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Structural and Multidisciplinary Optimization

, Volume 50, Issue 4, pp 561–571 | Cite as

Structural topology optimization with constraints on multi-fastener joint loads

  • Ji-Hong Zhu
  • Jie Hou
  • Wei-Hong Zhang
  • Yu Li
RESEARCH PAPER

Abstract

This paper addresses an important problem of design constraints on fastener joint loads that are well recognized in the design of assembled aircraft structures. To avoid the failure of fastener joints, standard topology optimization is extended not only to minimize the structural compliance but also to control shear loads intensities over fasteners. It is shown that the underlying design scheme is to ameliorate the stiffness distribution over the structure in accordance with the control of load distributions over fastener joints. Typical examples are studied by means of topology optimization with joint load constraints and the standard compliance design. The effects of joint load constraints are highlighted by comparing numerical optimization results obtained by both methods. Meanwhile, resin models of optimized designs are fabricated by rapid prototyping process for loading test experiments to make sure the effectiveness of the proposed method.

Keywords

Topology optimization Multi-fastener joint Joint load constraint Loading test Rapid prototyping 

Notes

Acknowledgments

The authors would like to thank Prof Wang Boping from the University of Texas at Arlington and Dr Yang Jun from Chengdu Aircraft Design Institute of AVIC for the valuable discussions.

This work is supported by National Natural Science Foundation of China (51275424, 11002113 and 11172236), 973 Program (2011CB610304), NPU Foundation for Fundamental Research (NPU-FFR-JC20120229), and the 111 Project(B07050).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Engineering Simulation & Aerospace Computing, The Key Laboratory of Contemporary Design and Integrated Manufacturing TechnologyNorthwestern Polytechnical UniversityXi’anChina

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