Compliance Model and Structure Optimization Method Based on Genetic Algorithm for Flexure Hinge Based on X-Lattice Structure

Abstract

In order to obtain a new structure of beam flexure hinge with good performance, the flexure hinge based on the X-lattice structure is researched in this paper. The truss model in the finite element method is used to model the 6-DOF compliance of the flexure hinge based on the X-lattice structure. The influence of structural parameters on the compliance and compliance ratio of flexure hinges is analyzed based on this model, and the performance is compared with the traditional beam flexure hinge of the same size. In order to design a flexure hinge based on the X-lattice structure with good comprehensive performance, this paper proposes an intelligent structure optimization method based on a genetic algorithm. The feasibility of the optimization algorithm is verified by an example.

3d Printer-Driven Design of a Non-Assembly Titanium Surgical Instrument Using Compliant Lattice Flexures

“…Another way to decrease the wall stiffness is by using lattice structures, as recent studies have shown [41][42][43][44]. Advantages of lattice flexures are a reduced bending stiffness, a significantly lower mass, and good off-axis stiffness [41].…”

Design and analysis of a triangular bi-axial flexure hinge

“…Chen et al 30 created a hinge with damping layers using a strain energy approach and the Kelvin damping model, which effectively reduced vibration. Based on the X-lattice structure, Zhang et al 31 designed a new structure for the beam flexure hinge. Awtar et al 32 simplified the cantilever beam stress-strain model to facilitate the design of reed-type flexure hinges.…”