Topological synthesis of fluidic pressure-actuated robust compliant mechanisms

This paper presents a robust density-based topology optimization approach for synthesizing pressure-actuated compliant mechanisms. To ensure functionality under manufacturing inaccuracies, the or three-field formulation is employed, involving dilated, intermediate and eroded realizations of design. Darcy's law in conjunction with conceptualized drainage term used to model pressure load as function design vector. The consistent nodal loads are evaluated from obtained field using standard finite element method. objective sensitivities adjoint-variable approach. A multi-criteria both stiffness flexibility mechanism employed formulation, min-max problems solved obtain inverter, gripper, contractor mechanisms different minimum feature sizes. Limitations linear elasticity assumptions while designing identified high loads. Challenges involved deformable presented.