Accession Number : ADA556755


Title :   A GPU Parallelization of the Absolute Nodal Coordinate Formulation for Applications in Flexible Multibody Dynamics


Descriptive Note : Conference paper preprint


Corporate Author : ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI


Personal Author(s) : Negrut, Dan ; Leatherwood, Mike ; Jayakumar, Paramsothy ; Khude, Naresh ; Melanz, Daniel


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a556755.pdf


Report Date : 17 Feb 2012


Pagination or Media Count : 9


Abstract : The Absolute Nodal Coordinate Formulation (ANCF) has been widely used to carry out the dynamics analysis of flexible bodies that undergo large rotation and large deformation. This formulation is consistent with the nonlinear theory of continuum mechanics and is computationally more efficient compared to other nonlinear finite element formulations. Kinematic constraints that represent mechanical joints and specified motion trajectories can be introduced to make complex flexible mechanisms. As the complexity of a mechanism increases, the system of differential algebraic equations becomes very large and results in a computational bottleneck. This contribution helps alleviate this bottleneck using three tools: (1) an implicit time-stepping algorithm, (2) fine-grained parallel processing on the Graphics Processing Unit (GPU), and (3) enabling parallelism through a novel Constraint-Based Mesh (CBM) approach. The combination of these tools results in a fast solution process that scales linearly for large numbers of elements, allowing meaningful engineering problems to be solved.


Descriptors :   *CONTINUUM MECHANICS , ALGORITHMS , DYNAMICS , FLEXIBLE STRUCTURES , MESH , PARALLEL PROCESSING , PLASTIC DEFORMATION , ROTATION , SOFTWARE TOOLS , SYMPOSIA


Subject Categories : Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE