CAD assembly descriptors for knowledge capitalization and model retrieval
TypeCommunications avec actes
Today, there exists a huge amount of digital data easily downloadable from Internet and/or simply accessible from large databases. Despite this rise, the methods to retrieve and search for specific data have not been sufficiently studied and developed, notably when considering 3D contents. Thus, it is sometime more efficient to define new 3D shapes starting from scratch rather than to try to make use of existing ones hardly identifiable within those databases. This is particularly true when considering CAD assembly models often resulting from a long and time-consuming modeling phase within the Product Development Process. Thus, having new methods, models and tools to capitalize, retrieve and reuse CAD assembly models would help saving a lot of time. This paper addresses such a difficult problem of finding a method to characterize and structure CAD assemblies so as to be able to search for similar ones. A framework has been designed for the retrieval of globally and/or partially similar assembly mod- els according to different user-specified search criteria. It is based on an assembly descriptor, called the Enriched Assembly Model (EAM), which encodes all the required data automatically extracted from the geometry and structure of the CAD models. The data are organized in several layers thus enabling multi-level structuring and queries. It also allows fuzzy queries, which can be further refined.
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LUPINETTI, Katia; GIANNINI, Franca; MONTI, Marina; PERNOT, Jean-Philippe (Elsevier, 2016)Even if during the Product Design Process, assembly models are described in terms of their constitutive components and associated relationships, only the position of each component is often stored within the Digital Mock-Up. ...
LUPINETTI, Katia; GIANNINI, Franca; MONTI, Marina; PERNOT, Jean-Philippe (Elsevier BV, 2018)Being able to reuse existing design knowledge is of major interest to help designers during the creation of new products. This is true at the level of the parts and even more at the level of the assemblies of multiple ...
LUPINETTI, Katia; CHIANG, Lisa; GIANNINI, Franca; MONTI, Marina; PERNOT, Jean-Philippe (CAD Solutions, LLC, 2017)A multitude of online repositories and a large amount of specific CAD model databases are currently available. Therefore, it is crucial to have access to these data in an easy and in a multi-perspective manner according ...
LUPINETTI, Katia; PERNOT, Jean-Philippe; MONTI, Marina; GIANNINI, Franca (Elsevier, 2019)Currently, the content-based retrieval is a problem of major interest in several different fields and, focusing on mechanical engineering, many approaches exist to compare and retrieve single CAD parts, to evaluate shape ...
LUPINETTI, Katia; GIANNINI, Franca; MONTI, Marina; PERNOT, Jean-Philippe (Elsevier, 2019)The use of Digital Mock-Up (DMU) has become mainstream to support the engineering activities all along the Product Development Process. Over the years, companies generate large databases containing digital models and ...