空气悬架结构件低载强化规律研究  

Research of Low-load Strengthening Regularity of Air Suspension Structures

作　　者：项菲菲[1] XIANG Feifei(School of Mechanical Engineering,Jiangxi University of Technology,Nanchang 330098,China)

机构地区：[1]江西科技学院机械工程学院

出　　处：《现代信息科技》2019年第22期159-160,163,共3页Modern Information Technology

基　　金：江西省重点研发计划项目：空气悬架结构件疲劳耐久性设计关键技术研究（项目编号：20161BBE50053）;江西省教育厅自然科学技术项目：基于低载强化的悬架疲劳加速试验方法研究（项目编号：GJJ180976）;江西省汽车服务及产业升级2011协同创新中心开放基金项目：汽车悬架耐久性试验载荷谱的优化研究（项目编号：18XTKFYB03）

摘　　要：低幅载荷存在强化和损伤两重性,空气悬架结构件的工作环境大多数情况是低副载荷的交变作用。研究空气悬架结构件相同材料的试样的低载强化规律对改善结构件的设计、指导结构件材料的研制具有重要的意义。在指定的较高的强化次数下进行低幅载荷的最佳载荷幅的试验研究,再进行指定载荷幅的最佳强化次数研究。对疲劳试验数据使用数学工具MATLAB对试样进行拟合得到载荷幅值和强化次数与疲劳寿命间的关系,进而通过求导依次得出最佳的强化载荷幅和强化次数,通过交叉试验得出平均疲劳寿命与强化载荷幅和强化次数的多元函数关系,求偏导以求出最佳的强化载荷幅和强化次数组合。The low amplitude load has the duality of reinforcement and damage.The working environment of the air suspension structure is mostly the alternating action of the low auxiliary load.It is of great significance to study the strengthening law of low load on samples of the same material of air suspension structure to improve the design of structure parts and guide the development of structure parts.The optimum strengthening times of low amplitude loading were studied under the specified higher strengthening times,and then the optimum strengthening times of the specified strengthening times were studied.On the fatigue test data using mathematical tool MATLAB to fit sample of load amplitude and frequency and the relationship between fatigue life,then,the optimal strengthening load amplitude and strengthening times are obtained through derivative calculation,and the multivariate function relationship between average fatigue life and strengthening load amplitude and strengthening times is obtained through cross test,and the optimal combination of strengthening load amplitude and strengthening times is obtained by partial derivative calculation.

关 键 词：空气悬架 低载强化 载荷幅值 强化次数 

分 类 号：U464.13[机械工程—车辆工程] TH140.1[交通运输工程—载运工具运用工程]