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June 11-12, 2014

Cornell University Campus
Ithaca, NY, USA



High energy x-ray diffraction (HEXD) experiments coupled with micromechanical material models have the potential to enable unprecedented gains in our understanding of deformation processes in engineering materials. On June 11 and 12, a two day school is being offered at the Cornell High Energy Synchrotron Source (CHEo introduce users to FEpX, a finite element–based modeling program developed at Cornell that simulates the elastic-plastic behavior of polycrystalline aggregates. In the school, attendees will learn the basics needed to: construct a polycrystalline mesh, set the boundary conditions and input the initial state and material constants, run an elastic-plastic simulation and post-process the results. The skills learned in the school will enable simulation of various aspects of HEXD / in-situ loading experiments like those conducted at the CHESS high energy stations A2 and F2.

Similar to the need for a synchrotron to produce the x rays necessary to fully interrogate metallic polycrystals, FEpX is capable of running “big jobs” when run in parallel on a large number of processors. Students will learn to run FEpX in parallel on the CHESS cluster and will retain access for a short amount of time after the school to run additional simulations of their own. Each student should bring a laptop to use during the school and will leave with the software and skills necessary to login to the CHESS cluster and run jobs remotely.

stress specimen