Three-dimensional (3D) wear of the clearance spherical joint in four-degrees-of-freedom (DOF) parallel mechanism is predicted based on Archard's wear model. The flexible moving platform is treated as thin plate element based on absolute nodal coordinate formulation (ANCF). The tangent frame is introduced to formulate the constraint equation of universal joint. One of the spherical joints is treated as clearance joint. The normal and tangential contact forces are calculated based on Flores contact force model and modified Coulomb friction model. In order to predict 3D wear, the normal contact force, tangential contact velocity, and eccentricity vector are decomposed in the global coordinate system. Simulation results show that 3D wear occurred in three directions are not uniform each other.
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Three-Dimensional Wear Prediction of Four-Degrees-of-Freedom Parallel Mechanism With Clearance Spherical Joint and Flexible Moving Platform
Gengxiang Wang,
Gengxiang Wang
Faculty of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373,
Xi'an 710048, Shaanxi, China
e-mail: wanggengxiang@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373,
Xi'an 710048, Shaanxi, China
e-mail: wanggengxiang@xaut.edu.cn
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Hongzhao Liu
Hongzhao Liu
Faculty of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: liu-hongzhao@163.com
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373
,Xi'an 710048, Shaanxi, China
e-mail: liu-hongzhao@163.com
Search for other works by this author on:
Gengxiang Wang
Faculty of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373,
Xi'an 710048, Shaanxi, China
e-mail: wanggengxiang@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373,
Xi'an 710048, Shaanxi, China
e-mail: wanggengxiang@xaut.edu.cn
Hongzhao Liu
Faculty of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: liu-hongzhao@163.com
Instrument Engineering,
Xi'an University of Technology,
P.O. Box 373
,Xi'an 710048, Shaanxi, China
e-mail: liu-hongzhao@163.com
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received August 15, 2017; final manuscript received December 18, 2017; published online January 29, 2018. Assoc. Editor: Wang-Long Li.
J. Tribol. May 2018, 140(3): 031611 (14 pages)
Published Online: January 29, 2018
Article history
Received:
August 15, 2017
Revised:
December 18, 2017
Citation
Wang, G., and Liu, H. (January 29, 2018). "Three-Dimensional Wear Prediction of Four-Degrees-of-Freedom Parallel Mechanism With Clearance Spherical Joint and Flexible Moving Platform." ASME. J. Tribol. May 2018; 140(3): 031611. https://doi.org/10.1115/1.4038806
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