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铁道车辆振动控制技术--有源与半有源悬挂分析 总被引:2,自引:0,他引:2
分析利用有源悬挂和半有源悬挂方法对铁道车辆振动控制的原理和技术。对日本最新型700系列高速列车上采用的可变阻尼减振器进行研究分析,认为其基本原理是通过高速电磁阀切换阻尼孔(节流孔),从而改变减振器的阻尼力达到控制振动的目的。指出在隧道内,车体的横向振动加速度可减少30%左右。介绍日本新开发的可以自动调整动力学性能的减震器的进展情况。给出横向用可变阻尼减振器和垂向用可变阻尼减振器内藏型空气弹簧的结构和特点。 相似文献
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Noise and vibration are two of the main problems associated with railways in residential areas. To ensure quality of life and well-being of inhabitants living in the vicinity of railway paths, it is important to evaluate, understand, control and regulate railway noise and vibration. Much attention has been focused on the impact of noise from railway traffic but the consideration of railway-induced vibration has often been neglected. This paper aims to provide policy guidance based on results obtained from the analyses of relationships estimated from ordinal logit models between human response, railway noise exposure and railway vibration exposure. This was achieved using data from case studies comprised of face-to-face interviews (N = 931), internal vibration measurements (N = 755), and noise calculations (N = 688) collected within the study “Human Response to Vibration in Residential Environments” by the University of Salford, UK. Firstly, the implications of neglecting vibration in railway noise policies are investigated. The findings suggest that it is important to account for railway induced vibrations in future noise and transport policies, as neglecting vibrations results in an underestimation of people highly annoyed by noise. Secondly, implications of neglecting different types of railway sources are presented. It was found that the impact of noise and vibration form maintenance operations should be better understood and should be taken into account when assessing the environmental impact of railways in residential environments. Finally, factors that were found to influence railway vibration annoyance are presented and expressed as weightings. The data shows that factors specific to a particular residential area should also be taken into account in future vibration policies as the literature shows that attitudinal, socio-demographic and situational factors have a large influence on vibration annoyance responses. This work will be of interest to researchers and environmental health practitioners involved in the assessment of vibration complaints, as well as to policy makers, planners and consultants involved in the design of buildings and railways. 相似文献
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对柱壳隔振系统动力学特性进行的研究,以往常建立在刚体模型的基础上,这是导致振动预报与实测间存在较大误差的主要原因。从基于有限元分析的弹性体模型出发,本文对涉及柱壳隔振系统动力学特性的结构与材料方案进行了模拟激励下的响应分析与灵敏度分析,讨论了其中的各种影响因素。通过实物模型试验,验证了已建立的动力学模型,探讨了有关柱壳隔振系统设计的中的一些重要方面。 相似文献
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论述了全封闭型舰艇空调通风系统通常的主要特点及适宜采用的相应设计,概述了空调通风系统减振噪的研究设计和综合治理,并以某舰为例列述了各项设计的实船效果。 相似文献
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