Page 94

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Publication Type technical report
School or College College of Engineering
Department Computing, School of
Creator Yen, Wu-chien Jonathan
Title On Representation and Discretization of Finite Element Analyses
Date 1985
Description The use of B-spline geometric representation and subdivision mechanism is explored for use in finite element analysis. On the representation issue, an attribute modelling technique is introduced to model the problem specification and the result interpretation. This modelling technique relies on the true representation of the domain geometry such that all the problem parameters are associated with the geometry as nongeometric attributes. It allows the user to specify a problem domain independent of the choices of mesh configuration. The analysis results are also treated as associated attributes and are blended into the original domain geometry, e.g., shape deformation and energy distribution are simulated by rendering color pictures. On the discretization issue, an adaptive algorithm is designed to generate near-optimum meshes. This algorithm synthesizes the result distribution from the previous analysis run with the domain geometry by using the former as heuristics to subdivide the latter into element geometry. The subdivided geometry reflects the grading of the result such that near-optimum results can be obtained from the synthesized mesh, i.e., smaller (and more) elements are populated in more critical areas. The algorithm is self-adaptive and requires minimum user input. An experimental implementation includes linkages between a geometric modeller and an analysis code such that a closed engineering cycle is formed. Example structural analyses are performed for planar domains, three dimensional shell domains and three-dimensional solid domains.
Type Text
Subject finite element; b-spline; geometric representation; subdivision mechanism; planar domain; shell domain; solid domain
Subject LCSH Computer graphics; Finite element method--Computer programs
Language eng
Bibliographic Citation Yen, W. J. (1985). On Representation and Discretization of Finite Element Analyses.
Series University of Utah Computer Science Technical Report
Relation is Part of ARPANET
Format Medium application/pdf
Format Extent 40,453,386 bytes
File Name Yen-On_Representation.pdf
Conversion Specifications Original scanned with Kirtas 2400 and saved as 400 ppi uncompressed TIFF. PDF generated by Adobe Acrobat Pro X for CONTENTdm display
ARK ark:/87278/s67q10qq
Setname ir_computersa
Date Created 2016-05-26
Date Modified 2016-05-31
ID 103066
Reference URL

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Title Page 94
File Name Yen-On_Representation.pdf
Setname ir_computersa
Date Created 2016-05-26
Date Modified 2016-05-26
ID 103055
Reference URL