2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 1: Aifantis Intl. Symp. / Multiscale Material Mechanics
| Editors: | Kongoli F, Bordas S, Estrin Y |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 300 pages |
| ISBN: | 978-1-987820-24-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Modeling Frictional Effects in Wear of Metals Using Strain Gradient Plasticity
Babur Deliktas1; Geroge Voyiadjis2; Ismail Turtuk1;1ULUDAG UNIVERSITY, Bursa, Turkey; 2LOUISIANA STATE UNIVERSITY, Baton Rouge, United States;
Type of Paper: Regular
Id Paper: 319
Topic: 1
Abstract:
A computationally intensive multi-scale (macro, meso-and micro-mechanically) physically-based model is developed and implemented to describe physical phenomena associated with friction and wear in heterogeneous solids, particularly under high velocity impact loading conditions. Emphasis is given on the development of fundamental, thermodynamically consistent theories to describe high velocity material wear failure processes in combination with both ductile and brittle materials for wear damage related problems. The wear failure criterion is based on dissipated energies due to plastic strains at elevated temperatures. Frictional coefficients can be identified for the contact surfaces based on temperature, strain rates and roughness of the surfaces. In addition, failure models for micro-structural effects, such as shear bands and localized deformations, are studied.
The computations are carried with Abaqus Explicit as a dynamic temperature-displacement analysis. The contact between sliding against each other surfaces is specified as surface to surface contact on the master-slave basis. The tangential behavior is defined as kinematic contact with finite sliding. The validation of computations utilizing the novel approach presented in this proposal is going to be conducted on the continuum level while comparing the obtained numerical results with the experimental results.
References:
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