Analysis of Torsion Stiffness of Flexible Pivot Bearing with Radial Array Rectangular Section

Abstract:

Flexible pivot bearing, a kind of precision elastic components, can provide necessary angular displacement within limited range. The torsion stiffness of the bearing, as the most important performance specification, is studied in the paper. The analytical expression (for array number N and) of the torsion stiffness of the flexible pivot bearing with rectangular section is deduced by using static equilibrium theory. The constituent parts and physical meaning of the expression are discussed. The accuracy and applicability of the deduced expression are investigated in comparison with other equations in references. A finite element model is built accurately. Simulation of the flexible bearing (N=4) is carried out to compare the FEM solution with that obtained by the derived expression. The results show that the deduced equation is applicable to all N radial array flexible pivot bearing with rectangular section, and the difference of the stiffness value is about 7% comparing with that calculated by simulation method.

• Periodical: Key Engineering Materials (Volume 584)
• Pages: 214-219
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.584.214
• Online since: September 2013
• Authors: Chun Jie Liu, X.Q. Wu, W.M. Gan, Zhi Wei Chen
• Keywords: Analytical Calculation, Finite Element (FE) Simulation, Flexible Pivot Bearing, Radial Array Strips with Rectangular Section, Torsion Stiffness

References

[1] Liu renhuai. Design Principle of the Elastic Elements of Precision instrumentation( Jinan University Press, china 2006) (in Chinese).

[2] Liu chunjie, Wang zhengdong: Engineering Mechanics Vol. 26(2009), pp.35-38 (in Chinese).

[3] BI Shusheng: Chinese Journal of Mechanical Engineering Vol. 22(2009), pp.800-809.

[4] S.R. Park, S.H. Yang: Journal of Materials Processing Technology, Vol. 163-165(2005), pp.1585-1589.

[5] N. Lobontiu et al. Mechanism and Machine Theory Vol. 37(2002), pp.477-498.

[6] Zhao shushang: Chinese Journal of Mechanical Engineering Vol. 45(2009), pp.8-12 (in Chinese).

[7] B. P. Trease, Yong-Mo Moon：Transactions of the ASME Vol. 127(2005), pp.787-798.

[8] Xu bingye: Elastic Mechanics(Tsinghua University Press, china 2009) (in Chinese).

[9] Yin baolin: Machinery design and manufacture 2011(10), pp.13-15 (in Chinese).

[10] Wan de-an: Modern Manufacturing Engineering. Vol. 26(2005), pp.78-79(in Chinese).

[11] A. Song et al. : Measurement Vol. 40 (2007) , pp.883-891.

[12] N. Lobontiu et al.: Precision Engineering Vol. 26 ( 2002), pp.183-192.

[13] Jin Zhenlin.: Sensors and Actuators A Vol. 109 (2003), pp.17-20.