02.2021.36.46

ANALYSIS AND OPTIMIZATION A COMPLIANT BISTABLE MECHANISM WITH CHAINED BEAM CONSTRAIN MODEL

Author(s):

Van Duc Phan†, Ngoc Tran Le‡, Ngoc Dang Khoa Tran‡*

Affiliation(s):

†Faculty of Automobile Technology, Van Lang University, Ho Chi Minh City, Vietnam.

‡Falcuty of mechanical engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam

Corresponding Author Email: tranngocdangkhoa@iuh.edu.vn

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.