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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 80
PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping and C.A. Mota Soares
Paper 55
Object-Oriented Visualization of Solids Analyzed by the Boundary Element Method R.M. Müller+ and P.A. Pagliosa*
+State University of Mato Grosso do Sul, Dourados, Brazil
Full Bibliographic Reference for this paper
, "Object-Oriented Visualization of Solids Analyzed by the Boundary Element Method", in B.H.V. Topping, C.A. Mota Soares, (Editors), "Proceedings of the Fourth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 55, 2004. doi:10.4203/ccp.80.55
Keywords: object oriented programming, visualization, boundary element method.
Summary
The paper present an object-oriented application for visualization of
boundary and domain data resulting from numerical analysis of elastic
solid models by the boundary element method (BEM). The C++ classes
that implement the visualization pipeline and rendering resources of
the application are components of OSW -- Object Structural
Workbench --, a toolkit for developing object-oriented modeling
programs in science and engineering [1]. To implement
the proposed application, several new classes for BEM visualization
have been created and added into the OSW Class Library (OCL).
The idea behind the implementation is simple. In addition to
discretization of the boundary Figure 1 illustrates an elastic thick spherical shell with external and internal radius 80 cm and 60 cm, respectively, modulus of elasticity 1000 Pa, and Poisson's ratio 0.3, in which was applied an internal pressure equal to 1 Pa. The window at the left displays color map and isolines for boundary displacements in the direction of the Y-axis. At the right, one uses transparency to show color map, isolines, and conical glyphs for displacements at domain points on two perpendicular sections crossing the deformed solid. The main advantage of the proposed implementation is that, once obtained the analysis results, both visualization networks execution and image rendering are carried out in real-time, even when it runs on common Pentium-based workstations. The main disadvantage is the necessity of a volume mesh, which should not be required in BEM analysis. Improvements on the next version include the elimination of the domain mesh ant the implementation of tensor visualization techniques, such as tensor ellipsoids and hyperstreamlines. References
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