Journal of South China University of Technology (Natural Science Edition) ›› 2020, Vol. 48 ›› Issue (10): 105-112.doi: 10.12141/j.issn.1000-565X.200026

• Mechanical Engineering • Previous Articles     Next Articles

Inherent Characteristics Analysis and Optimization of Powertrain Mounting Systems Involving Fuzzy Uncertainty

Lü Hui1 YANG Kun1 HUANG Xiaoting2 YUAN Yu1 LI Peihang1   

  1. 1． School of Mechanical and Automotive Engineering，South China University of Technology，Guangzhou 510640,Guangdong，China; 2． School of Automobile and Traffic Engineering，Guangzhou College of South China University of Technology，Guangzhou 510800，Guangdong，China
  • Received:2020-01-15 Revised:2020-04-24 Online:2020-10-25 Published:2020-09-14
  • Contact: 黄晓婷(1988-)，女，硕士，助教，主要从事汽车 NVH 研究。 E-mail:huangxiaoting1@gcu. edu. cn
  • About author:吕辉(1986-)，男，博士，副教授，主要从事汽车 NVH 分析与控制研究。E-mail: melvhui@ scut. edu. cn
  • Supported by:
    Supported by the National Natural Science Foundation of China (51975217) and the Natural Science Founda-tion of Guangdong Province (2020A1515010352)

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Abstract: In engineering practice，various uncertainties inevitably exist in the powertrain mounting system (PMS) of vehicle． In this study，fuzzy variables were introduced to address the uncertain parameters of a PMS involving fuzziness． Firstly，the fuzzy Monte-Carlo method (FMCM) was developed to calculate the fuzzy responses of inhe-rent characteristics of PMS． Then，an efficient analysis method named as fuzzy perturbation-central difference me-thod (FPCDM) was derived to improve computational efficiency． Next，the reliability-based analysis and design optimization method of the PMS with fuzziness was proposed based on FPCDM． Finally，the effectiveness of the pro-posed method was verified by a numerical example，and the fuzzy reliability and optimal design of the PMS with fuzziness were also investigated．

Key words: powertrain mounting system, fuzzy uncertainty, inherent characteristics, reliability analysis, opti-mized design