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Validation of an Accelerated Test on a 4-Post Road Simulator
Technical Paper
2007-26-070
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2007
Language:
English
Abstract
The 4-post simulator has been used for many years in the automotive industry to validate vehicle durability. The test vehicle's vertical wheel accelerations and the wheel-to-body displacements that are measured on the proving ground are reproduced accurately on the simulator using commercially available iterative-control software. It is often assumed that the remainder of the vehicle responds as it does on the road. This, of course, applies only to components influenced by vertical loading. However, even within this restricted set of components, questions often arise over failures that occur on the proving ground test, that are not reproduced on the simulator and vice-versa.
This paper defines the process used to derive an accurate laboratory simulation where both accuracy and test time are important; proposes an analysis methodology to pre-define those components where the majority of damage is caused by only vertical loading and explains why some failures are not observed in both tests.
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Authors
Citation
Awate, C., Panse, S., and Dodds, C., "Validation of an Accelerated Test on a 4-Post Road Simulator," SAE Technical Paper 2007-26-070, 2007, https://doi.org/10.4271/2007-26-070.Also In
References
- Dodds, C. J. Plummer, A. R. “Laboratory Road Simulation for Full Vehicle Testing” SIAT 2001
- White, K. J. “The Road Simulator - A Practical Laboratory Approach” Proc. Inst. Mech. Engrs 1985
- Fletcher, J. N. “Global Simulation: New Technique for Multi-Axis Test Control” Sound and Vibration November 1990
- Awate, C. M. Panse, S. M. “Development of Accelerated Test Program for a Mini-truck and its Components” SAE 2006
- Craig, J. B. Dodds, C. J. “The Application of Cross Spectral Analysis in the Identification of Vehicle Characteristics” FISITA Paris 1974