CrossLink: Geometry API [Slides]

Technical Report · Thu Jan 19 04:00:00 EST 2023

DOI:https://doi.org/10.2172/1921995· OSTI ID:1921995

Drayna, Travis William ^[1]; Lang, Laura M. ^[1]; Long, Louie Joseph ^[1]; Stam, Henry Russell ^[1]

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1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

The mesh generation process is very challenging and time consuming when working with complex CAD models. The process of creating and sorting geometric entities into groups appropriate for meshing is labor intensive and prone to error. In addition, the common data exchange formats such as STEP and IGES do not propagate information such as entity names that may be defined in the original model. Finally, entity counts change frequently with parameter variation as a result of tolerance-based geometry operations. Thus, sorting by index does not provide a robust and repeatable means for grouping. xGeom is a geometry library that enables the creation of NURBS curves and surfaces via a python scripting interface. xGeom is ideal for studying relatively simple models and is fully integrated with CrossLink’s mesh generation capabilities. For more complex models, xCAD is a python-based Creo Parametric CAD model driver that enables the model to be generated, queried, parametrically modified, regenerated, and exported without data loss and in a fully repeatable manner.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1921995
• Report Number(s): LA-UR-23-20540
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING