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Crashworthiness simulations with DYNA3D
| 题名： | Crashworthiness simulations with DYNA3D |
| 作者： | De Groot, A.J.;Lee, A.S.;Kay, G.J.;Hoover, C.G.;Schauer, D.A.; |
| 关键词： | 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ;57 HEALTH AND SAFETY ; VEHICLES; MOTOR VEHICLE ACCIDENTS; COMPUTERIZED SIMULATION; ALGORITHMS; PARALLEL PROCESSING; D CODES; BOUNDARY CONDITIONS; IMPACT SHOCK; THREE-DIMENSIONAL CALCULATIONS; PARTITION FUNCTIONS |
| 摘要： | Current progress in parallel algorithm research and applications in vehicle crash simulation is described for the explicit, finite element algorithms in DYNA3D. Problem partitioning methods and parallel algorithms for contact at material interfaces are the two challenging algorithm research problems that are addressed. Two prototype parallel contact algorithms have been developed for treating the cases of local and arbitrary contact. Demonstration problems for local contact are crashworthiness simulations with 222 locally defined contact surfaces and a vehicle/barrier collision modeled with arbitrary contact. A simulation of crash tests conducted for a vehicle impacting a U-channel small sign post embedded in soil has been run on both the serial and parallel versions of DYNA3D. A significant reduction in computational time has been observed when running these problems on the parallel version. However, to achieve maximum efficiency, complex problems must be appropriately partitioned, especially when contact dominates the computation. |
| 总页数： | 22p |
| 报告类型： | 科技报告 |
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