Reconstruction of Trimmed NURBS Surfaces for Gap-Free IntersectionsSource: Journal of Computing and Information Science in Engineering:;2020:;volume( 020 ):;issue: 005::page 051008-1Author:Urick, Benjamin
,
Crawford, Richard H.
,
Hughes, Thomas J. R.
,
Cohen, Elaine
,
Riesenfeld, Richard F.
DOI: 10.1115/1.4047427Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The modern engineering technologies of computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM) are ubiquitous in engineering practice. They are focused on creating, analyzing, and fabricating engineering artifacts represented as geometric models. Historically, these technologies developed independently, with different geometric representations that are customized to the needs of the technology. As a result, the combined use of these technologies has led to differences in data structures, file formats, and user knowledge and practice, requiring translation of representations between systems to support interoperability. Complicating this situation is the approximate nature of modeling operations in CAD systems, which can result in gaps at the boundary curves between mating trimmed surfaces of a model. The research presented here is aimed at removing the gaps between trimmed surfaces, resulting in a “watertight” model that is suitable for use directly by downstream applications. A three-step algorithm is presented that includes analysis of the parametric space of the trimming curves, reparameterization to create a global parameter space, and reconstruction of the intersecting surfaces to ensure continuity at the trimming curve.
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contributor author | Urick, Benjamin | |
contributor author | Crawford, Richard H. | |
contributor author | Hughes, Thomas J. R. | |
contributor author | Cohen, Elaine | |
contributor author | Riesenfeld, Richard F. | |
date accessioned | 2022-02-04T22:06:59Z | |
date available | 2022-02-04T22:06:59Z | |
date copyright | 7/9/2020 12:00:00 AM | |
date issued | 2020 | |
identifier issn | 1530-9827 | |
identifier other | jcise_20_5_051008.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4274905 | |
description abstract | The modern engineering technologies of computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM) are ubiquitous in engineering practice. They are focused on creating, analyzing, and fabricating engineering artifacts represented as geometric models. Historically, these technologies developed independently, with different geometric representations that are customized to the needs of the technology. As a result, the combined use of these technologies has led to differences in data structures, file formats, and user knowledge and practice, requiring translation of representations between systems to support interoperability. Complicating this situation is the approximate nature of modeling operations in CAD systems, which can result in gaps at the boundary curves between mating trimmed surfaces of a model. The research presented here is aimed at removing the gaps between trimmed surfaces, resulting in a “watertight” model that is suitable for use directly by downstream applications. A three-step algorithm is presented that includes analysis of the parametric space of the trimming curves, reparameterization to create a global parameter space, and reconstruction of the intersecting surfaces to ensure continuity at the trimming curve. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Reconstruction of Trimmed NURBS Surfaces for Gap-Free Intersections | |
type | Journal Paper | |
journal volume | 20 | |
journal issue | 5 | |
journal title | Journal of Computing and Information Science in Engineering | |
identifier doi | 10.1115/1.4047427 | |
journal fristpage | 051008-1 | |
journal lastpage | 051008-14 | |
page | 14 | |
tree | Journal of Computing and Information Science in Engineering:;2020:;volume( 020 ):;issue: 005 | |
contenttype | Fulltext |