Structural Topology Optimization using Element Remove Method

요소제거법을 이용한 구조물 위상최적설계

  • 임오강 (부산대학교 기계설계공학과) ;
  • 이진식 (경기공업대학 컴퓨터응용설계계열) ;
  • 김창식 (부산대학교 기계설계공학과 대학원)
  • Published : 2001.10.01

Abstract

Topology optimization. has been evolved into a very efficient conceptual design tool and has been utilized into design engineering processes in many industrial parts. In recent years, topology optimization has become the focus of structural optimization design and has been researched and widely applied both in academy and industry. Traditional topology optimization has been using homogenization method and optimality criteria method. Homogenization method provides relationship equation between structure which includes many holes and stiffness matrix in FEM. Optimality criteria method is used to update design variables while maintaining that volume fraction is uniform. Traditional topology optimization has advantage of good convergence but has disadvantage of too much convergency time and additive checkerboard prevention algorithm is needed. In one way to solve this problem, element remove method is presented. Then, it is applied to many examples. From the results, it is verified that the time of convergence is very improved and optimal designed results is obtained very similar to the results of traditional topology using 8 nodes per element.

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