Accession Number : ADA515123


Title :   Consideration of Wear Rates at High Velocity


Descriptive Note : Doctoral thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Hale, Chad S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a515123.pdf


Report Date : Mar 2010


Pagination or Media Count : 241


Abstract : The development of the research presented here is one in which high velocity relative sliding motion between two bodies in contact has been considered. The experimental results of a VascoMax 300 maraging steel slipper sliding on an AISI 1080 steel rail during a January 2008 sled test mission were considered for the determination of high velocity wear rates. The numerical model, based on a metallographic study of a test slipper, contained all of the physical features present in order to adequately characterize high velocity wear rates. Two-dimensional, plane strain models have been implemented in the explicit finite element code, ABAQUS. Local submodel collisions between the slipper and a 6 micron radius hemispherical asperity were analyzed to determine mechanical and melt wear rates. A simplified damage criterion of maximum Mises stress was used to determine the damaged volume during the slipper and asperity collision. Overall, the model predicts a total wear volume that is approximately 36% of the total wear measured during the metallographic analysis.


Descriptors :   *WEAR , *HIGH VELOCITY , *RATES , *NUMERICAL METHODS AND PROCEDURES , SLED TESTS , FRICTION , COLLISIONS , METALLOGRAPHY , FINITE ELEMENT ANALYSIS , TWO DIMENSIONAL , MATHEMATICAL MODELS , STRESSES , CODING


Subject Categories : Properties of Metals and Alloys
      Theoretical Mathematics
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE