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Multi-Objective Optimization of Interior Noise of an Automotive Body Based on Different Surrogate Models and NSGA-II
Technical Paper
2018-01-0146
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper studies a multi-objective optimization design of interior noise for an automotive body. An acoustic-structure coupled model with materials and properties was established to predict the interior noise based on a passenger car. Moreover, three kinds of approximation models related damping thickness and the root mean square of the driver’s ear sound pressure level were established through Latin hypercube method and the corresponding experiments. The prediction accuracy was analyzed and compared for the approximate response surface model, Kriging model and Radial Basis Function neural network model. On this basis, multi-objective optimization of the vehicle interior noise was conducted by using NSGA-II. According to the optimization results, the damping composite structure was applied on the car body structure. Then, the comparison of sound pressure level response at driver’s ear location before and after optimization was performed at speed of 60 km/h on a smooth road. It shows that the vehicle interior low frequency noise is reduced and the environment of the vehicle interior noise is improved effectively by using the optimized thicknesses of the key body structures with laying damping composite structures.
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Chen, S. and Zhang, J., "Multi-Objective Optimization of Interior Noise of an Automotive Body Based on Different Surrogate Models and NSGA-II," SAE Technical Paper 2018-01-0146, 2018, https://doi.org/10.4271/2018-01-0146.Data Sets - Support Documents
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