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Heuristic Gradient Projection for 3D Space Frame Optimization

[+] Author Affiliations
Maged R. Abd El Malek

MCV Company, Cairo, Egypt

Mohamed S. Senousy, Sayed M. Metwalli

Cairo University, Cairo, Egypt

Hesham A. Hegazi

American University in Cairo, Cairo, Egypt

Paper No. DETC2005-85348, pp. 337-344; 8 pages
doi:10.1115/DETC2005-85348
From:
  • ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 31st Design Automation Conference, Parts A and B
  • Long Beach, California, USA, September 24–28, 2005
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4739-X | eISBN: 0-7918-3766-1
  • Copyright © 2005 by ASME

abstract

The purpose of this work is to develop a novel optimization process for the design of space frames. The main objective is to minimize the space frame volume and consider stress constraints satisfaction. A finite element program is devised to synthesize 3D-space frames and aid in its topology optimization. The program is verified through different elementary problems with known analytical solutions as well as with commercial packages. A Midi-Bus frame is modeled with about 300 members and analyzed for a severe road model condition. The optimization effectively uses the devised Heuristic Gradient Projection (HGP) technique to synthesize the optimum Midi-Bus frame. Results indicate a marked improvement over available designs and remarkably faster convergence over other optimization techniques. This technique can thus be effectively applied to other large 3D space frame synthesis and optimization.

Copyright © 2005 by ASME

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