|Student Name:||Maj. Rodolfo G. Buentello Hernandez|
|Thesis:||3D FINITE ELEMENT MODELING OF SLIDING WEAR|
|Location:||Bldg. 646, room 207|
|Date & Time:||09/12/2013 at 1300|
|Abstract:|| Currently there is a need to identify and compare materials that would endure sliding wear under severe conditions such as high velocities. The high costs associated with the field experimentation of systems subject to high-speed sliding, has prevented the collection of the data required to characterize this phenomena. Simulating wear through Finite Elements (FE) would enable its prediction under different scenarios and would reduce experimentation costs. This investigation is concerned with the finite element simulation of the mechanical high-speed sliding wear. The simulated wear patterns match the morphology of the plastic deformations observed on micrographs of a surface subjected to high-speed wear. The data from the simulations was used to appraise the strain rate and the thermal contributions to the Mises stress and to the strain at failure, under different sliding velocities and skin temperatures. The model results are extrapolated based on the surface roughness characteristics of the materials. The model is used to simulate the wear of a slipper that slid over the Holloman High-Speed Test Track (HHSTT). During this event the slipper traveled a distance of 5,816 meters in 8.14 seconds and reached a maximum velocity of 1,530 m/s.