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Proceedings of CAD'17, 2017, 342-346
Towards an Extended Model based Definition for the Digital Twin
Abstract. Model-based definition is an emerging paradigm which utilizes 3D-CAD models to carry engineering information. The introduction of CAD tools led to the realization that drawings may no longer be the best method for communicating information. The 3D format offers significant advantages over its 2D counterpart. Adoption of MBD offers significant cost and time savings, “a savings of more than $3M annually at a single naval facility will be generated by implementing MBD” along with “a 33 percent reduction in the development schedule of new items is expected” and “MBD shall also create a significant reduction in manufacturing errors, which should result in a decrease in the amount of rework, providing significant cost savings.” As industry completes MBD adoption, the next step will be moving beyond MBD’s roots. The original focus of MBD was on the communication channel between design and manufacturing, but now it is spreading across the entire organization. MBD no longer refers solely to manufacturing. It is not purely a geometric activity. The MBD theory encompasses all aspects of a product. This concept was formalized in the digital twin “A Digital Twin is an integrated multiphysics, multiscale, probabilistic simulation of an as-built vehicle or system that uses the best available physical models, sensor updates, fleet history, etc., to mirror the life of its corresponding flying twin." In essence, the digital twin is a perfect replica of a physical object that is digital.
Keywords. CAD, Digital Twin, Behavior, MBD