조인트 최소거리를 고려한 다중구조물 위상최적설계 기법

초록

This paper proposes a new topology optimization scheme to determine optimized joints for multi-component models. The joints aremodeled as zero-length high-stiffness spring elements. The spring joints are considered as mesh-independent springs based on a joint-elementinterpolation scheme. This enables the changing of the location of the joints regardless of the connected nodes during optimization. Becausethe joints are movable, the locations of the optimized joints should be aggregated at several points. In this paper, the novel joint dispersal (JD)constraint to prevent joint clustering is proposed. With the joint dispersal constraint, it is possible to determine the optimized joint location aswell as optimized topologies while maintaining the minimum distance between each joint. The mechanical compliance value is considered asthe objective function. Several topology optimization examples are solved to demonstrate the effect of the joint dispersal constraint.

키워드