element method is generated from continuum mechanics and the variational principle; vector mechanics form the basis of FPM. It discretizes the domain with finite particles whose motions are described by Newton’s second law. Instead of imposing a global equilibrium of the entire continuous system, FPM enforces equilibrium on each particle. Thus, particles are free to separate from one another, which is advantageous in the simulation of structural failure. One of the features of this approach is that no iterations to follow nonlinear laws are necessary, and no global matrices are formed or solved in this method. A convected material frame is used to evaluate the structure deformation and internal force. The explicit time integration is adopted to solve the equation of motion. To simulate the truss structure failure, a failure criterion on the basis of the ideal plastic constitutive model and a failure modeling algorithm are proposed by using FPM. According to the energy conservation study of a two-dimensional truss, the energy is decomposed and balanced during the failure process. Also, a more complicated three-dimensional structure failure simulation is given. The comparison of the simulation results and the practical failure mode shows the capability of this method.

• Record URL:
  https://doi.org/10.1061/(ASCE)ST.1943-541X.0000321
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Supplemental Notes:
  • Copyright © 2011 American Society of Civil Engineers
• Authors:
  • Yu, Ying
  • Paulino, Glaucio H
  • Luo, Yaozhi
• Publication Date: 2011-10-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: pp 1168-1181
• Serial:
  • Journal of Structural Engineering
  • Volume: 137
  • Issue Number: 10
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Collapse; Energy conservation; Failure analysis; Finite element method; Simulation; Structural analysis; Truss bridges; Trusses
• Uncontrolled Terms: Finite particle method; Progressive collapse
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01357174
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Nov 2 2011 3:14PM