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 Powertrain 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.

Keywords:

Computer Aided Engineering (CAE), Finite Elements, Multibody Dynamics, Noise, Vibration and Harshness (NVH) Model Correlation, Heavy Commercial Trucks,

PDF

___

Baillie, D., C. (2010), “Noise and Vibration Refinement of Powertrain Systems in Vehicles”, in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 252-285.
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.
Duncan A., Su F., Wolf W. (1996), “Understanding NVH Basics”, Proceedings of the 1996 International Body Engineering Conference.
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.
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.
International Organization for Standardization ISO 7626-1 (1986), “Vibration and Shock - Experimental Determination of Mechanical Mobility - Part 1: Basic Definitions and Transducers”, Geneva.
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.
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.
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
Wang, X. (2010), “Vehicle Vibration Measurement and Analysis”, in Wang, X., Vehicle Noise and Vibration Refinement, Woodhead Publishing Limited, Oxford, pp. 33-67