118 幾何学的非線形性を考慮したトラスの形状・トポロジー最適化によるリンク機構の生成

抄録

A general approach is presented for generating link mechanisms from a highly connected ground structure. The structure is modeled as a pin-jointed truss, and the unnecessary members are removed by solving the optimization problem for minimizing the total structural volume under constraints on the maximum load, the displacement at the specified node, and the stiffnesses at initial and final states. The design variables are cross-sectional areas and the nodal coordinates. It is shown in the numerical examples that several mechanisms can be naturally found as a result of optimization starting from randomly selected initial solutions.