Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Identifying and re-meshing contact interfaces in a polyhedral assembly for digital mock-up
Engineering with Computers
Virtual assembly technologies based on constraint and DOF analysis
Robotics and Computer-Integrated Manufacturing
Contact identification for assembly–disassembly simulation with a haptic device
The Visual Computer: International Journal of Computer Graphics
Introduction to Algorithms, Third Edition
Introduction to Algorithms, Third Edition
Image-based collision detection and response between arbitrary volume objects
Proceedings of the 2008 ACM SIGGRAPH/Eurographics Symposium on Computer Animation
OptiX: a general purpose ray tracing engine
ACM SIGGRAPH 2010 papers
Adaptive image-based intersection volume
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
Combinatorics and the rigidity of CAD systems
Computer-Aided Design
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The preparation of CAD models from complex assemblies for simulation purposes is a very time-consuming and tedious process, since many tasks such as meshing and idealization are still completed manually. Herein, the detection and extraction of geometric interfaces between components of the assembly is of central importance not only for the simulation objectives but also for all necessary shape transformations such as idealizations or detail removals. It is a repetitive task in particular when complex assemblies have to be dealt with. This paper proposes a method to rapidly and fully automatically generate a precise geometric description of interfaces in generic B-Rep CAD models. The approach combines an efficient GPU ray-casting technique commonly used in computer graphics with a graph-based curve extraction algorithm. Not only is it able to detect a large number of interfaces efficiently, it also provides an accurate Nurbs geometry of the interfaces, that can be stored in a plain STEP file (Iso 10303-1:1994 (1994)) [16] for further downstream treatment. We demonstrate our approach on examples from aeronautics and automotive industry.