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
Bionic design of a curvature-adjustable flexure hinge inspired by red blood cells
TL;DR: In this paper , a new notch flexure hinge with adjustable curvatures inspired by the biconcave disk morphology of red blood cells was proposed, and closed-form equations of compliance, precision and maximum stress were derived based on Castigliano's second theorem and Timoshenko beam theory.
Book ChapterDOI
A Boundary Reconstruction Algorithm Used in Compliant Mechanism Topology Optimization Design
TL;DR: A boundary reconstruction algorithm for the compliant mechanism topology optimization design is proposed which is composed of contraction of gray units, search and move of boundary units and smoothness of the boundary.
Proceedings ArticleDOI
Multi-material topology optimization of complaint mechanism using ground structure approach
Nianfeng Wang,Xianmin Zhang +1 more
TL;DR: In this paper, a new simple approach called Parallel Optimization Tactic (POT) is presented, which is a optimization method formalizing the process of propagating multi-material optimization into separate single-material optimizations.
Book ChapterDOI
Topological Design of Hinge-Free Compliant Mechanisms Using the Node Design Variables Method
TL;DR: Topology optimization of hinge-free compliant mechanisms using the node design variables method is proposed, and the method of moving asymptotes is adopted to solve the topology optimization problem.
Book ChapterDOI
Minimizing the Difference Between Two Output Performances to Avoid de Facto Hinges in Topology-Optimized Compliant Mechanisms
TL;DR: This paper presents a method for mathematically formulating the compliant mechanisms topology optimization problem aimed at automatically eliminating the de facto hinges by using the weighting method.
References
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Journal ArticleDOI
Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations
Stanley Osher,James A. Sethian +1 more
TL;DR: The PSC algorithm as mentioned in this paper approximates the Hamilton-Jacobi equations with parabolic right-hand-sides by using techniques from the hyperbolic conservation laws, which can be used also for more general surface motion problems.
Journal ArticleDOI
Generating optimal topologies in structural design using a homogenization method
Martin P. Bendsøe,Noboru Kikuchi +1 more
TL;DR: In this article, the authors present a methodology for optimal shape design based on homogenization, which is related to modern production techniques and consists of computing the optimal distribution in space of an anisotropic material that is constructed by introducing an infimum of periodically distributed small holes in a given homogeneous, i.i.
Book
Level Set Methods and Dynamic Implicit Surfaces
Stanley Osher,Ronald Fedkiw +1 more
TL;DR: A student or researcher working in mathematics, computer graphics, science, or engineering interested in any dynamic moving front, which might change its topology or develop singularities, will find this book interesting and useful.
Book
Topology Optimization: Theory, Methods, and Applications
Martin P. Bendsøe,Ole Sigmund +1 more
TL;DR: In this article, the authors proposed a topology optimization by distribution of isotropic material for truss structures with anisotropic materials, based on the topology design of truss structure.
Journal ArticleDOI
A level set approach for computing solutions to incompressible two-phase flow
TL;DR: A level set method for capturing the interface between two fluids is combined with a variable density projection method to allow for computation of two-phase flow where the interface can merge/break and the flow can have a high Reynolds number.