This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Simulation Strategy for Structure Borne Noise Sources: Use of Super Elements and Blocked Forces Tensors between Suppliers and OEMs to Validate Components at Early Design Stage
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 13, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: 10th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
This paper is a case study from the TESSA project (French funded research program “Transfert des Efforts des Sources Solidiennes Actives”). The general frame of the work was to assess a collaborative design process between a car manufacturer and a major supplier using FE modelling and condensation of structure borne noise sources as an alternative to classic specification method for structure borne sources.
Super elements from different FE commercial softwares have been used to assess the reliability of the method, the compatibility of the softwares and, most important, the relevance of applying a blocked force tensor to the component super element to predict the interior contribution of a component which is the originality of this work.
The case study is an internal combustion engine cooling module (fan + shroud + exchangers) from VALEO including all assembly details (clips, decoupling elements) modelled under ABAQUS and its integration in a RENAULT Espace under NASTRAN. The force tensor is the rotating forces generated by the fan unbalance and propagating through the sub-component of the cooling pack to the car-body. The simulation work has been cross-checked with experimental measurements on a real vehicle as seen on Figure 1.
The paper presents the challenges and hurdles encountered to achieve this complete roll-out of the super-element methodology and conclude on the precision, easiness and relevance of using this process. A comparison with experimental results is also presented.
CitationWojtowicki, J., NELAIN, B., ROUSSET, C., Baudet, G. et al., "Simulation Strategy for Structure Borne Noise Sources: Use of Super Elements and Blocked Forces Tensors between Suppliers and OEMs to Validate Components at Early Design Stage," SAE Technical Paper 2018-01-1509, 2018, https://doi.org/10.4271/2018-01-1509.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
- Guyan, R.J. , “Reduction of Mass and Stiffness Matrices,” AIAA J. 3, 1965.
- Craig, R.R.J. and Bampton, M.C. , “Coupling of Substructures for Dynamic Analyses,” AIAA J. 6(7):1313-1319, 1968.
- Rixen, D.J. , “A Dual Craig-Bampton Method for Dynamic Substructuring,” J. Comput. Appl. Math. 168(1-2):383-391, 2004.
- Corus, M., Balmès, E., and Sauvage, O. , “Estimation of Transmitted Loads Using Experimental Substructuring,” in IMAC, 2008.
- Ambrogio, W.D., Fregolent, A., Gronchi, V.G., and Aq, L.A. , “Substructure Decoupling on an Experimental Test Bed,” 3439-3450.
- Balmès, E. , “Modes and Regular Shapes. How to Extend Component Mode Synthesis Theory,” Proc. XI DINAME-Ouro, Preto-MG-Brazil, no. 1, 2005.
- Cloix, A. and Wojtowicki, J.L. , “Relevance of Inverse Method to Characterize Structure Borne Noise Sources: Application on an Industrial Case and Comparison with a Direct Method,” SAE Technical Paper 2016-01-1796, 2016, doi:10.4271/2016-01-1796.
- Wikipedia , “Rheological Models,” [Online], https://fr.wikipedia.org/wiki/Liste_de_modèles_rhéologiques.
- Carniel, X. and Sanon, A. , “Experimental Method for Transposition of Dynamic Forces Generated by an Active Component from a Test Bench to a Vehicle: a New Standard,” SAE Technical Paper 2016-01-1800, 2016, doi:10.4271/2016-01-1800.
- AFNOR Experimental Standard XP R 19-701 , “Road Vehicles, Experimental Method for Transposition of Dynamic Forces by an Active Component from a Test Bench to a Vehicle,” AFNOR, Feb. 2014, ISSN:0335-3931.