The Modelling and Correlation Procedure for Assessment of Vibration Performance of a Heavy Commercial Truck

Application of mathematical modelling and numerical methods is a key element of optimum vehicle development process. Upfront CAE (Computer Aided Engineering) simulations of vehicle attributes are required to select designs that meet vehicle attribute targets and legal requirements. CAE is an attractive approach to predict and optimize the performance of the vehicle, and to make decisions in terms of attribute trade-offs before the vehicle prototypes are available. Even though there are many commercial software packages available, the task of correlation of the CAE model to vehicle test conditions is not a trivial task. In this paper, a systematic correlation methodology starting from subsystem level to full vehicle level is presented. Full vehicle correlation is demonstrated on Power train Idle NVH evaluation. Correlation results show that simulation model is highly correlated to the subsystem and vehicle level test data and, therefore it can be reliably used in the product development cycle.

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[1] Mansinh, K., Miskin, A., Chaudhari, V., and Rajput, A. (2011), "Simulations Based Approach for Vehicle Idle NVH Optimization at Early Stage of Product Development", SAE Technical Paper 2011-01-1591, doi:10.4271/2011-01-1591.
[2] Wang, X. (2010), "Rationale and History of Vehicle Noise and Vibration Refinement", in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 3-17
[3] International Organization for Standardization ISO 7626-1 (1986), "Vibration and Shock - Experimental Determination of Mechanical Mobility - Part 1: Basic Definitions and Transducers", Geneva.
[4] Duncan A., Su F., Wolf W. (1996), "Understanding NVH Basics", Proceedings of the 1996 International Body Engineering Conference.
[5] Hampl, N. (2010), "Advanced Simulation Techniques in Vehicle Noise and Vibration Refinement", in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 174-188.
[6] Baillie, D., C. (2010), "Noise and Vibration Refinement of Power train Systems in Vehicles", in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 252-285.
[7] Braunwart, P., Daly, M., Huber, J. (2003), "Vehicle Cascade & Target Response Analysis (VECTRA) is an Excel Based Tool Used for the Idle NVH Target Cascade Process", 2003-01-1434, May 5-8, 2003, Traverse City.
[8] Goetchius, G., M. (2010), "Body Structure Noise and Vibration Refinement", in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 351-386.
[9] Iyer, G., Prasanth, B., Wagh, S., and Hudson, D. (2011), "Idle Vibration Refinement of a Passenger Car", SAE Technical Paper 2011-26-0069, SIAT, India.
[10] Chaturvedi, B., Rana, D., and Ravindran, M. (2010), "Correlation of Vehicle Dynamics & NVH Performance with Body Static & Dynamic Stiffness through CAE and Experimental Analysis", SAE Technical Paper 2010-01-1137, 2010, doi:10.4271/2010-01-1137.
[11] Kim, K. and Choi, I. (2003), "Design Optimization Analysis of Body Attachment for NVH Performance Improvements", SAE Technical Paper 2003-01-1604, 2003, doi:10.4271/2003-01- 1604.
[12] Moeller, M., Thomas, R., Chen, S., and Chandra, N. (1999), "NVH CAE Quality Metrics", SAE Technical Paper 1999-01-1791, 1999, doi:10.4271/1999-01- 1791.
[13] Abdallah, A. A., Avutapalli, B., Steyer, G., Sun, Z., & Yang, K. (2007), "Effective NVH analysis and optimisation with CAE and computer experiments", International Journal of Vehicle Noise and Vibration, 3(1), 1-26.
[14] Headley, J., Liu, K., and Shaver, R., (2007), "Validation of Vehicle NVH Performance using Experimental Modal Testing and In-Vehicle Dynamic Measurements", SAE Technical Paper 2007-01-2320, 2007, doi:10.4271/2007-01- 2320.
[15] Moura, F., Ferreira, T., Danti, M., and Meneguzzo, M. (2012), "Numerical and Experimental Comparison by NVH Finite Element Simulation in "Body in White" of a Vehicle in the Frequency Range until 800Hz", SAE Technical Paper 2012-36- 0629, 2012, doi:10.4271/2012-36-0629.
[16] John Britto, V., Sivasankaran, S., Loganathan, E., Kupplili Saisankaranarayana, S. (2013), "Commercial Vehicle NVH Refinement through Test-CAE Development Approach", SAE Technical Paper 2013-01- 1006, 2013, doi:10.4271/2013-01-1006.
[17] Sung, S. and Nefske, D. (2001), "Assessment of a Vehicle Concept FiniteElement Model for Predicting Structural Vibration", SAE Technical Paper 2001-01- 1402, 2001, doi:10.4271/2001-01-1402.