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Octree-to-BRep conversion for volumetric NC simulation

DSpace at IIT Bombay

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Title Octree-to-BRep conversion for volumetric NC simulation
 
Creator KARUNAKARAN, KP
SHRINGI, R
 
Subject region representation
algorithms
objects
model
boundary representation
octree representation
solid modeling
volumetric nc simulation
 
Description User-friendliness such as ease of creation and modification and system-friendliness such as space and time complexities, accuracy etc. are two important criteria for the selection of a solid representation scheme. No single solid representation scheme fully meets all the requirements of user-friendliness and system-friendliness. Hence, any practical CAD/CAM system maintains the geometry of the objects in more than one solid representation scheme simultaneously. Therefore, it is often required to convert one solid representation scheme to the other. The authors have developed a volumetric NC simulation system in which the instantaneous blank is represented as an octree as its space and time complexities are independent of the number of NC blocks. However, since octree does not lend itself readily for operations such as arbitrary transformations, rendered display etc., it is not directly usable for downstream applications such as animated display, verification and optimization. Boundary representation is suitable for these downstream applications. Therefore, it is required to convert octree of the instantaneous blank into BRep. An efficient algorithm for this conversion is presented in this paper. This algorithm essentially splits the octree into three quadtrees that store the geometry along the three principal directions. This algorithm is fast as it involves only tree-traversals.
 
Publisher SPRINGER LONDON LTD
 
Date 2011-08-30T07:10:04Z
2011-12-26T12:58:49Z
2011-12-27T05:49:24Z
2011-08-30T07:10:04Z
2011-12-26T12:58:49Z
2011-12-27T05:49:24Z
2007
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 32(1-2), 116-131
0268-3768
http://dx.doi.org/10.1007/s00170-005-0310-8
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12230
http://hdl.handle.net/10054/12230
 
Language en