Topology optimization of pressure-actuated compliant mechanisms

摘要: Topology optimization of a compliant mechanism under pressure input is presented by treating void regions with incompressible hydrostatic fluid. Since an force not imposed on one point, existing problem formulations such as attaching spring the node or constraining displacement are valid for present problem. Instead, to obtain structural stiffness mechanism, mean compliance considered. To deal incompressibility, alternative mixed displacement-pressure formulation, displacement-based nonconforming finite elements employed both two- and three-dimensional problems. The effectiveness proposed approach verified designing grippers stretchers.