柴油机连杆小头衬套摩擦磨损试验研究

针对柴油机连杆小头衬套磨损失效问题，依照局部强化技术的工程思路，在摆动摩擦副摩擦磨损试验台上开展了3种制备工艺下，衬套与活塞销匹配的摩擦磨损试验，并对其制备工艺进行剖析。试验结果表明：从摩擦扭矩、摩擦温度、宏观/微观形貌和磨损量4个方面对比，相同工况下挤压工艺衬套的摩擦磨损性能均优于旋压工艺衬套，表现出对标进口工艺衬套的能力，挤压工艺衬套整体晶粒均匀性良好，这是产品表现出良好摩擦磨损性能的重要原因。     

Kelvin-Voigt模型橡胶衬套对汽车行驶平顺性的影响分析

为研究汽车行驶平顺性受到悬架橡胶衬套的影响，依据Kelvin-Voigt橡胶衬套模型，采用虚拟坐标法，建立了包含橡胶衬套Kelvin-Voigt模型的6-DOF汽车振动模型。针对所建模型，采用线性滤波白噪声法建立前、后车轮路面激励模型，以C级随机路面激励为车辆振动系统输入，运用四阶Variable step length Runge-Kutta算法和傅里叶变换法对所建模型展开时域和频域仿真；分析匀速行驶工况下汽车座椅、车身、悬架动挠度及轮胎动载荷受到悬架橡胶衬套的影响；并将仿真结果与不包含橡胶衬套的6-DOF汽车振动模型相比较。仿真结果表明，在悬架系统中安装橡胶衬套确实能提升汽车行驶平顺性，增强轮胎接地性能。     

强力旋压加工的高速柴油机连杆衬套

介绍了采用20F117型尾管强力旋压机对柴油机连杆衬套进行强力旋压的加工工艺，论述了几个主要工艺参数对衬套力学性能及加工质量的影响，给出了选定工艺方案下加工的连杆衬套的力学性能。     

进口汽车零配件改代实例

三菱FV413型汽车发动机的连杆小头一侧端面呈斜形，更换连杆衬套应规定的专用工具在5吨级压力机上进行。但往往因衬套与承孔的装配轴线偏斜而损坏新衬套。为此，可采取将包容件(连杆)加热，被包容件(衬套)冷却的方法镶装。改装要点如下：     

某柴油机连杆小头结构演变分析

针对某柴油机连杆小头衬套松脱问题,提出2种连杆小头结构改进方案,分别从安装状态的衬套背压、工作状态的衬套滑移以及小头内孔变形三方面研究关键参数及敏感区域对结构刚度的影响。结果表明:增加衬套壁厚、增大连杆小头支撑刚度可有效增大衬套背压,减小内孔变形,降低衬套由切向力所导致的滑动风险。     

双金属衬套无镀烧结新工艺的开发与应用

针对双金属衬套产品生产过程中存在的镀铜成本高，镀层易氧化，烧结易产生漏烧、过烧等实际问题，研制开发了钢板无度烧结表面处理工艺。简化了双金属衬套产品的生产过程，降低了生产成本。     

轿车悬架橡胶衬套结构特点分析

介绍了橡胶衬套的种类,阐述了汽车悬架橡胶衬套的基本性能及其应用情况.研究了悬架的副车架橡胶衬套和控制臂橡胶衬套在车辆中各向特性参数的分布及其对汽车操纵稳定性和平顺性的影响,并对橡胶衬套的结构设计特点、橡胶材料和配方、疲劳破坏性能等进行了分析.     

高速柴油机连杆衬套的旋压加工

本文介绍了采用3D65CNC－2000型旋压机对柴油机连杆衬套进行旋压加工的工艺研究．文中研究了壁厚减薄率和退火温度对QSn7－0．2衬套力学性能的影响，且给出了不同方法加工成形后衬套的力学性能和物理性能。     

振动磨机橡胶衬套的磨损失效分析与研究

简要介绍了振动磨机的特性、用途和工作原理，阐述了振动磨机系统中橡胶衬套的磨损失效理论。结合实例详细论述了橡胶衬套的设计方法。     

汽车衬套压装工装设计

对于很多非承载式乘用车车身来说，一般都有车架底盘作支撑，并且前轮都为独立悬架结构设计，下摆臂后部与车架连接安装部位都有一个与车架上套管孔过盈配合的衬套总成。为了让衬套与套管孔顺利装配，设计制作了1套液压衬套工装工具。既保证了产品的装配质量，又能保证生产按时完成。     

CA6102型发动机连杆小头铜套成型工艺的改进

针对发动机连杆小头铜套串动，烧蚀及早期磨损现象，对卷制铜套，真空吸铸铜套，粉末冶金铜套及砂型铸造铜套进行了力学性能，耐磨性能及装车考核试验，试验结果表明，砂型铸造铜套性能较差，而真空吸铸铜套性能好，可以替代卷制铜套。     

New nonlinear bushing model for general excitations using Bouc-Wen hysteretic model

Because the characteristics of rubber bushing significantly affect the accuracy of vehicle dynamics simulations, they should be accurately modeled in the vehicle suspension model. In this paper, a new nonlinear bushing model for automotive bushing components is developed to improve the accuracy of vehicle dynamics analysis. Bushing components were first tested to capture the nonlinear and hysteretic behavior of typical elements by using a MTS 3-axis elastomer tester. A simple Bouc-Wen hysteretic differential model was modified to generate a more precise rubber bushing model. A sine wave, step input, and random excitations are imposed on the bushing. The ADAMS program is used to calculate sensitivity and the VisualDOC program is employed to find the optimal parameters for the bushing model. An error function is designed to find optimal parameters of the model. Parameter identification is carried out to satisfy the static and dynamic characteristics due to sine and step excitation inputs. It was proved that the proposed model could predict the bushing forces under sine, step, and random inputs well. The errors are within 10% in the overall range. To show the validity of the proposed model, a numerical example was also carried out. Because the bushing forces due to random excitation input show good agreement with experiments, the proposed bushing model is available in the vehicle dynamics simulation.     

某副车架橡胶衬套潜在的失效特性及改进方案

在现代汽车技术中,橡胶衬套的应用越来越广泛,对车辆NVH性能的影响越来越重要。但在使用过程中,橡胶衬套的检查和维护极其不便,直到发生断裂后经过反复检查才能知道,造成很大的经济损失。文章对某副车架橡胶衬套潜在的失效模式及机理进行分析,在此基础上对进行现行过程控制预防,对提高橡胶衬套的使用寿命,具有非常重要的意义。     

A Feasibility Study on Indirect Identification of Transmission Forces through Rubber Bushing in Vehicle Suspension System by Using Vibration Signals Measured on Links

This paper presents a feasibility study on using the rubber bushing itself as a sensor for the identification of transmission forces in vehicle suspension systems. The method starts from the idea that the transmission forces can be related to the deformation of the rubber bushing by an appropriate model and the deformation of the rubber bushing can be obtained by estimation of the relative vibration across the bushing. Simple theories are presented to deal with modeling of a given geometry of rubber bushing by a concentric spring and damper, correlating of measurements of the vibration on the links to the stiffness and damping parameters, and selection of the vibration measurement positions. Importance of the measurement position selection in relation to the measurement noise is illustrated by simulation studies. Then, validity of the proposed indirect approach will be shown by applications to a rear suspension system of dual link type.     

Sensitivity analysis and optimisation of suspension bushing using Taguchi method and grey relational analysis

In this paper, a novel method is presented for investigating suspension bushing based on mechanical properties of the bushing, their effective directions, spring stiffness and damping coefficient of bushing. The vehicle vibration model and suspension geometry parameters are used to optimise the vehicle suspension based on multi-body dynamics simulation (ADAMS/CAR) initially. Several experiment tests based on ISO 4128 and ISO 7401 have been performed in one of main Iranian automaker (SAIPA) in order to verify the ADAMS/CAR model. The grey relational analysis based on using Taguchi L27 orthogonal array is used to obtain the optimum suspension. Then the bushing characteristics are optimised considering the indicated method. This method considers a combination of ride comfort and handling qualities of vehicle as objective functions simultaneously. The results of optimum suspension are compared with typical Renault Logan which declares the accuracy and efficiency of this method in optimising suspension bushing.     

A Feasibility Study on Indirect Identification of Transmission Forces through Rubber Bushing in Vehicle Suspension System by Using Vibration Signals Measured on Links

This paper presents a feasibility study on using the rubber bushing itself as a sensor for the identification of transmission forces in vehicle suspension systems. The method starts from the idea that the transmission forces can be related to the deformation of the rubber bushing by an appropriate model and the deformation of the rubber bushing can be obtained by estimation of the relative vibration across the bushing. Simple theories are presented to deal with modeling of a given geometry of rubber bushing by a concentric spring and damper, correlating of measurements of the vibration on the links to the stiffness and damping parameters, and selection of the vibration measurement positions. Importance of the measurement position selection in relation to the measurement noise is illustrated by simulation studies. Then, validity of the proposed indirect approach will be shown by applications to a rear suspension system of dual link type.     

客车悬架吊杆衬套失效的原因分析及改进

针对某客车悬架吊杆衬套批量失效的问题进行分析,结合衬套样品的耐水解、硬度和微观形貌测试结果,提出改进方案,问题得到解决。     

衬套压装机上料滚动定位装置研发与设计

文章介绍了衬套压装机上料滚动定位装置的工作原理,针对衬套上料难和定位不准的问题,分析了上料定位装置的设计要点及关键技术,并对衬套压装机上料滚动定位装置主要机构做了简单说明。     

包含液压衬套和整车系统动力学仿真建模及方法研究

文章针对液压衬套动态特性展开研究,基于衬套零件结构参数与动刚度、阻尼角的关系,利用AMESim平台搭建了零件的物理模型,通过零件的台架试验验证了模型的有效性.基于Adams平台搭建整车动力学模型并编写相关集成模块进行数据端口连接,实现零件和整车模型间的数据实时交互,并设计整车试验对文章建立的混合模型进行验证.结果表明:...