Analysis and Optimization a Compliant Bistable Mechanism with Chained Beam Constrain Model

This article presents a new novel to design a compliant bistable mechanism based on the optimization method combine with the numerical method. The chained beam constraint method (CBCM) is a powerful analysis method and predicts the bistable mechanism's nonlinear characteristics. The process discrete the beam into several small elements allow investigating the bending behavior of each element. In combination with the non dominated sorting genetic algorithm II (NSGA-II), the multi-objective optimization with the genetic algorithm is applied to design the bistable mechanism. The bistable mechanism comprises the inclined shape beam and the center mass employed to analyze and design. The difference between the numerical method and the finite element method is investigated. CBCM with many segments is examinated to predict the accuracy of the model.