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Improvement of BIW NVH Characteristics Using a Concurrent Design Optimization Approach
Technical Paper
2003-01-1596
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The low frequency noise, vibration and harshness (NVH) characteristics play a critical role in the design of vehicle Body-In-White (BIW) structures. Lower order modes influence the structural reliability of the vehicle as well as its ride and handling characteristics. Special consideration is given to ensure that they are spaced apart and not coincident with the frequencies of other vehicle subsystems (e.g. engine and chassis). The added stiffness required to improve the NVH characteristics comes at a cost: increased BIW mass, which affects vehicle dynamics, fuel economy, and point mobilities/structural inertances. This paper documents a procedure to balance BIW build cost, mass and structural performance through an integrated optimization process.
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Authors
- Akira Nomura - Fuji Heavy Industries Ltd.
- Satoshi Murakami - Fuji Heavy Industries Ltd.
- Hirokazu Kuroda - Fuji Heavy Industries Ltd.
- Katsuyoshi Tanaka - Fuji Heavy Industries Ltd.
- Regu Ramoo - Altair Engineering Inc.
- Philip Kosarek - Altair Engineering Inc.
- Mohan Parthasarathy - Altair Engineering Inc.
- Rumpa Chandaroy - Altair Engineering Inc.
Topic
Citation
Nomura, A., Murakami, S., Kuroda, H., Tanaka, K. et al., "Improvement of BIW NVH Characteristics Using a Concurrent Design Optimization Approach," SAE Technical Paper 2003-01-1596, 2003, https://doi.org/10.4271/2003-01-1596.Also In
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V112-6; Published: 2004-09-15
Number: V112-6; Published: 2004-09-15
References
- Gong, B. Goetchius, G. M. Duncan, A. E. Balasubramanian, M. Gogate, S. D. “Process to Achieve NVH Goals: Subsystem Targets via “Digital Prototype” Simulations” SAE No. 1999-01-1692 1999
- Gogate, S. D. Duncan, A. E. ““Digital Prototype” Simulations to Achieve Vehicle Level NVH Targets in the Presence of Uncertainties” SAE No. 2001-01-1529 2001
- Altair Optistruct User's Manual, V 5.1 Altair Engineering, Inc. Troy, MI 2002
- MSC/Nastran Quick Reference Guide, V 70.7