汽车试验场可靠性试验强化系数的研究  

RESEARCH OF ENHANCEMENT COEFFICIENT OF AUTOMOBILE RELIABILITY ENHANCEMENT TEST ON PROVING GROUND

作　　者：郭虎[1] 陈文华[1] 樊晓燕[1] 邓耀文[2] 吴慧敏[2] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,杭州310027 [2]东风汽车有限公司商用车研发中心,十堰442001

出　　处：《机械工程学报》2004年第10期73-76,81,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(No.50375142);高等学校重点实验室访问学者基金资助项目

摘　　要：通过以某载货汽车为研究对象,测定其前桥的疲劳特性曲线,以及前桥在汽车试验场强化路面、山区公路和普通公路上行驶时的载荷时间历程,采用雨流计数法及数理统计方法得到载荷分布形式,同时,根据疲劳特性曲线和各种路面的程序载荷谱采用修正的Miner线性累积损伤理论计算各种路面的疲劳寿命,从而得到各种路面相对于普通公路的强化系数,为准确评价汽车可靠性和制订科学的汽车可靠性强化试验规范提供了重要依据。A kind of truck as the researched object, mensurated the front axle's fatigue characteristic curve, and it's load-time history when truck is running on the proving ground enhancement roads, mountainous roads and tar-paved roads, obtained the distributing function of loads by means of rain-flow counting met-hod and statistical theory. According to the fatigue characteristic curve and routine loads spectrums of each roads, calculated the front axle's fatigue life respectively, taking advantage of amended Miner linear accumulated fatigue damage theory, obtained the enhancement coefficients of each roads by comparative norm of tar-paved roads. Provided an important foundation for precisely evaluating automotive reliability and establishing a reasonable principle of automotive reliability enhancement test.

关 键 词：汽车 可靠性试验 强化系数 

分 类 号：TB114.3[理学—概率论与数理统计]