Fully-compliant statically-balanced mechanisms without prestressing assembly: concepts and case studies
-
Published:2011-08-16
Issue:2
Volume:2
Page:169-174
-
ISSN:2191-916X
-
Container-title:Mechanical Sciences
-
language:en
-
Short-container-title:Mech. Sci.
Abstract
Abstract. The purpose of this paper is to present new concepts for designing fully-compliant statically-balanced mechanisms without prestressing assembly. A statically-balanced compliant mechanism can ideally provide zero stiffness and energy free motion like a traditional rigid-body mechanism. These characteristics are important in design of compliant mechanisms where low actuation force, accurate force transmission or high-fidelity force feedback are primary concerns. Typically, static balancing of compliant mechanisms has been achieved by means of prestressing assembly. However, this can often lead to creep and stress relaxation arising in the flexible members. In this paper two concepts are presented which eliminate the need for prestressing assembly of compliant mechanisms: (1) a weight compensator which employs a constant-force compliant mechanism, (2) a near-zero-stiffness mechanism which combines two multistable mechanisms. In addition to the advantages provided by statically-balanced compliant mechanisms, two other notable features of these statically-balanced mechanisms are their ability to be monolithically fabricated and to return to their as-fabricated position without any disassembly when not in use.
Publisher
Copernicus GmbH
Subject
Industrial and Manufacturing Engineering,Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering,Control and Systems Engineering
Reference26 articles.
1. Chen, G., Wilcox, D. L., and Howell, L. L.: Fully compliant double tensural tristable micromechanisms (DTTM), J. Micromech. Microeng., 19, 025011, 1–8, 2009a. 2. Chen, G., Aten, Q. T., Zirbel, S., Jensen, B. D., and Howell, L. L.: A tristable mechanism configuration employing orthogonal compliant mechanisms, Trans. ASME, J. Mechan. Robot., 2, 014501, 1–6, 2009b. 3. Chen, G., Gou, Y., and Yang, L.: Research on Multistable Compliant Mechanisms: The State of the Art, Proceedings of the 9th International Conference on Frontiers of Design and Manufacturing (ICFDM 2010), 17–19 July 2010, Changsha, China, 1–5, 2010. 4. Chen, G., Xiong, B., and Huang, X.: Finding the optimal characteristic parameters for 3R pseudo-rigid-body model using an improved particle swarm optimizer, Precis. Eng., 35(3), 505–511, 2011a. 5. Chen, G., Gou, Y., and Zhang, A.: Synthesis of compliant multistable mechanisms through use of a single bistable mechanism, Trans. ASME J. Mechan. Design, 133(8), 081007, https://doi.org/10.1115/1.4004543, 2011b.
Cited by
48 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|