MODIFICATIONS TO THE FINITE ELEMENT MODELLER PROGRAM "REFINE"

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Authors
  1. Palmeter, M.F.
  2. Chernuka, M.W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
Abstract
Program REFINE was initially developed as part of an adaptive finite element modelling package for VAST where from estimates of discretization errors based on element residuals, the finite element model would be selectively refined (by element subdivision) until acceptable levels of accuracy (according to computed error estimates) were attained. However, increasingly the REFINE program finds application as a general modelling tool which complements the data generation capabilities of PVAST and HVAST. Under these circumstances, the PVAST and HVAST programs need only concentrate on achieving accurate geometric models, since subsequent refinement of the model to attain acceptable finite element accuracy can be achieved with REFINE. This is particularly useful when the initial model is defined in a pointwise fashion with a graphics table. In this context as well, selective model refinement would generally be employed but the experience of the modeller would dictate where the model refinements would be.
Keywords
Discretization;PVAST;HVAST;REFINE;Modelling;Boundary nodes;Grid refinement
Report Number
DREA-CR-92-462;R-90-91-11 — Contractor Report
Date of publication
01 Aug 1990
Number of Pages
71
DSTKIM No
95-02847
CANDIS No
151394
Format(s):
Document Image stored on Optical Disk;Hardcopy

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