| Author | Raymond R. Collar, Rolf Wentorf and Mark S. Shephard |
|---|---|
| Title | A Multiple Level h-Refinement Adaptive Analysis Procedure Using PATRAN, P/FEA and Finite Octree |
| Year | 1993 |
| Abstract | This report presents the results of a project to develop multiple level three dimensional h-refinement adaptive analysis capabilities using PATRANTM for preprocessing support, P/FEATM for analysis and error estimation, PARASOLIDSTM for geometric model creation, and Finite Octree [14] for mesh generation. New software was developed to determine multiple level refinements and process PATRAN input and output files. The project also utilizes a local remeshing scheme for Finite Octree to lower the total mesh refinement times. The adaptive loop iterations are controlled by a C shell script (UNIX) which executes the software modules in the correct order. Several test cases were developed, the performance of the software was measured, and the rate of convergence was examined. Where possible, numerical results are compared with the exact solution. An overview of the adaptive modeling environment follows this section. It includes an explanation of how the software pieces interact to exchange data as a system. The multiple-level mesh prediction procedures are then described, and the last sections present the test cases for the software, the conclusions, and the references. |