Modern vehicles are engineered in a highly collarborative environment. Vehicles architectures are shared across continents, system suppliers are highly integrated, and development tasks are distributed across diverse engineering centres. But in spite of all interfaces generated by this, the development of vehicles is required to be accomplished in ever shorter timeframes with higher quality. This general trend is especially true for CAE. Hence strategies have to be found how to overcome the potential problems. For CAE-modelling, this requires a set of common standards across engineering centres that are well accepted by the customers - the functional simulation groups, combined with high quality data input by the CAD design community to the simulation process. In order to achieve exactly that, GM installed a global focus group concerned with modelling. This group is responsible for setting standards for especially the synchronized Mastermodels which are a basis for all structural simulations within the virtual engineering process, ranging from model structure, naming and numbering conventions to specific sub-system modelling guidelines. In addition, the modelling group at Opel has started to utilise the CAD program UG NX and standard PDM - teamcenter functionalities to prepare the model generation as much as possible, allowing high automation of the subsequent meshing and assembly process. This paper highlights the most important strategies enabling efficient and collaborative CAE-modelling. Finally the auther observes that CAE modelling can be improved in terms of speed and quality and traceability of the data origin with the following strategies: 1. A well organised CAD data basis, including the possibility to configure the required and relevant vehicle vehicle configurations - tracking vehicles; 2. The generation of a CAE Master Geometry Model that is structured according to the requirements of the CAE models; 3. Attributes for CAE already defined in the CAD environment of the Master Geometry Model, especially for the main systems body and closures; 4. The development tools and macros utilising this attributes, ensuring a one-to-one correlation between the Master Geometry Model and the corresponding Master Mesh Model; 5. Globaly agreed, well documented and understood guidelines for the generation of the CAE models; 6. The introduction of the FATXML data format for the documentation of meta data from data origin down to the results file with enhance the traceability.
CAE-Mastermodels - the cornerstone of synchronised
2010
17 Seiten, 12 Bilder
Conference paper
English
British Library Conference Proceedings | 2010
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