利用车辆数据建立ATC特性检查的研究

随着新一代高速列车技术的发展,获取车辆数据的功能大幅提高,为地面车辆数据分析中心开展列车设备状态监控创造了条件.介绍日本东海铁路客运公司利用车辆数据确立最佳的ATC特性检查体制的概况、具体研究内容及取得的成果,指出通过利用车辆数据替代部分检查,可提高检查频度、精度并缩短检查时间.     

俄罗斯自动车钩缓冲器结构

在对既有缓冲器结构进行分级评估的基础上,研制出了铁道车辆用ПМКП-110型新的冲击式缓冲器和ЭПА-120型大容量弹性胶泥缓冲器.     

铁路用液压和气动设备的创新密封技术

在铁路行业中,如若不提高安装在气动和液压仪器设备中的密封件的可靠性和使用寿命,则想要改进它们的工作特性和降低生命周期成本的任务是不可能完成的.尽管密封件的成本不高,但是它们对最终产品可靠性的贡献是十分巨大的.通常,密封状态是确定运行装置无修理走行里程的决定性判据.正因为如此,采用先进的密封材料和密封部件的结构,以及在密...     

Texture Development of a Cold-rolled CuZnAl Alloy

lIntroductionTheCu26Zn-5Al-0.7Ti(wt%)allOysareshaPeIneInOryalloys.PolytwstallineshaPempalloysareingeneralusedinengineeringaPPlicatons.TheshapempeffectsarecloselyrelatedwiththetextUresforthesing1ecrystalshavetheshmplyanisotrOPicPfOPetw[l-3].ItwasshownthatextUredshaPempal1oyspossessedthebettershaPememOryeffectsthannontextUrdones[4].Cu-basedallOystendeasilytOgrowintolnyegrainsinhotrolling,andarenosultabletocoldrollingbecausethe0PhasehasalowmalleabilityatroomtemperatUre.FortheCuZnAlal…     

新型商用车燃料电池驱动装置

将燃料电池用作动力装直有利于商用车技术的发展。燃料电池在续航里程和充电时间等方面明显优于传统蓄电池。为了实现相关技术的推广,必须进一步降低成本。     

欧洲客车设计案例剖析--伊利萨尔客车

旅游客车制造业是一个既专业又特殊的行业。乍一看,它理应归属于汽车制造业;但从产品的实际情形以及相对较小的年产量来看,它又应归属于手工艺品行业;在这里可以看到,机械制造结合了手工艺,汽车造型融入了建筑艺术。这篇文章概述了伊利萨尔旅游客车的设计过程:从与客户的第一次     

采用铝热喷涂反刺薄壁铸铁缸套的全新1.4 L发动机开发

为了实现发动机气缸体的紧凑性与轻量化,开发了外侧带反刺的全新铸铁缸套。同时对外壁喷涂铝,以增强导热性,并提高缸套与气缸体之间的结合力。无须重新设计气缸体和曲轴,仅通过采用新的缸套,发动机的排量可由1.25 L增大到1.4 L。新缸套增加了排量,但在外形尺寸和生产设施方面均无重大变更。     

基于ARCGIS技术在工程水文分析计算中的应用——以克孜河卡拉贝利水库水文分析计算为例

ARCGIS具有强大的空间数据和属性数据的处理能力,将ARCGIS技术运工程水文分析计算中,不但可以减少大量繁琐的计算工作,而且可以大大提高计算速度和准确度。以克孜河卡拉贝利水库水文分析计算为例,探讨了ARCGIS技术在工程水文领域中的应用。     

多弹性支撑设备的同步定相振动控制研究（英文）

This paper describes an analytical investigation into synchrophasing, a vibration control strategy on a machinery installation in which two rotational machines are attached to a beam-like raft by discrete resilient isolators. Forces and moments introduced by sources are considered, which effectively represent a practical engineering system. Adjusting the relative phase angle between the machines has been theoretically demonstrated to greatly reduce the cost function, which is defined as the sum of velocity squares of attaching points on the raft at each frequency of interest. The effect of the position of the machine is also investigated. Results show that altering the position of the secondary source may cause a slight change to the mode shape of the composite system and therefore change the optimum phase between the two machines. Although the analysis is based on a one-dimensional Euler–Bernoulli beam and each machine is considered as a rigid-body, a key principle can be derived from the results. However, the factors that can influence the synchrophasing control performance would become coupled and highly complicated. This condition has to be considered in practice.