Abstract
In shipyard, special equipment named lugs are used for erecting a block with a crane. According to the lug positions, there can be the dynamic instability on the block. For solving this, a method for the lug arrangement design is proposed based on the optimization technique and the static and dynamic analyses in this study. After finding an optimal lug positions for the lug arrangement based on the static analysis, the safety of the optimal solution is also evaluated through the dynamic analysis. To check the applicability of the proposed method, it is applied to an example problem of lug arrangement design.