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Experiences on solid modelling for automotive design
Published September 18, 1995 by ISATA - Dusseldorf Trade Fair in United Kingdom
Event: ISATA 1995
Design in the automotive industry is a complex task, where rework is commonly needed to accomplish often conflicting requirements upon positioning the components in optimal relation to each other.
Solid modelling tools are effective in these tasks. However, several difficulties commonly arise in practice, because the files sizes become extremely large when too many details are modeled.
On the other hand, incomplete information may lead to wrong decisions when not enough details are modeled. These problems become crucial if the computational facilities available to the designer are limited.
Experiences obtained during a joint project developed between Mercedes Benz of Mexico (MBM) and The Monterrey Institute of Technology (ITESM, Monterrey, Mexico) in designing a new chassis for a suburban bus with rear motor are presented in this paper.
A solid models database of the components required for the design of a bus chassis was developed by a team of undergraduate, graduate students and faculty member together with a design engineer of MBM under the advice of the Engineering Department of MBM.
With this solid models database the design of the assembly was carried out and a real prototype was built at The Integrated Manufacturing systems Center (CSIM) at ITESM, Monterrey Campus.
Rework was minimized and a new bus chassis was developed in record time, which will be tested in the next phase of the project. This solid models database may be used in new projects with increased effectiveness.
Learning how to manage the level of complexity of the computational files created throughout the modelling stage of the project became one of the most important issues since the work was performed on a software platform originally conceived for personal computers.