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Roof Performance Analysis for a Small Emergent Market Vehicle
Technical Paper
2015-36-0155
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Nowadays, OEM’s challenge is to harmonize vehicle’s performance, design and cost. Furthermore, all of these antagonistic key performance factors must be integrated in a much faster pace than ever before in the automotive industry. Thinner parts and low cost materials Body-in-White (BIW) systems struggles to deliver the same/higher performance and quality levels as the previous generations. On top of that, considering that BIW structures typifies almost 30% in a vehicle mass, and almost 40% of a vehicle cost, focusing in this system, this paper will study the body upper structure, more specifically its roof panels.
Currently, almost all small vehicles are composed by three to four roof bows (figure 1) within its structure. A Roof Bow is a sheet metal part, usually spot welded to the BIW inner frame, forming the inner structure of the vehicle body. Its primary function is to supporting the roof panel loads, such as Oil Canning and local stiffness. Considering roof bows perform minor role in the structure torsional stiffness, a vehicle with three roof bows was chosen to be studied. With the single purpose to analyze the roof panel by modifying its curvature and/or shape as control factors, in order to delete one of its roof bow, thus reducing mass and costs with at least the same performance levels as before, without affect final customer perception of quality.
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Authors
- André Luiz Pereira - General Motors do Brasil - Product Engineering - Tech Center
- Bruno Bennati - General Motors do Brasil - Product Engineering - Tech Center
- Carlos Kuba - General Motors do Brasil - Product Engineering - Tech Center
- Mauro Marcial - General Motors do Brasil - Product Engineering - Tech Center
- Percio Amoroso - General Motors do Brasil - Product Engineering - Tech Center
- William Yamada - General Motors do Brasil - Product Engineering - Tech Center
Topic
Citation
Pereira, A., Bennati, B., Kuba, C., Marcial, M. et al., "Roof Performance Analysis for a Small Emergent Market Vehicle," SAE Technical Paper 2015-36-0155, 2015, https://doi.org/10.4271/2015-36-0155.Also In
References
- Guo , M ; Hu. Y ; Sanghera Finite Element Analyses and Correlations on Oil Canning of a Door Outer Panel SAE Technical Paper 2009-01-0818 2019
- Bosch , Robert GmbH Automotive Handbook 2002 1035 1047
- Heisler , Heinz Advanced Vehicle Technology 2002 1 4
- Pereira , J.L.A. Roof Performance Internal GMB DFSS