|About this Abstract
||2013 TMS Annual Meeting & Exhibition
||Modeling and Experimental Validation of Multiscale Mechanical Behavior from Atomic Scale to Macro Scale
||Improving Estimates of Fretting Wear Rates through Microscale Simulations
||Areg Hayrapetian, Michael Demkowicz
|On-Site Speaker (Planned)
We present an approach for calculating wear coefficients through simulation of wear mechanisms at the micron length-scale including asperity contact, fracture, and third-body interaction. The simulations are based on a variant of the discrete element method and yield estimates for wear coefficients that may later be used to predict the shape and depth of wear scars. We apply this method to improving estimates for nuclear fuel lifetimes under conditions that lead to grid-to-rod fretting (GTRF), which is a frequent cause of fuel failures. This project was supported by the Consortium for Advanced Simulation of Light Water Reactors (CASL): a Department of Energy (DOE) Energy Innovation Hub.