Journal ArticleDOI
Topology optimization of hinge-free compliant mechanisms with multiple outputs using level set method
TLDR
In this paper, a method for topology optimization of hinge-free compliant mechanisms with multiple outputs using level set method is presented, where two types of mean compliances are introduced and built in the proposed multi-objective function.Abstract:
A method for topology optimization of hinge-free compliant mechanisms with multiple outputs using level set method is presented in this paper. The focus of this paper is on how to prevent generating the flexible hinges during the process of topology optimization of compliant mechanisms. In the proposed method, two types of mean compliances are introduced and built in the proposed multi-objective function for topology optimization of hinge-free compliant mechanisms with multiple outputs, therefore, the spring model widely used for topology optimization of compliant mechanisms is no longer needed. Some numerical examples are presented to illustrate the validity of the proposed method.read more
Citations
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Journal ArticleDOI
Design of compliant mechanisms using continuum topology optimization: A review
TL;DR: A survey of the state-of-the-art design advances in this research area over the past 20 years is presented and can be helpful to those engaged in the topology optimization of compliant mechanisms who desire to be apprised of the field’s recent state and research tendency.
Journal ArticleDOI
Topology optimization of compliant mechanisms with desired structural stiffness
TL;DR: In this paper, a bi-directional evolutionary structural optimization (BESO) method was developed for the topological design of compliant mechanisms, where the design problem was reformulated as maximizing the flexibility of the compliant mechanism subject to the mean compliance and volume constraints.
Journal ArticleDOI
Design of single-axis flexure hinges using continuum topology optimization method
TL;DR: In this article, a method for designing the single-axis flexure hinges in the topology level is presented, where two kinds of hinges, the translational hinge and the revolute hinge, are studied.
Journal ArticleDOI
Design and static testing of a compact distributed-compliance gripper based on flexure motion
Guangbo Hao,Ronan Brendan Hand +1 more
TL;DR: In this article, a compliant gripper is obtained from a 2-PRRP (P: prismatic; R: revolute) kinematic mechanism, and uses distributed-compliance joints for avoiding stress-concentration and enabling large range of motion.
Journal ArticleDOI
A multi-objective method of hinge-free compliant mechanism optimization
TL;DR: In this article, a new multi-objective formulation for topology synthesis of hinge-free compliant mechanisms is presented based on the SIMP method and a weighted sum formed objective function is developed by taking into consideration the input and output mean compliances.
References
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Journal ArticleDOI
A Three Degree-of-Freedom Model for Self-Retracting Fully Compliant Bistable Micromechanisms
TL;DR: In this paper, a 3DOF pseudo-rigid-body model (PRBM) was used in the design of a new class of self-retracting fully compliant bistable micro-mechanism (SRFBM).
Journal ArticleDOI
Level set based multi-scale methods for large deformation contact problems
Rolf Krause,Christina Mohr +1 more
TL;DR: This work considers the numerical simulation of contact problems in elasticity with large deformations by means of a signed distance function to the obstacle's boundary and uses a non-smooth multigrid method as interior solver to solve the problem.
Journal ArticleDOI
A note on hinge‐free topology design using the special triangulation of design elements
TL;DR: In this article, a macro-design element method was proposed to avoid hinge formation and to represent curved boundary lines better, which subdivides the design element into eight triangular finite elements.