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| 基于多体动力学的479Q发动机连杆载荷与强度分析 | |
| 引用本文： | 何柏岩,陈寺专,裴毅强,刘翾,董正身.基于多体动力学的479Q发动机连杆载荷与强度分析[J].内燃机工程,2011,32(4). |
| 作者姓名： | 何柏岩 陈寺专 裴毅强 刘翾 董正身 |
| 作者单位： | 1. 天津大学机械工程学院,天津,300072 2. 天津大学内燃机燃烧学国家重点实验室,天津,300072 3. 河北工业大学车辆工程系,天津,300132 |
| 基金项目： | 国家自然科学基金项目(E050605046); 天津市应用基础及前沿技术研究计划资助项目(10JCYBJC25400) |
| 摘 要： | 以479Q汽油机为研究对象,建立了曲轴、连杆和活塞的三维几何模型和多体动力学模型。载荷边界条件采用真实示功图和负载数据,得到了做功行程中作用于连杆两端的载荷谱。采用惯性释放技术计及惯性力对连杆应力的影响,计算得到了做功行程中任意时刻连杆的动态应力场。对静力计算方法和惯性释放方法进行了对比,后者得到的动态应力场更加接近真实情况。根据曲轴转速为2 000 r/min时的气缸压力测试曲线(最高燃烧压力4.6 MPa)和对应的发动机扭矩(165 N.m),计算得到连杆最大轴向载荷为26 kN,最大工作应力为259MPa。根据局部应力应变法,该工况下的寿命为2.941×1016转,连杆近似为无限寿命。 |
| 关 键 词： | 内燃机 多体系统 连杆 惯性释放 强度 |
Load and Strength Analysis of Connecting Rod in 479Q Engine Based on Multibody Dynamics |
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| HE Bai-yan,CHEN Si-zhuan,PEI Yi-qiang,LIU Xuan,DONG Zheng-shen.Load and Strength Analysis of Connecting Rod in 479Q Engine Based on Multibody Dynamics[J].Chinese Internal Combustion Engine Engineering,2011,32(4). | |
| Authors: | HE Bai-yan CHEN Si-zhuan PEI Yi-qiang LIU Xuan DONG Zheng-shen |
| Affiliation: | HE Bai-yan1,CHEN Si-zhuan1,PEI Yi-qiang2,LIU Xuan3,DONG Zheng-shen3(1.School of Mechanical Engineering,Tianjin University,Tianjin 300072,China,2.State Key Laboratory of Engine,3.Department of Automotive Engineering,Hebei University of Technology,Tianjin 300132,China) |
| Abstract: | Three dimensional geometry model and multibody dynamics model for crankshaft,connecting rod and piston of model 479Q gasoline engine were built up.The load boundary conditions were determined by measured actually indicated diagram and load data to calculate the load spectrum acting on connecting rod ends in working stroke.Based on inertia relief method and finite element analysis,the dynamic stress field of the connecting rod was obtained,which was closer to real conditions than obtained using conventional ... |
| Keywords: | IC engine multibody system connecting rod inertia relief strength |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
