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Correlation and Simulation Process Improvement for Automotive Axle
Technical Paper
2007-01-1205
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Previous studies showed that a good correlation of axle vertical bending test can be obtained by choosing a proper correlation strategy that adapts both displacement and strain as correlation targets [1]. However, due to experimental error, as well as some environment noises, it was found that the correlation problem was highly nonlinear. This creates a large difficulty in searching for the global optimal solution with a gradient-based optimization technique that largely depends on the selection of initial search points. The confidence for finding a global optimal solution is highly limited without a search of the complete design space. Additionally, certain aspects of axle system modeling, such as bearing stiffness effects on the correlation result, are yet to be found. This study is a continuous investigation of CAE correlation of the axle vertical bending test by focusing on the improvement of the correlation process and confidence. A new optimization algorithm using design exploration techniques was adopted for the optimal solution search. The study found that the previous 2-step search process could be replaced by a one-step global search process. Additionally, different exploring search techniques were compared and application guidelines were provided. The new correlation process is now implemented in the product development process.
Citation
Lee, Y., "Correlation and Simulation Process Improvement for Automotive Axle," SAE Technical Paper 2007-01-1205, 2007, https://doi.org/10.4271/2007-01-1205.Also In
References
- Lee, Y. “Correlation and Simulation of Automotive Axle” SAE 2006 Congress Detroit, MI. May 2006
- Lee, Y. “Improved Test Correlation by Optimization Technique” SAE 2005 Congress Detroit, MI. May 2005
- Padmanabhan, Sanjeev Hubner, James P. et al “Load and Boundary Condition Calibration using Full-field Strain Measurement” SEM conference Portland, Oregon June 2005
- Lee, Y Monkaba, V. “Visteon Axle Driveline Simulation Finite Element Analysis Tool” 2000 FISITA World Automotive Congress Seoul, Korea June 12 - 15 2000
- Lee, Y. “IRS Axle Subsystem Modeling Guide” Visteon Axle Driveline, Internal Report January 1999
- VR&D Engineering “Genesis User Manual-V7.0” August 2001