A neo-Hookean half-space, in equilibrium under uniform Cauchy stress, undergoes contact by a sliding rigid ellipsoid or a rolling rigid sphere. Sliding is resisted by friction, and sliding or rolling speed is subcritical. It is assumed that a dynamic steady state is achieved and that deformation induced by contact is infinitesimal. Transform methods, modified by introduction of quasi-polar coordinates, are used to obtain classical singular integral equations for this deformation. Assumptions of specific contact zone shape are not required. Signorini conditions and the requirement that resultant compressive load is stationary with respect to contact zone stress give an equation for any contact zone span in terms of a reference value and an algebraic formula for the latter. Calculations show that prestress can significantly alter the ratio of spans parallel and normal to the direction of die travel, an effect enhanced by increasing die speed.
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March 2013
Research-Article
Rapid Contact on a Prestressed Highly Elastic Half-Space: The Sliding Ellipsoid and Rolling Sphere
L. M. Brock
L. M. Brock
Fellow ASME
Mechanical Engineering,
e-mail: brock@engr.uky.edu
Mechanical Engineering,
University of Kentucky
,Lexington, KY 40506
e-mail: brock@engr.uky.edu
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L. M. Brock
Fellow ASME
Mechanical Engineering,
e-mail: brock@engr.uky.edu
Mechanical Engineering,
University of Kentucky
,Lexington, KY 40506
e-mail: brock@engr.uky.edu
Manuscript received June 12, 2012; final manuscript received August 20, 2012; accepted manuscript posted August 27, 2012; published online January 28, 2013. Assoc. Editor: Pradeep Sharma.
J. Appl. Mech. Mar 2013, 80(2): 021023 (8 pages)
Published Online: January 28, 2013
Article history
Received:
June 12, 2012
Revision Received:
August 20, 2012
Accepted:
August 27, 2012
Citation
Brock, L. M. (January 28, 2013). "Rapid Contact on a Prestressed Highly Elastic Half-Space: The Sliding Ellipsoid and Rolling Sphere." ASME. J. Appl. Mech. March 2013; 80(2): 021023. https://doi.org/10.1115/1.4007478
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