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 a Compliant Gripper With Multimode Jaws
TL;DR: This paper presents the design of a multi-mode compliant gripper, using the singularities of the four-bar mechanism with equilateral links, and the kinetostatic modelling of the resulting compliant grippers, including the comparison of the results obtained from analytical modelling, finite element analysis and experimental testing.
Journal ArticleDOI
Explicit structural topology optimization using moving wide Bezier components with constrained ends
TL;DR: This paper presents a structural topology optimization method using moving wide Bezier components with constrained ends which can essentially avoid any structurally invalid designs and thereby smooth the optimization process.
Journal ArticleDOI
A multi-response optimal design of bistable compliant mechanism using efficient approach of desirability, fuzzy logic, ANFIS and LAPO algorithm
TL;DR: A new efficient hybrid methodology for solving the multi-objective optimization design for compliant mechanisms is presented, and the results demonstrate that the proposed method is more efficient than Taguchi-based fuzzy logic.
Journal ArticleDOI
Topology optimization of compliant mechanisms using pairs of curves
Nianfeng Wang,Xianmin Zhang +1 more
TL;DR: A novel representation scheme is proposed that is characterized by pairs of curves that are used to connect Input/Ouput regions of the structure to form one single connected load-bearing structure.
Journal ArticleDOI
Bi-directional evolutionary level set method for topology optimization
TL;DR: A bi-directional evolutionary level set method for solving topology optimization problems is presented in this article and new holes can be automatically generated in the design domain during the optimization process.
References
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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.