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NVH Performance Optimization of Full Vehicles in Automotive
Technical Paper
2012-01-1525
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
There are various optimization tools available on the market and they are successfully used for improving vehicle component designs in terms of performance and light weight [6][7][9][10]. But when it comes to full vehicle optimization, optimization tools are only one aspect of the entire process.
To build up a FEM Model for NVH analysis the assembly process and load case definition play an important role. Both steps are very complex and the chance to make mistakes is very high. After initial analysis the results has to be interpreted to understand the NVH behavior and detect optimization potential. Diagnostic tools could be used to determine modal or panel participation factors or do transfer path analysis. Then components or subsystems could be optimized using numerical optimization tools. For this step often super elements are used to reduce calculation time without losing too much of accuracy. As a full vehicle often contains of many single super elements the handling is also an important point. A basic precondition for optimization is that the analysis model has to be of good quality to achieve realistic optimization results. Check routines in the Preprocessing and in the solver make sure that model errors are detected.
A vertical process solution had been created to address these challenges in full vehicle NVH optimization. This will be shown on practical examples.
Citation
Gruber, H. and Guan, J., "NVH Performance Optimization of Full Vehicles in Automotive," SAE Technical Paper 2012-01-1525, 2012, https://doi.org/10.4271/2012-01-1525.Also In
References
- Radioss, Altair OptiStruct, Users Manual v11.0 2011 Altair Engineering inc. Troy MI
- HyperWorks, Altair Users Manual v11.0 2011 Altair Engineering inc. Troy MI
- Charline, Bonfils EDAG GmbH & Co. KGaA Guellec, Antoine AUDI AG Model updating considering damping effects EHTC 2011
- Duncan, A. Goetchius, G. Govindswamy, K. Guan, J. “Structure Borne NVH Workshop,” Presentation at SAE 2011 NVH Conference 2011
- Gruber, H. Schuhmacher, G. Förtsch, C. Rieder, E. Optimization assisted structural design of the rear fuselage of the A400M, a new military transport aircraft, *Altair Engineering NAFEMS Seminar: “Optimization in Structural Mechanics” April 27 28 2005 Wiesbaden Germany
- Schramm, U. Thomas, H. Zhou, M. “Manufacturing Considerations and Structural Optimization for Automotive Components,” SAE Technical Paper 2002-01-1242 2002 10.4271/2002-01-1242
- Uwe, Schramm Optimization Processes for Aerospace Structures 8th World Congress on, Structural and Multidisciplinary Optimization June 1 5 2009 Lisbon, Portugal
- Schwerzler, Dennis Dr. Optimization using Radioss & the N&V Director EHTC November 2009
- Thue, Ronald B. Bennett, Douglas Yancey, Robert N. Application of Structural Optimization Technologies and Methods to Reduce Design Time and Improve Structural Robustness American Institute of Aeronautics and Astronautics
- Ming, Zhou Fleury, Raphael Patten, Sam Stannard, Neil Mylett, Dave Gardner, Simon Topology Optimization - Practical Aspects for Industrial Applications 9th World Congress on Structural and Multidisciplinary Optimization June 13 17 2011 Shizuoka, Japan
- Bendsoe, M.P. Sigmund, O. Topology Optimization - Theory, Methods and Applications Springer Verlag Heidelberg 2003