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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GIANNINI, Franca; MONTANI, Erika; MONTI, Marina; PERNOT, Jean-Philippe (Taylor and Francis, 2011)To better simulate the way designers work, specific tools are needed to handle directly specific shape features meaningful for the design intent, without focusing on the underlying mathematic representation. For this purpose ...
GIANNINI, Franca; MONTI, Marina; PELLETIER, Jérôme; PERNOT, Jean-Philippe (Taylor & Francis, 2013)World-wide market competition and the need to create products that better satisfy the market expectations require a more comprehensive involvement of the customer in the product definition loop. Therefore, it is crucial ...
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. ...
LOU, Ruding; GIANNINI, Franca; FALCIDIENO, Bianca; PERNOT, Jean-Philippe; VERON, Philippe; MIKCHEVITCH, Alexei; MARC, Raphael (World Scientific Publishing Company, 2010)Behaviour analysis loop is largely performed on virtual product model before its physical manufacturing. The last avoids high expenses in terms of money and time spent on intermediate manufacturing. It is gainful from the ...
LI, Zongcheng; GIANNINI, Franca; PERNOT, Jean-Philippe; VERON, Philippe; FALCIDIENO, Bianca (Springer, 2016)Today, digital data such as 2D images, 3D meshes and 3D point clouds are widely used to design virtual environments (VE). Most of the time, only one type of those multimodal data is used to describe and specify the shapes ...