Stress uniform distribution design of curved beam arm linear flexure bearings

被引：0

作者：

Li J. ^{[1
,2
]}

Xun Y. ^{[1
]}

Quan J. ^{[1
]}

Hong G. ^{[1
,2
]}

机构：

[1] Key Laboratory of Technology on Space Energy Conversion, Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing

[2] University of Chinese Academy of Sciences, Beijing

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2021年 / 49卷 / 08期

关键词：

Curved beam; Equivalent force and its action point; Extended fixing structure; Flexure bearing; Iterative design method;

D O I：

10.13245/j.hust.210804

中图分类号：

学科分类号：

摘要：

In order to solve the problems of uneven stress distribution and to make full use of the room left for travel optimization of curved beam arm linear flexure bearings (eccentric involute spiral arm linear flexure bearing spring with extended fixing structure of spring arm root), the iterative design method of the spring arm shape made the stress of the spring arm uniform and minimum. Compared with the flexure bearing designed by the advanced shape factor method, the allowable stroke of the flexure bearing designed by the iterative arm shape design method can be increased by 17.2% in the case of little change in axial and radial stiffness. The equivalent force action point of spring arm was applied in design for the first time, and the maximum von Mises stress expression of each arm section was derived for the first time. Both were applied into the iterative design process of arm width distribution. Through finite element simulation, it is proved that the stress of the spring designed by the arm shape iteration method is uniformly distributed along the spring arm, and the maximum von Mises stress of each section of the spring arm floats less than 3% compared with design stress. © 2021, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：20 / 26

页数：6

共 12 条

[1] 2, pp. 1-6
[2] 1, pp. 79-85
[3] 1, pp. 5-8
[4] 6, pp. 8-11
[5] CHEN N, CHEN X, WU Y N, Et al., Spiral profile design and parameter analysis of flexure spring[J], Cryogenics, 46, 6, pp. 409-419, (2006)
[6] ZHOU W, WANG L, GAN Z, Et al., The performance comparison of Oxford and triangle flexure bearings[J], AIP Conference Proceedings, 1434, 1, pp. 1149-1156, (2012)
[7] AMOEDO S, THEBAUD E, GSCHWENDTNER M, Et al., Novel parameter-based flexure bearing design method, Cryogenics, 76, pp. 1-9, (2016)
[8] MEYMIAN N Z, CLARK N N, MUSHO T, Et al., An optimization method for flexural bearing design for high-stroke high-frequency applications, Cryogenics, 95, pp. 82-94, (2018)
[9] RAJENDRA P, DAMU C, ACHNUR M., Shape factor optimization and parametric analysis of spiral arm flexure bearing through finite element analysis studies, International Journal of Engineering Research & Technology, 3, 4, pp. 585-588, (2014)
[10] SHINDE S M, LEKURWALE R R., Parametric mathematical modelling and aspect ratio optimization of eccentric spiral profile flexural bearing through finite element analysis studies, Proc of International Conference on Advances in Thermal Systems, Materials and Design Engineering, pp. 1-5, (2017)

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