Topology Optimization of Passive Shock Isolator Considering Prescribed Load-Displacement Functions

This paper describes the use of topology optimization as a tool for the design of shock isolator, which is based on cone-type disc spring for prescribed load-displacement functions. The objective function evaluates load-displacement relationship based on the prescribed softening load-displacement function, which improve shock isolation capability. The geometrically nonlinear behavior of the shock isolator is modeled using total Lagrangian finite element formulation. The resulting nonlinear system is solved using a NewtonRaphson iterative scheme. The sensitivity in topology optimization, adjoint variable method is employed. Several examples are presented to demonstrate the capability and effectiveness of the proposed method.