Correlation of a CAE Hood Deflection Prediction Method

2008-01-0098

04/14/2008

Event
SAE World Congress & Exhibition
Authors Abstract
Content
As we continue to create ever-lighter road vehicles, the challenge of balancing weight reduction and structural performance also continues. One of the key parts this occurs on is the hood, where lighter materials (e.g. aluminum) have been used. However, the aerodynamic loads, such as hood lift, are essentially unchanged and are driven by the front fascia and front grille size and styling shape. This paper outlines a combination CFD/FEA prediction method for hood deflection performance at high speeds, by using the surface pressures as boundary conditions for a FEA linear static deflection analysis. Additionally, custom post-processing methods were developed to enhance flow analysis and understanding. This enabled the modification of existing test methods to further improve accuracy to real world conditions. The application of these analytical methods and their correlation with experimental results are discussed in this paper. Finally, this correlation study initiated a redesign of the hood lift measurement apparatus, which is also discussed.
Meta TagsDetails
DOI
https://doi.org/10.4271/2008-01-0098
Pages
9
Citation
Ramsay, T., Fredelake, A., and Stevens, K., "Correlation of a CAE Hood Deflection Prediction Method," SAE Technical Paper 2008-01-0098, 2008, https://doi.org/10.4271/2008-01-0098.
Additional Details
Publisher
Published
Apr 14, 2008
Product Code
2008-01-0098
Content Type
Technical Paper
Language
English