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Design of Suspension Components for Small Overlap Frontal Impact (SOF) Analysis
Technical Paper
2017-26-0363
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Insurance Institute for Highway Safety (IIHS) Small Overlap Frontal (SOF) impact assessment program is one of the latest challenges for the automotive development. The SOF load bypasses the primary crumple zone structure and concentrating the force in the front wheel, suspension and firewall - areas not traditionally designed to absorb and dissipate crash energy. Design changes of architectural components at later stages of product development is very difficult and expensive. This paper deals with the procedure to improve SOF performance through CAE as well as to develop the physical test cart to avoid the full vehicle SOF test. CAE procedure developed on chassis subsystem level to validate the SOF performance of front suspension. Using this procedure, design changes in the suspension components to improve the SOF performance can be done by keeping the suspension durability and other performance requirements as intact. This subsystem model is arrived from the full vehicle crash model and test cart developed using this procedure. We have verified the performance in CAE and correlated test results with physical model. Also, consistency of the test cart performance validated with different vehicle architectures. Ninety percent correlation of the loads distribution in the suspension components with the test results is achieved. The proposed method helps in front loading concepts in vehicle development program, and reduces the cost on full vehicle testing for the SOF performance of front suspension components.
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Citation
Jayaraman, S., "Design of Suspension Components for Small Overlap Frontal Impact (SOF) Analysis," SAE Technical Paper 2017-26-0363, 2017, https://doi.org/10.4271/2017-26-0363.Also In
References
- IIHS HLDI- Small Overlap Frontal Crashworthiness Evaluation, Crash Test Protocol (Version III)
- Lam , J. , Dennis , N. , Dix , J. , Lambrecht , M. et al. A Comparison of the NHTSA Research Offset Oblique and Small Overlap Impact Tests and the IIHS Moderate and Small Overlap Tests SAE Int. J. Trans. Safety 2 2 268 278 2014 10.4271/2014-01-0537
- Hexcel - Honeycomb Energy Absorbers http://www.hexcel.com/Solutions/Industries/IHoneycomb-Energy-Absorbers
- The images used in this paper were taken from the open sources. They are all more relevant to the actual work done. Please refer the links below for the images taken
- http://articles.sae.org/11626/
- http://cartechina.com/tag/front-wheel/
- http://www.testresources.net/products/test-machines/structural-test-systems/kinematic-compliance-test-rig
- http://www.autoguide.com/auto-news/tag/small-overlap-crash-test
- http://www.google.com/patents/US20140091595
- http://superpro.com.au/tradeview/index.php?view=parts_vehicleapplication&cid=999500751