摘要
鉴于传统的路谱采集方法受限于样车试验,开发周期长,且无法有效预测后期参数变化和评估全新车型,本文中在传统整车动力学载荷分析的基础上,建立了轮胎高频模型和试验场3D数字路面模型,提出了路面-轮胎-悬架-车身的这一完整传递路径的整车虚拟路谱动态响应分析和耐久性能评价方法。通过生成基于3D数字路面的动态载荷,可在项目开发早期进行汽车结构耐久性能评估。结果表明,用此方法获得的数据与传统轮心力传感器采集的路谱数据相当接近,能有效识别零件的风险位置和逐步免除开发阶段的路谱数据采集,在开发早期实现结构耐久性精确评估。
In view of that the tra d it io n a l road spectra acq uis it ion method is l im ite d by prototype vehicle testwith long development cycle and can not ef ie ct ively pre dic t subsequent parameter changes and estimate the parame-ters of new vehicle make, a high-frequency model fo r t ire and a 3D d ig ita l road surface model are established based on the traditional analysis on vehicle dynamic lo a d s, and a method of v ir tu a l road spectra dynamic response analysis and durability performance evaluation of vehicle fo r the complete transfer path from ro a d, t i r e, suspension to car body is proposed. By generating dynamic load based on 3D d ig ita l ro a d,the d u ra b i l i ty performance of vehicle struc-ture can be estimated in early phase of project development. The results show that the method adopted can get the data rather close to road spectra data collected b y . tra d it io n a l wheel-center force transducer and ef fect ively id e n t ify the risk locations of component and gradually el iminate road spectra data acq uis it ion in development stage,achieving accurate estimation of structural durabi l i ty in early stage of development.
出处
《汽车工程》
EI
CSCD
北大核心
2017年第10期1211-1216,共6页
Automotive Engineering
关键词
轮胎模型
3D数字路面
虚拟路谱
载荷预测
疲劳耐久性
tire model
3D digi tal r oad
vi r tual ro a d s p e c t ra
lo a d p r e d ic t io n
fa t ig u e d u r a b i l i ty
