Importing mesh entities through IGES/PDES

Basu, Debashis; Kumar, Sanjay

doi:10.1016/0965-9978(95)00075-5

Cited by 11 publications

(3 citation statements)

References 1 publication

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“…The interoperability program has the capacity to neutralize CAD data in real time on a feature by feature basis between different CAD systems. This makes multi-user CAD interaction possible which greatly reduces the time to market for products as shown in Figure 1 to address the issue of data exchange and IGES Version 1.0 was developed in 1980 [3]. IGES was the first attempt at resolving data exchange challenges between CAD systems and allowed the geometry of the CAD part to be viewed by those who were using different CAD systems.…”

Section: Proposed Solutionmentioning

confidence: 99%

Neutral Parametric Canonical Form for 2D and 3D Wireframe CAD Geometry

Freeman

Bowman

Red

et al. 2015

Volume 11: Systems, Design, and Complexity

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Transferring CAD data between heterogeneous CAD systems is a challenge because of differences in feature representation. A study by the National Institute for Standards and Technology (NIST) performed in 1999 made a conservative estimate that inadequate interoperability in the automotive industry costs them $1 billion per year. One critical part of eliminating the high costs due to poor interoperability is a neutral format between heterogeneous CAD systems. An effective neutral CAD format should include a current-state data store, be associative, include the union of CAD features across an arbitrary number of CAD systems, maintain design history, maintain referential integrity, and support synchronous collaboration. This research has focused on extending an existing synchronous collaborative CAD software tool to allow for a neutral, current-state data store. This has been accomplished by creating a Neutral Parametric Canonical Form (NPCF) which defines the neutral data structure for many basic CAD features to enable translation between heterogeneous CAD systems. The NPCF’s for a few key features have been implemented in a synchronous collaborative program and work between the NX and CATIA CAD systems. The 3D point, 2D point, 2D line, and 2D spline NPCF’s will be specifically presented. Complex models have successfully been modeled and exchanged in real time and have validated the NPCF approach. Multiple users can be in the same part at the same time in different CAD systems and create and update models in real time.

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Section: Proposed Solutionmentioning

confidence: 99%

Neutral Parametric Canonical Form for 2D and 3D Wireframe CAD Geometry

Freeman

Bowman

Red

et al. 2015

Volume 11: Systems, Design, and Complexity

View full text Add to dashboard Cite

show abstract

“…There are two kinds of IGES file format: ASCII and binary [1,2]. The ASCII file format was divided into fixed format and compressed format.…”

Section: Analysis Of Igesmentioning

confidence: 99%

Research on Automatic Programming Technology of Holes Processing Based on IGES

Zhao

2012

AMR

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IGES (Initial Graphics Exchange Standard) is a general graphics data exchange standard, which has been widely used for data exchange between different CAD/CAM systems. But the inherent defect of IGES makes it difficult to use in the field of automatic programming. This article focuses on the automatic programming of holes processing. Entities were labeled with different entity number, on which the hole entity could be distinguished and extracted based. The intersection lines of hole and NURBS surface could be calculated by NURBS surface intersection algorithm. The redundancy of intersecting lines is a key problem. This article gives an intuitive treatment.

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“…An IGES file allows the transfer of geometry data from one graphical environment to another. IGES, if properly interpreted and implemented, helps an application programmer import relevant information of complex models, generated in a specific CAD environment, for further processing in an analysis environment (Basu and Kumar 1995). The IGES file was then imported into the grid generation software, (CFD-GEOM) to fully utilize the transfer of data.…”

Section: Geometry Generation -Annular Design *mentioning

confidence: 99%

Passive Control of Particle Dispersion in a Particle-Laden Circular Jet Using Elliptic Co-Annular Flow: A Means for Improving Utilization and Emission Reductions in Pulverized Coal Burner

Choudhuri¹

2003

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A passive control technology utilizing elliptic co-flow to control the particle flinging and particle dispersion in a particle (coal)-laden flow was investigated using experimental and numerical techniques. Preferential concentration of particles occurs in particle-laden jets used in pulverized coal burner and causes uncontrollable NO x formation due to inhomogeneous local stochiometry. This particular project was aimed at characterizing the near-field flow behavior of elliptic coaxial jets. The knowledge gained from the project will serve as the basis of further investigation on fluid-particle interactions in an asymmetric coaxial jet flow-field and thus is important to improve the design of pulverized coal burners where non-homogeneity of particle concentration causes increased NO x formation. vi

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Importing mesh entities through IGES/PDES

Cited by 11 publications

References 1 publication

Neutral Parametric Canonical Form for 2D and 3D Wireframe CAD Geometry

Neutral Parametric Canonical Form for 2D and 3D Wireframe CAD Geometry

Research on Automatic Programming Technology of Holes Processing Based on IGES

Passive Control of Particle Dispersion in a Particle-Laden Circular Jet Using Elliptic Co-Annular Flow: A Means for Improving Utilization and Emission Reductions in Pulverized Coal Burner

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