商用车驾驶室及悬置系统疲劳仿真技术.pdfVIP

商用车驾驶室及悬置系统疲劳仿真技术 王忠校，闫鑫，郭茂林，徐中皓，姜迪 （一汽技术中心车身试验室，130011） 【摘要】： 【摘要】： 【【摘摘要要】】：：对于商用卡车驾驶室来说，一般的静态强度分析方法已无法满足其在恶劣工况下的强度要求，因此疲劳仿真 方法被引入其设计分析过程中。本文对商用车驾驶室及悬置系统的疲劳仿真技术进行论述，从路谱信号处理与评估、多 体建模、虚拟载荷迭代和疲劳寿命分析等各个关键技术点进行了介绍。通过这样一个疲劳仿真流程，可以在新开发卡车 驾驶室及悬置的设计前期预测其疲劳寿命，也能解决现有车型的疲劳开裂问题。 关键词： 关键词： 关关键键词词：：疲劳耐久寿命；驾驶室及悬置系统；虚拟载荷迭代；多体动力学 Durabilitysimulationtechnologyofcommercialtruck’scabandsuspensionsystem WangZhongxiao,YanXin,Guo Maolin,XuZhonghao JiangDi, WangZhongxiao,YanXin,Guo Maolin,XuZhonghao JiangDi, WWaannggZZhhoonnggxxiiaaoo,,YYaannXXiinn,,GGuuooMMaaoolliinn,,XXuuZZhhoonngghhaaooJJiiaannggDDii,, [Abstract]: [Abstract]: [[AAbbssttrraacctt]]:: With regard to the commercial truck, the static strength analysis can not fulfill the requirement of its strength in the complicated load cases. Therefore the durability simulation method is introduced to lead the process of design analysis. The durability simulation technology of commercial truck’s cab and suspension system is discussed in the key fields of road load data acquisition, signal processing and evaluation, MBS, virtual iteration and fatigue life analysis. By means of this method, it is not only very useful to predict the fatigue life of the system of the newly developing truck’s cab and suspension in the very beginning of the designbutalsoreallyconvenienttofigureouttheproblemofthefatiguecrackingintheexistingvehicles. Keywords: fatigue durability life; cab and suspension system; virtual iteration; dynamic of multi body Keywords: fatigue durability life; cab and suspension system; virtual iteration; dynamic of multi body KKeeyywwoorrddss:: ffaattiigguuee dduurraabbiilliittyy lliiffee;; ccaabb aanndd ssuussppeennssiioonn ssyysstteemm;; vviirrttuuaall iitteerraattiioonn;; ddyynnaammiicc ooff mmuullttii bbooddyy system system ssyysstteemm 1.引言 商用卡车产品开发过程中，由于其使用工况比较复杂，疲劳破坏问