Friction of Plastic Rotating Bands

Abstract

A melt concept is proposed to explain the friction and wear of unlubricated contacts subjected to high loads and sliding speed. A theory is derived to calculate the sliding force between metal rotating bands and rifling in interior ballistics. Expressions are given for film thickness, temperature, coefficient of friction, and band wear. An example is presented for copper rotating bands. The above theory is extended to pin-on-disk devices which are the primary source of friction data. Good agreement with early Franklin Institute data at high sliding speeds validated the theoretical approach. A complete review of polymer friction and the rheology of non-Newtonian polymer melt behavior is given. A limiting shear stress concept is justified for polymer and forms the basis of a non-Newtonian melt rheology model. A melt friction theory is derived for plastic rotating bands.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADA150666

Entities

People

  • A. K. Stiffler

Organizations

  • Mississippi State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Elastic Properties
  • Heat Of Fusion
  • Heat Transfer
  • Lubricants
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Polymer Degradation
  • Shear Modulus
  • Temperature Gradients
  • Thermal Conductivity
  • Thermodynamics

Readers

  • Theoretical Analysis.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).
  • ballistics.