金固股份:技术实力领先的汽车钢制车轮行业龙头

浙江金固股份有限公司(以下简称"金固股份")是一家以钢制车轮的研发、生产和销售为主营业务的高新技术企业,公司主要产品为钢制滚型车轮,包括5°滚型系列和15°滚型系列的钢制车轮。5°钢制滚型车轮主要用于轿车、微型车等乘用车和部分特种用途车辆;15°钢制滚型车轮产品主要     

高强度钢制车轮的轻量化研究

车轮是汽车最重要的承载件之一,其轻量化研发成为汽车行业发展的焦点。论述了高强度钢轮的性能要求,重点从新材料研发、车轮轻量化优化设计、钢轮制造工艺改进三方面,对高强度钢制车轮的轻量化研究深入剖析,进一步挖掘高强度钢制车轮轻量化潜力,希望能为钢制车轮轻量化研究开拓思路。     

钢制车轮弯曲疲劳试验与寿命估算

疲劳破坏是引起钢制车轮失效的主要原因。在钢制车轮应用中,应该评估好其性能特征,降低车轮失效机率,同时保护好车轮的安全度。根据钢制车轮的使用标准,设计弯曲疲劳试验,在此基础上估算车轮的寿命,加强钢制车轮的性能控制力度。本文以钢制车轮为研究对象,分析弯曲疲劳试验与寿命估算。     

浅析中国钢制车轮企业营销竞争策略

对汽车钢制车轮产业环境进行简要介绍,然后对其价值链、经营战略加以分析,在此基础上对钢制车轮企业的营销竞争策略进行了深入的剖析并提出建议。     

钢制车轮轮辋电阻对焊开裂影响因素分析

乘用车钢制车轮制造主要包括四大工艺：轮辐工艺、轮辋工艺、总成焊接工艺及涂装工艺,轮辋电阻对焊工艺是轮辋生产中的重要工艺。轮辋电阻对焊工艺是将长方形轮辋板料,通过圈圆后对焊成环形,然后对环形材料进行滚压成型形成轮辋。轮辋电阻对焊开裂不仅使轮辋生产的质量成本提高,而且在装胎时易造成车轮慢漏气的质量缺陷,引起客户抱怨。因此,对轮辋电阻对焊开裂影响因素的研究具有非常重要的意义。     

汽车钢制车轮的响应面法优化设计

针对汽车钢制车轮研发周期长和生产成本高的问题,以15×5J钢制车轮为例,基于ANSYS Workbench 19.2软件完成车轮重要尺寸的参数化建模并创建车轮弯曲疲劳试验有限元模型,采用优化空间填充设计法,生成车轮重量及Mises应力的试验数据,获得车轮重量及应力响应面,最终在短期内成功确定车轮最优轻量化数模并应用于生产。实物测试实验结果表明:轻量化测试车轮符合SAE标准,车轮厚度是最重要的安全影响因素且不应小于4mm,优化后车轮减重3.69%,测试验证了仿真结果的正确性。     

基于AutoCAD的钢制轮辋滚压模具参数化设计

为了实现汽车钢制轮辋滚压模具的快速设计,结合反求工程的思想,基于参数化设计方法,使用C#编程语言对AutoCAD2010进行了二次开发。该系统能够根据反求工程采集的车轮实体的参数或者根据国家标准中汽车钢制轮辋型号快速生成钢制轮辋滚压模具图纸,提高汽车车轮生产企业的研发效率,缩短产品开发周期。     

钢制车轮弯曲疲劳寿命的影响因素

弯曲疲劳寿命是钢制车轮的一项重要性能指标,但制造过程中的过盈配合和轮辐板厚变化对车轮疲劳寿命的影响规律尚不清楚。本文通过测定轮辐板厚变化规律,并建立考虑过盈配合和轮辐板厚变化的钢制车轮弯曲疲劳有限元模型,比较了是否考虑这两种因素对车轮疲劳热点位置应力水平的影响,最后采用比例双轴疲劳方法预测车轮疲劳寿命。结果表明,过盈配合及轮辐板厚变化均会带来车轮弯曲疲劳寿命的下降,在有限元分析中不可忽略。     

滚轮滚速对非对称轮辋成形的影响

轮辋作为车轮的关键零件,其性能直接影响到车轮的优劣。目前钢制车轮得到迅速发展,滚压工艺作为钢制车轮轮辋主要的成形工艺,在生产中得到广泛的应用。针对某型号车轮轮辋截面轮廓形状不规则和厚度不均匀等问题,基于有限元软件ABAQUS/Explicit,建立了轮辋滚压成形三维仿真模型,研究了滚轮的滚速对非对称轮辋成形的影响。仿真结果表明滚轮的滚速会影响轮辋的截面轮廓形状和厚度。当上滚滚速较高时,轮辋轮缘处减薄率过高、厚度不均匀;当上滚滚速较低时,轮辋滚压效率低;当上滚滚速为200r/min时,轮辋各部分厚度达到设计要求,轮辋成形好。实验结果与仿真规律符合较好,为滚轮滚速的合理选择提供理论依据。     

铝合金车轮螺栓的紧固试验

汽车零部件生产企业的产品质量是决定整车生产质量的关键。单就乘用车使用的铝合金车轮而言,还有很大的发展空间。目前,国外主要汽车企业对铝合金车轮要求的部分试验项目在我国自主品牌的车企中还没有要求或者是不知道如何要求。     

一种客车后独立悬架上的传动装置

客车独立悬架是把客车车身和车轮弹性地连接在一起,它是汽车上的重要总成之一。悬架的主要作用是传递作用在车轮和车身之间的一切力和力矩,比如支撑力、制动力和驱动力等,并且缓和由不平路面传给车身的冲击载荷、衰减由此引起的振动、保证乘员的舒适性、减小货物和车辆本身的动载荷,同时,其车轴被分成两段,每只车轮用螺旋弹簧独立地安装在车架(或车身)下面,当一边车轮发生跳动时,另一边车轮不受波及,客车的平稳性和舒适性好。独立悬架已成为一种发展大趋势。     

乘用车开发平台化模块化的浅析和构想

目前乘用车行业竞争激烈,乘用车研发和生产成本也日益增大,车型产品的投放和更新换代也不断加快,这些因素都将对车企的研发和生产能力提出新的要求,乘用车开发平台化和模块化的应用已是各车企普遍达成的共识。主要介绍国外先进车企在乘用车开发平台化和模块化的应用,并依托东风柳州汽车有限公司的开发经验,提出了乘用车平台化和模块化开发的思路,从而为车企降低车型开发成本,提高研发效率提供借鉴。     

基于ANSYS的铁路客车车体结构参数化研究

根据我国通用铁路客车车体钢结构的特点,基于大型有限元分析软件ANSYS,应用参数化程序设计语言APDL对铁路客车车体进行参数化建模,并采用TCL/TK语言为界面二次开发语言,实现ANSYS内部参数与对话框输入参数间的相互传递,更好地适应了人机交互。通过对话框调整车体结构相应参数,便可自动生成车体钢结构几何模型,大大缩短了设计周期,提高了设计效率,为后续快速进行有限元分析奠定了基础。     

Application of Moiré interferometry to reconstruction of residual stress in cut railroad car wheels

Railroad car wheels develop residual stresses both in their manufacture and while in service. Knowledge of the residual stress distribution and its variation over time is necessary for the prediction of wheel service life and possible catastrophic failure. It is also vital for the safety of railway transportation. Although a theoretical solution is possible, it remains complex. Alternatively, the solution may be also obtained by using experimental measurements assisted by the theory of mechanics. An approach known as “physically-based enhancement of experimental data” formulated and subsequently developed and tested is the best available experimental-numerical tool for the reconstruction of acquired residual hoop stress component in railroad car wheels. This paper presents the formulation, approach and results of the analysis performed on experimental data obtained from investigations of the passenger and freight wheels during a saw cutting process. A discussion on the precision of the results has been included.     

Automotive friction materials evolution during the past decade

Until the late 1960s, the U.S. passenger car and light truck automotive market used drum brakes on all four wheels and organic brake linings. In the late 1960s and early 1970s there was a transition to disc front-drum rear brake systems. Following these changes, which were still not fully settled, the past decade produced even more drastic changes. Beginning in the mid1970s, three important new requirements were imposed on the automotive industry: the Federal braking regulations, the need to eliminate asbestos from friction materials, and the conversion of the heavy vehicles to more energy-efficient lighter and smaller front wheel drive vehicles. These changes necessitated development of a new generation of friction materials. The changes in brake system configurations and the evolution of new friction materials which have occurred during the past decade or so to meet these new requirements are described in this paper.     

Modeling and optimization of characteristics of the conventional suspension of passenger car wheels

In this work we consider the rear conventional suspension of passenger car wheels. Two patterns of spatial suspension mechanisms are proposed. In addition, it is shown that the second pattern is more preferable. This work is aimed at optimizing the kinematic characteristics of the second pattern of the suspension mechanism. The results of optimization are given.     

运用网格法对汽车梯形转向机构的优化设计

汽车转向机构直接影响汽车操纵稳定性、安全性和轮胎使用寿命。优良的转向机构,可以使汽车转弯行驶时,车轮作无滑动的纯滚动运动,以减少轮胎磨损和动力消耗[1]。探讨高等机构学在乘用车梯形转向机构优化设计问题的应用,在基于空间机构的原理上所建立的模型能较为全面地反映汽车转向特性,以C型汽车为原型探讨了汽车前轮转向梯形机构的优化设计问题。     

Performance development target setting of passenger car diesel engine

Setting engine emission targets to meet diesel car requirements is particularly important in engine performance development phase. Many researches are focused on associating vehicle performance with engine targets, but most work is done by testing, which is time and cost consuming, furthermore, the relationship of vehicle and engine will change when either engine or vehicle changes. A GT-Drive model to simulate New European Driving Cycle (NEDC) for passenger car is developed and calibrated by testing data, model precision is controlled within 5%. Time distribution of engine operating conditions when car running NEDC cycle has been analyzed, 10 critical major engine operating points are summarized according to running time proportion. Emission of NOx and smoke control regions containing these 10 points for target engine are set. Vehicle emissions are simulated and evaluated during engine development after engine performance test data are got, and engine combustion system layout and calibration are adjusted until vehicle targets are met. Vehicle is tested in chassis dynamometer finally, the testing results show a good agreement with the simulated results with an error of less than 5%, which proves that the emission value exchange of vehicle and engine is reliable. Performance target decomposition method for passenger car diesel presented can greatly shorten the development cycle and save costs.     

基于正面耐撞性仿真的轿车车身材料轻量化研究

以某轿车为研究对象,运用显式有限元理论,建立整车有限元模型,基于“汽车正面碰撞乘员保护设计规则(CMVDR294)”的耐撞安全性仿真,从满足整车正面耐撞安全性能的角度,分别采用高强钢和铝合金对车身主要覆盖件进行轻量化研究,使车身减质量分别达9.31 kg和53.10 kg,减质量效果达到11.30%和64.50%。对整车变形、整车与刚性墙的碰撞力、运动速度和加速度、主要零部件吸能等方面进行分析、评价,数值仿真验证了轻量化方案的可行性。     

基于失效预防的乘用车车身验证试验规范开发策略研究

论述了失效预防和可靠性之间的关系。探讨了乘用车车身验证试验规范开发策略。阐述了基于失效预防的乘用车车身验证试验规范开发的过程,并对其主要内容要点进行了分析,列举了部分验证试验实例。最后得出模块化组合是开发乘用车车身可靠性验证试验规范应遵循的基本策略的结论。