This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Silent Block Bush Design and Optimization for Pick-Up Truck Leaf Spring
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Structural elastomer components like bushes, engine mounts are required to meet stringent and contrasting requirements of being soft for better NVH and also be durable at different loading conditions and different road conditions. Silent block bushes are such components where the loading in radial direction of bushes are high to ensure the durability of bushes at high loads, but has to be soft on torsion to ensure good NVH. These requirements present with unique challenge to optimize the leaf spring bush design, stiffness and material characteristics of the rubber.
Traditionally, bushes with varying degree of stiffness are selected, manufactured and tested on vehicle and the best one is chosen depending on the requirements. However, this approach is costly, time consuming and iterative.
In this study, the stiffness targets required for the bush were analysed using static and dynamic load cases using virtual simulation (MSC.ADAMS). Simultaneously, the Road Load Data (RLD) acquired for specific test track was run for to get the loads and cycles on the bush. The data was refined with further runs to get the durability test parameters with load and cycles. Based on the above stiffness and load cycle calculation, elastomer profile were finalised and the material property was chosen to meet all the required performance and durability parameters. With these parameters, a bush was manufactured and found to meet all the performance and durability requirements in vehicle level. This approach, hence, reduced the lead-time and cost involved in development and an optimised design was done without iterations.
CitationHatekar, H., Anthonysamy, B., Saishanker, V., Pavuluri, L. et al., "Silent Block Bush Design and Optimization for Pick-Up Truck Leaf Spring," SAE Technical Paper 2017-01-0455, 2017, https://doi.org/10.4271/2017-01-0455.
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]|
- Ryan, J., Fuja, S., and Schmid, H., "Objective Ride and Handling Goals for the 1997 Chevrolet Corvette," SAE Technical Paper 970091, 1997, doi:10.4271/970091.
- Fuja, S., Schmid, H., and Ryan, J., "Synthesis of Chassis Parameters for Ride and Handling on the 1997 Chevrolet Corvette," SAE Technical Paper 970097, 1997, doi:10.4271/970097.
- Schmid, H., Fuja, S., and Ryan, J., "Design Synthesis of Suspension Architecture for the 1997 Chevrolet Corvette," SAE Technical Paper 970092, 1997, doi:10.4271/970092.
- Neal, M. and Dona, M., "Ride and Handling Development of the 1997 Chevrolet Corvette," SAE Technical Paper 970098, 1997, doi:10.4271/970098.
- Hong Su. Automotive CAE Durability analysis using random vibration approach. In: MSC 2nd Worldwide Automotive Conference. Dearborn, MI: 2000.
- Medepalli S. and Rao R.. Prediction of roadloads for fatigue design, a sensitivity study. International Journal of Vehicle Design. 2000, 23 (1/2): 161-175.
- Riener H., Peiskammer D. and Witteveen W.. Modal durability analysis of a passenger cars front supporting frame due to full vehicle simulation loads. In: Adams user conference. North America: 2001.
- Parekh, D., Whittle, B., Stalnaker, D., and Uhlir, E., "Laboratory Tire Wear Simulation Process Using ADAMS Vehicle Model," SAE Technical Paper 961001, 1996, doi:10.4271/961001.
- Pacejka, H., “Tire and Vehicle Dynamics, 2nd edition," (Warrendale, SAE International, 2012), ISBN 978-0-0809-7017-2.
- Dong, G. X., Long, G. W., and Zhang, H. 2011. “Analysis of Operating Vehicle Handling and Driving Stability Impact Elements.” Presented at the International CSIE 2011, Part II, CCIS 153, pp. 42-47.
- Wang, S. 2010. “Study on the Suspension K&C Characteristics of a Mini-car and Its Influence on the Vehicle.” Handling Stability: 63-7.
- Gillespie, T., “Fundamentals of Vehicle Dynamics,” (Warrendale, Society of Automotive Engineers, Inc., 1992), doi:10.4271/R-114.