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High-Speed Penetration of Concrete Using a New Analytical Model of Velocity-Dependent Friction

[+] Author Affiliations
Robert N. Davis, S. E. Jones

University of Alabama, Tuscaloosa, AL

Mary L. Hughes

Air Force Research Laboratory, Eglin AFB, FL

Paper No. PVP2003-1823, pp. 111-116; 6 pages
  • ASME 2003 Pressure Vessels and Piping Conference
  • Problems Involving Thermal Hydraulics, Liquid Sloshing, and Extreme Loads on Structures
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-1695-8
  • Copyright © 2003 by ASME


In this paper, a completely analytical formulation of velocity-dependent friction is used to eliminate the analytical complexity associated with the evaluation of velocity-dependent integrals in the penetration model presented in [5]. The simplification employed is an extension of the method used in [6], in which the velocity regime governing the coefficient of sliding friction was divided into two sectors, producing two distinct velocity-dependent friction coefficients, for low-speed and high-speed friction. In this paper, the velocity regime is divided into a number of intervals, thereby replacing the linear velocity-dependent friction relationship at low speeds with a series of steps; the method is flexible enough also to permit a nonlinear profile for low-speed sliding friction. As a byproduct of the work, a completely analytical estimate for the work done by sliding friction in the problem can be found, permitting the evaluation of projectile mass loss.

Copyright © 2003 by ASME
Topics: Friction , Concretes



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