重庆理工大学学报2024，Vol.38Issue(15)：115-120,6.DOI:10.3969/j.issn.1674-8425(z).2024.08.013
副车架衬套分数阶粘弹动力学模型构建与应用研究
Construction and application of fractional viscoelastic dynamics model for subframe bushing
摘要
Abstract
Taking the bushing of a car's rear subframe as the research object,the fractional order Kelv-Voigt model and the high-order fractional derivative FVMP model are identified respectively through the bushing dynamic stiffness test data,and the fitting error of the high-order fractional derivative three-element parallel bushing mathematical model is selected.Based on the user subroutine Gfosub file in Adams and Fortran language,the rubber bushing mechanical model is compiled and the vehicle ride comfort simulation platform is built.The proposed modeling method is verified by random input simulation experiments.Our results show the error between the RMS value of the weighted acceleration of the rear seat rail of the linear model and the test value is about 14.1％,and the error of the new model is about 9.2％,which is closer to the real ride comfort evaluation index.The effectiveness of the model is verified.关键词
非线性动力学/黏弹特性/参数辨识/用户子程序/整车试验验证Key words
nonlinear dynamics/viscoelastic properties/parameter identification/user subroutines/Vehicle experiment verification分类
信息技术与安全科学引用本文复制引用
陈宝,周凤,陈伦洋,田裕枫,曹亮..副车架衬套分数阶粘弹动力学模型构建与应用研究[J].重庆理工大学学报,2024,38(15):115-120,6.基金项目
重庆市科委重点攻关计划项目(2021CCB03) （2021CCB03）
