Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Structural Layout Optimization Strategy Considering Assemblage

조립성을 고려한 위상 최적설계법 개발

  • 최국진 (서울대학교 멀티스케일 설계 연구단) ;
  • 김명진 (서울대학교 멀티스케일 설계 연구단) ;
  • 김윤영 (서울대학교 멀티스케일 설계 연구단) ;
  • 장강원 (군산대학교 기계공학부)
  • Published : 2006.05.01
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Abstract

In the ground-structure-based topology optimization, beam elements are regarded to be rigidly connected to each other, and joints are assumed to have infinite stiffness. Thus the optimized topology of a structure is obtained according to the assumption of no joint effect, and the resulting structure should be manufactured in one piece if the joint effect is to be excluded as much as possible. The underlying problems are that 1) the performance of the structure might be seriously decreased if the members of the structure are connected through welding or bolting, not manufactured in one piece, and 2) the topology of the structure will be changed if the joint effect is taken into account. In the paper, the assemblage issue is considered on topology optimization, and a new formulation based on the joint stiffness-varied ground beam structure is developed. Joints of a beam structure are modeled by elastic spring elements whose stiffnesses are controlled by design variables during the optimization.

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References

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