Design and analyze of flexure hinges based on triply periodic minimal surface lattice |
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| Affiliation: | 1. School of Automotive Studies, Tongji University, Shanghai, China;2. Centre for Innovative Structures and Materials, School of Engineering, RMIT University, GPO Box 2476, Melbourne 3001, Australia;3. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006, Australia;4. College of Transportation Engineering, Tongji University, Shanghai, China;1. Department of Mechatronic Engineering, College of Engineering, Shantou University, Shantou 515063, China;2. Key Laboratory of Intelligent Manufacturing(Shantou University), Ministry of Education, Shantou 515063, China;3. Shantou Polytechnic, Shantou 515078, China;4. Shantou Ray-Bonus Additive Manufacture Research Institute, Shantou 515063, China;1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China;2. Department of Mechanical Engineering, Lassonde School of Engineering, York University, 4700 Keele Street, Toronto ON M3J 1P3, Canada |
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| Abstract: | The triply periodic minimal surface lattice structure is innovatively introduced into the design of flexure hinges in this paper. Four types of triply periodic minimal surface lattices are generated by approximate mathematical expressions. The compliance characteristics of these four lattices are simulated by finite element analysis (FEA), and it is found that the primitive lattice (P-lattice) is the most suitable lattice for flexure hinges. Simplified model of single P-lattice and one-dimensional parallel structure composed of several P-lattices are proposed. Finally, the P-lattice is integrated into the beam portion of flexure hinges by Boolean operation, and this new type of flexure hinge is additively manufactured. The FEA and experimental results show that the compliance and compliance ratio of this new type of leaf flexure hinges are greatly improved. |
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| Keywords: | Triply periodic minimal surface Flexure hinge Simplified model Boolean operation Additive manufacturing |
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