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Simplification of CAD Geometries to perform CEM Simulations
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
2021 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The purpose of this study is to investigate small features in CAD geometries which have high influence on computational time and memory consumption during electromagnetic simulations using CAE software. Computational Electromagnetics (CEM) simulations of complex CAD geometries like passenger cars crash often simulations remain incomplete due to a lot of irrelevant details. The key to eliminating the limitations enumerated above is to remove irrelevant details in CAD geometries within the acceptable margin of accuracy. The maximum 5% percentage of error in accuracy during Computational Electromagnetics (CEM) simulations is compromised. CAD geometry is transferred into CAE geometry. The modification of geometry is done by removing irrelevant details to get optimal mesh and improve the computational time and memory consumption during simulations with ANSA and HYPERMESH software at their best potential. At the end, electromagnetic simulations are done on original and simplified CAD models in CST and in COMSOL. Only magnetic flux density distribution across the modified and unmodified CAD model by cut points 3D on different coordinate positions is analysed. The results are compared with quality of mesh in terms of accuracy and reduction in computational time and memory. The features in CAD geometries are identified, these features can be removed and computational time and memory consumption reduced with minimum loss of accuracy during simulation.

Place, publisher, year, edition, pages
2021. , p. 92
Keywords [en]
Defeaturing, Modification, Blending Features, FEA, CEM, CAD, CAE.
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-22416OAI: oai:DiVA.org:bth-22416DiVA, id: diva2:1616657
External cooperation
Volvo Car Corporation
Subject / course
MT2565 Master's Thesis in Mechanical Engineering - Structural Mechanics
Educational program
MTAMT Master of Science Programme in Mechanical Engineering with emphasis on Structural Mechanics
Supervisors
Examiners
Available from: 2021-12-06 Created: 2021-12-03 Last updated: 2021-12-06Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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