Introduction
This document defines the requirements on a digital archive topreserve for the long term the 3D explicit geometry of single CADparts. The goal is to preserve the 3D information without loss withrespect to the geometry produced by the original CAD system,following the principles laid down in NAS 9300-003 ‘Fundamentalsand Concepts’, including the use of an open data format.
In scope
The following is in scope of this part of NAS9300:
• Business specification for long term archiving and retrievalof CAD 3D explicit geometry (see chapter 5);
• Essential information of CAD 3D explicit geometry to bepreserved (see chapter 6);
• Data structures detailing the main fundamentals and conceptsof CAD 3D explicit geometry (see chapter 7);
• Verification rules to check CAD 3D explicit geometry forconsistency and data quality (see chapter 8);
• Validation rules to be stored with the CAD 3D explicitgeometry in the archive to check essential characteristics afterretrieval (see chapter 9).
Note: This includes the geometrical external shape resultingfrom CAD disciplines 3D entities (E.g., 3D Structural componenets,3D Tubing, 3D electrical harness, 3D composite, etc.).
Out of scope
The following is outside the scope of this part of NAS9300:
• The formal definition of validation and verification rules tocheck 3D explicit geometry for consistency and data quality using amachine-readable syntax;
• Implicit or parametric geometry;
• Geometric Dimensioning & Tolerancing (GD&T), Product& Manufacturing Information (PMI);
• Assembly structures
- Edition:
- NEW
- Published:
- 04/27/2012
- Number of Pages:
- 28
- File Size:
- 1 file , 1.6 MB
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