This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Experimentation for Design Improvements for Coil Spring in the Independent Suspension
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The objective of this project is to analyze potential design changes that can improve the performance of helical spring in an independent suspension. The performance of the helical spring was based upon the result measure of maximum value of stress acting on it and the amount displacement caused when the spring undergoes loading. The design changes in the spring were limited to coil cross section, spring diameter (constant & variable), pitch and length of the spring. The project was divided into Stage I & Stage II. For Stage I, using all the possible combinations of these design parameters, linear stress analysis was performed on different spring designs and their Stress and displacement results were evaluated. Based on the results, the spring designs were classified as over designed or under designed springs. Then in Stage II, it was checked if the under designed springs can be optimized and classified according to a relevant application of the vehicles (racing cars or luxurious cars).
The driving factor for this project was the amount of research that has taken place to improve the performance of suspension spring. It was seen that most of the research done in this field was directly or indirectly connected to the manufacturing of the spring. It is correct direction indeed, because the helical springs used in suspensions are made of complex alloys and better manufacturing would definitely improve its performance. But for this project, the focus remained on trying new direction for improving performance of spring. After much thought it was decided that bringing design changes to the spring should be experimented and it should be checked if certain design parameters which theoretically could improve spring performance, can they be put together and give positive results.
CitationDong, Y. and Dave, V., "Experimentation for Design Improvements for Coil Spring in the Independent Suspension," SAE Technical Paper 2020-01-0503, 2020.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
|[Unnamed Dataset 4]|
|[Unnamed Dataset 5]|
|[Unnamed Dataset 6]|
|[Unnamed Dataset 7]|
- “Suspension Basics 4- Torsion Bar Springs,” Initial Dave, Archived from the original on May 10, 2010, retrieved January 29, 2015.
- “Suspension Basics 5- Coil Springs,” Initial Dave, Archived from the original on May 1, 2012, retrieved January 29, 2015.
- “Suspension Basics 9- Hydropneumatics Springs,” Initial Dave, Archived from the original on January 29, 2015, retrieved January 29, 2015.
- Serbino, E. and Tschiptschin, A. , “Review on the Fatigue Mechanisms in Automotive Valve Springs,” SAE Technical Paper 2011-36-0003, 2011, https://doi.org/10.4271/2011-36-0003.
- Virnich, K. and Muhr, K. , “Properties of Cold Coiled Automotive Suspension Springs From High Strength Si-Cr-V Wire,” SAE Technical Paper 850057, 1985, https://doi.org/10.4271/850057.
- Vaillant, C. and Ferljcca, R. , “A New Design and Manufacturing Process for Suspension Coil Springs,” SAE Technical Paper 850060, 1985, https://doi.org/10.4271/850060.
- Sakakibara, T., Kusakari, W., Nakano, O., Yasuda, S. et al. , “Development of a New Light-Weight Suspension Coil Spring,” SAE Technical Paper 930263, 1993, https://doi.org/10.4271/930263.
- Miyamura, N., Yamamoto, H. , . Kunou, T., Tsurui, Y., Saitoh, K., Homma, S., and Matsumoto, Y. “Design and Testing of Ovate Wire Helical Springs,” SAE Technical Paper 932891, 1993,https://doi.org/10.4271/932891.
- “Helical or Coil Spring (Automobile) Suspension Spring,” http://what-when-how.com/automobile/helical-or-coil-springs-automobile/.
- Stress Analysis, “NX 9 Tutorial 3 (Basic FEA), ” YouTube, March 5, 2015, https://youtu.be/RUC1n1_2eFg.
- Geometric Optimization, “NX CAE Quick Tips-Geometry Optimization,” YouTube, April 24, 2015,https://youtu.be/uie D0de_nC0.
- Response Dynamics, “NX SOL 103RS Automotive Bracket,” YouTube, February 19, 2017, https://youtu.be/FzSrTLx3LzQ.