Bio-Inspired Autonomy for Mobile Sensor Network
- Series
- GT-MAP Seminar
- Time
- Friday, November 10, 2017 - 15:00 for 2 hours
- Location
- Skiles 006
- Speaker
- Prof. Fumin Zhang – GT ECE
Please Note: This workshop is sponsored by College of Science, School of Mathematics, GT-MAP and NSF.
Please Note: Talk by Shuozhi Xu, Title: Algorithms and Implementation for the Concurrent Atomistic-Continuum Method. Abstract: Unlikemany other multiscale methods, the concurrent atomistic-continuum (CAC) method admits the migration of dislocations and intrinsic stacking faults through a lattice while employing an underlying interatomic potential as the only constitutive relation. Here, we build algorithms and develop a new CAC code which runs in parallel using MPI with a domain decomposition algorithm. New features of the code include, but are not limited to: (i) both dynamic and quasistatic CAC simulations are available, (ii) mesh refinement schemes for both dynamic fracture and curved dislocation migration are implemented, and (iii) integration points in individual finite elements are shared among multiple processors to minimize the amount of data communication. The CAC program is then employed to study a series of metal plasticity problems in which both dislocation core effects at the nanoscale and the long range stress field of dislocations at the submicron scales are preserved. Applications using the new code include dislocation multiplication from Frank-Read sources, dislocation/void interactions, and dislocation/grain boundary interactions.