Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Method for Extracting Volumetric Features in a Mesh Representation of CAD Model using Random Cutting Planes and Graph Traversals
Technology Category/Market
Technology: Volumetric Features In A Mesh Representation Of CAD Model;
Industry: Automotive, Software CAD models,
Applications: Mechanical design applications, Electronics Equipment design
Market: The global CAD software market is valued at $9.3 B in 2019, & projected to reach $18.7B by 2030 at a CAGR of 6.6% during forecast period.
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Problem Statement
- Mesh representation of objects, in particular with triangles as facets are very useful when it comes to visualizing the objects and prominent in Engineering/CAD domain which can be used in finite element analysis (FEA).
- However, the mesh model do not intrinsically capture any high level information such as features present in a CAD model & a lot of prior art literature discussed about feature recognition which are classified into decomposition based, geometry based approaches, but unable to disclose the required features outcomes.
- Therefore, there is a requirement to address above issues in efficient manner.
Technology
- Patent describes about a method for retrieving feature extraction in CAD/engineering model, more specifically volumetric feature extraction in three-dimensional (3D) triangular meshes of CAD models.
- The extraction of volumetric features is done by using random cutting planes and graph traversals.
- The implemented method is described in smart chart hereinbelow and exemplary figures.
- Input a CAD model & slice the CAD model by randomly oriented planes,
- Collect the triangles that gave an inner loop for any plane and output the triangles which will give the features,
- The features are identified by using contours generated from randomized cutting planes,
- The cutting plane pass through the mesh model surrounded by an outer contour & narrow down to the set of triangles of the inner contour which contributes the features from the closed contours.
Key Features/Value Proposition
Technical Perspective:
- Claimed Patent provides closed contour which are generated due to intersection between the mesh & the plane called rings;
Industrial Perspective:
- Patented method retrieves the volumetric features which includes blind holes, through holes, complex hole, slots & pockets.
Questions about this Technology?
Contact for Licensing
Research Lab
Prof. Ramanathan M
Department of Engineering Design
Intellectual Property
- IITM ID F Ref. 1367;
- IN Patent No: 422251 (Granted)
Technology Readiness Level
TRL- 3
Proof of Concept ready & validated