A mechanical interface behaves as the stiffness and damping when the interface is bearing a static normal force and a sine normal exciting force. For the interfacial normal damping, a calculating model was proposed. This proposed model studied the lateral contact (shoulder–shoulder contact) between upper and lower asperities in the elastic and elastic-perfectly plastic stages, which is neglected by other classical models. The normal force can be divided into a normal component and a tangential component when two asperities are contacting in dislocation. The relation between the loading–unloading normal component forces and deformation can be calculated, and then the strain energy dissipation between asperities can be gotten by integral. The friction energy dissipation also can be calculated based on the relation between loading–unloading tangential component forces and the slippage. Furthermore, the total interfacial energy dissipation can be obtained according to the statistical theory. Finally, the equivalent viscous damping is estimated using the vibration theory. The proposed model and classical models are compared by simulation and experiment, and it was found that the interfacial damping of the proposed model is more than the damping of the classical models. Moreover, the proposed model is consistent with the experimental results.
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March 2018
Research-Article
Normal Damping Model of Mechanical Joints Interfaces Considering Asperities in Lateral Contact
Zhiqiang Gao,
Zhiqiang Gao
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: gaozhiqiangjk@163.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: gaozhiqiangjk@163.com
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Weiping Fu,
Weiping Fu
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: weipingf@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: weipingf@xaut.edu.cn
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Wen Wang,
Wen Wang
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: wangwen@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: wangwen@xaut.edu.cn
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Leiting Lou,
Leiting Lou
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 434529327@qq.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 434529327@qq.com
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Jiebei Wu
Jiebei Wu
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 377708255@qq.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 377708255@qq.com
Search for other works by this author on:
Zhiqiang Gao
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: gaozhiqiangjk@163.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: gaozhiqiangjk@163.com
Weiping Fu
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: weipingf@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: weipingf@xaut.edu.cn
Wen Wang
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: wangwen@xaut.edu.cn
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: wangwen@xaut.edu.cn
Leiting Lou
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 434529327@qq.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 434529327@qq.com
Jiebei Wu
School of Mechanical and Precision
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 377708255@qq.com
Instrument Engineering,
Xi'an University of Technology,
Xi'an 710048, Shaanxi, China
e-mail: 377708255@qq.com
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received November 21, 2016; final manuscript received September 2, 2017; published online October 9, 2017. Assoc. Editor: Stephen Boedo.
J. Tribol. Mar 2018, 140(2): 021404 (12 pages)
Published Online: October 9, 2017
Article history
Received:
November 21, 2016
Revised:
September 2, 2017
Citation
Gao, Z., Fu, W., Wang, W., Lou, L., and Wu, J. (October 9, 2017). "Normal Damping Model of Mechanical Joints Interfaces Considering Asperities in Lateral Contact." ASME. J. Tribol. March 2018; 140(2): 021404. https://doi.org/10.1115/1.4037954
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