Lightweight Crane Design by Using Topology and Shape Optimization

위상최적설계와 형상최적설계를 이용한 크레인의 경량설계

  • Kim, Young-Chul (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.) ;
  • Hong, Jung-Kie (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.) ;
  • Jang, Gang-Won (Faculty of Mechanical and Aerospace Engineering, Sejong Univ.)
  • 김영철 (군산대학교 기계자동차공학부) ;
  • 홍정기 (군산대학교 기계자동차공학부) ;
  • 장강원 (세종대학교 기계항공우주공학부)
  • Received : 2010.12.29
  • Accepted : 2011.04.20
  • Published : 2011.07.01


CAE-based structural optimization techniques are applied for the design of a lightweight crane. The boom of the crane is designed by shape optimization with the shape of the cross section of the boom as the design variable. The design objective is mass minimization, and the static strength and dynamic stiffness of the system are set as the design constraints. Hyperworks, a commercial analysis and optimization software, is used for shape and topology optimization. In order to consistently change the shape of the elements of the boom with respect to the change in the shape of its cross section, the morphing function in Hyperworks is used. The support of the boom of the original model is simplified to model the design domain for topology optimization, which is discretized by using three-dimensional solid elements. The final result after shape and topology optimization is 19% and 17% reduction in the masses of the boom and support, respectively, without a deterioration in the system stiffness.


Topology Optimization;Shape Optimization;Crane;Morphing


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