Movie of Million Block Model of Cavern Response to High Frequency Excitation   Charles Dowding Professor of Civil Engineering, O. Dmytryshyn Post Doctoral Fellow of Civil Engineering, and T.B. Belytschko Professor of Mechanical Engineering Northwestern University, Evanston, Illinois, USA
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ABSTRACT

This paper generalizes the modification of an explicitly computed discrete element code for parallel operation NURBM3D to leverage the experience for similar modification of other such codes. After modification, the code is now capable of analyzing 2,000,000 elements for time varying loading. Modifications included the initial optimization of the primary computational algorithm for serial computation, as well as subsequent modification for SIMD (single instruction multiple data stream) and MIMD (multiple instruction, multiple data stream) parallel computers. Comparative observations are made for pre and post processing issues.

KEYWORDS: DEM, movie, cavern, earthquake

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