Slip inception mechanism is very important for modeling of static friction and understanding of some experimental observations of friction. In this work, slip inception was treated as a local competence of interfacial bonding failure and weaker material failure. At any contacting point, if bond shear strength is weaker than softer material shear strength, slip inception is governed by interfacial bonding failure. Otherwise, it is governed by softer material failure. Considering the possible co-existence of these two slip inception mechanisms during presliding, a hybrid static friction model for smooth dry contact was proposed, which indicates that the static friction consists of two components: one contributed by contact area where bonding failure is dominant and the other contributed by contact area where material failure is dominant. With the proposed static friction model, the effects of contact pressure, the material properties, and the contact geometry on static friction were discussed.
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December 2014
Research-Article
On Slip Inception and Static Friction for Smooth Dry Contact
Xi Shi
Xi Shi
1
School of Mechanical Engineering,
e-mail: xishi@sjtu.edu.cn
Shanghai Jiao Tong University
,Shanghai 200240
, China
e-mail: xishi@sjtu.edu.cn
1Corresponding author.
Search for other works by this author on:
Xi Shi
School of Mechanical Engineering,
e-mail: xishi@sjtu.edu.cn
Shanghai Jiao Tong University
,Shanghai 200240
, China
e-mail: xishi@sjtu.edu.cn
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received July 14, 2014; final manuscript received October 5, 2014; accepted manuscript posted October 10, 2014; published online October 23, 2014. Editor: Yonggang Huang.
J. Appl. Mech. Dec 2014, 81(12): 121005 (7 pages)
Published Online: October 23, 2014
Article history
Received:
July 14, 2014
Revision Received:
October 5, 2014
Accepted:
October 10, 2014
Citation
Shi, X. (October 23, 2014). "On Slip Inception and Static Friction for Smooth Dry Contact." ASME. J. Appl. Mech. December 2014; 81(12): 121005. https://doi.org/10.1115/1.4028753
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