Reliability-based Test Track Schedule Development for a Vehicle Suspension System 2007-01-1653
A process for establishing an accelerated proving ground durability schedule for a vehicle suspension system, based on real customer roads, was developed in this work. The available road load data for a specific chassis design was acquired by using a test vehicle that was equipped to measure the front and rear spindle loads, wheel-to-body displacements, and body mount loads. The test target representing the customer usage consists of a combination of 5 tracks of public roads located in Michigan, adding up to 100 miles, and is based upon a previous work by Ferris, J.B. and Larsen, J.L. [2]. It was then extrapolated to a target customer equivalent mileage of 150, 000 miles with an assigned extrapolation factor for each public road. A repeat value for each of seven test tracks at the Chelsea Proving Grounds was generated using state-of-the-art optimization techniques to match the weighted, rainflow cycle histograms from the road load data channels, . These repeat values represent how many total passes of each event would need to be combined to duplicate spindle loads and wheel-to-body displacements during 150, 000 miles of public road usage for the 95th percentile customer.
Citation: Haq, S., Lee, Y., Larsen, J., Frinkle, M. et al., "Reliability-based Test Track Schedule Development for a Vehicle Suspension System," SAE Technical Paper 2007-01-1653, 2007, https://doi.org/10.4271/2007-01-1653. Download Citation
Author(s):
Salman Haq, Yung-Li Lee, Jerry L. Larsen, Marvin Frinkle, Bindu Akkala
Affiliated:
Stress Lab & Durability Development, Daimler Chrysler, Test Schedule Development & Test Management, Daimler Chrysler, LMS of North America
Pages: 7
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Reliability and Robust Design in Automotive Engineering, 2007-SP-2119
Related Topics:
Suspension systems
Reliability
Test facilities
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