This paper presents a novel method for the topological synthesis of flexure-based compliant mechanisms. Such kind of mechanisms are usually obtained by replacing the kinematic pairs of existing rigid-body mechanisms with flexure hinges, which is often regarded as the rigid-body replacement approach. This approach uses the topologies from rigid-body mechanism and pays little attention to the selection of the optimal topology among them. The proposed method tries to find out the optimal topology directly from design problem, without referencing to the existing rigid-body mechanisms. The topology of the flexure-based compliant mechanisms is represented by the pseudo-rigid-body model (PRBM). The PRBM is expressed in a ground structure using an adjacency matrix. An analysis method based on the principle of minimum potential energy is introduced to evaluate the static performance of the PRBM candidates quantitatively. Using genetic algorithm (GA), the optimal PRBM can be found out according to the objective function that is based on the analysis results. The validity of the proposed method is tested on a single-input-output compliant mechanism design problem.
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ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 17–20, 2014
Buffalo, New York, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4636-0
PROCEEDINGS PAPER
Design of Compliant Mechanisms Using a Pseudo-Rigid-Body Model Based Topology Optimization Method
Mohui Jin,
Mohui Jin
South China University of Technology, Guangzhou, China
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Xianmin Zhang,
Xianmin Zhang
South China University of Technology, Guangzhou, China
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Benliang Zhu
Benliang Zhu
South China University of Technology, Guangzhou, China
Search for other works by this author on:
Mohui Jin
South China University of Technology, Guangzhou, China
Xianmin Zhang
South China University of Technology, Guangzhou, China
Benliang Zhu
South China University of Technology, Guangzhou, China
Paper No:
DETC2014-34325, V05AT08A030; 8 pages
Published Online:
January 13, 2015
Citation
Jin, M, Zhang, X, & Zhu, B. "Design of Compliant Mechanisms Using a Pseudo-Rigid-Body Model Based Topology Optimization Method." Proceedings of the ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 5A: 38th Mechanisms and Robotics Conference. Buffalo, New York, USA. August 17–20, 2014. V05AT08A030. ASME. https://doi.org/10.1115/DETC2014-34325
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