摘要：对于铁路行业而言轨道是其最为重要的基础设施，轨道的质量直接影响着轮轨系统及列车的振动情况。轨道的平顺性问题是铁路行业不可忽视的关键性的问题。因此在对列车的动力学性能进行分析研究时也必须考虑到轨道不平顺这一不可忽视的问题。本文的主要内容是通过SIMPACK软件进行建模加入国外典型轨道谱对客车模型进行平稳性、安全性及舒适性方面的分析。

首先介绍了国内外有关于这一方面的一些研究现状，然后介绍了有关于轨道不平顺的形成原因、影响及分类。此后引入了轨道不平顺功率谱及功率谱密度等概念来反映轨道不平顺的随机特性，并介绍了一些国内外的典型的轨道谱激扰。然后利用SIMPACK软件进行建模，轨道激励选择美国AAR1级到AAR6级和德国高干扰谱及低干扰谱来研究在这些激扰干扰作用下的轨道上运行时得到的数据图来分析在这些轨道不平顺下的客车模型的动力学性能，从平稳性、安全性及舒适性三方面展开。分析发现美国六个级别的轨道谱中AAR6级谱各方面都更优，而德国低干扰谱优于高干扰谱。62085

毕业论文关键词：轨道不平顺；SIMPACK；平稳性；安全性；舒适性

Train Dynamics Performance Reserch Under The Track Irregularities

Abstract:Orbit for railway industry is the most important infrastructure, the quality of the track directly affects the wheel/rail system and the vibration of the train. Smooth trajectory problem is the core of the railway industry cannot be ignored. So the study of dynamic performance under track irregularity is of great significance. The main content of this paper is through the SIM-PACK software modeling to join the foreign typical track spectrum analysis of  the Stability, safety and comfort.

Firstly introduces some research on this aspect both at home and abroad, then introduces about the reasons for the formation of track irregularity, influence and classification. Due to randomness of orbital uneven, so introduce the track irregularity power spectrum and power spectral density of concept, then introduce some typical track spectrum of turbulence at home and abroad. Then using SIMPACK software modeling, Orbit incentive to choose the high class AAR1 to AAR6 and Germany spectrum interference spectrum and low interference to Re-search under the effect of the turbulence disturbance of orbit when the data chart to analysis under the track irregularities of passenger car dynamic performance of the model from three as-pects as stability, safety and comfort. Analysis found that the six grade level of the orbital spec-trum AAR6 spectrum has better aspects, and low interference spectrum is better than that of high interference spectrum in Germany.

Key  Words: Track irregularity；SIMPACK； Stability； Security； Travelling comfort

1绪论 1

1.1课题选题背景 1

1.2本课题的目的及意义 1

1.3国内外研究现状 1

1.4本文主要内容 2

2  轨道不平顺 4

2.1轨道不平顺的概述 4

2.1.1轨道不平顺简述 4

2.1.2轨道不平顺原因及影响 4

2.1.3轨道不平顺分类 5

2.1.4轨道不平顺特征 7

2.2功率谱密度 7

2.2.1功率谱的定义 7

2.2.2功率谱提供的信息及用途 7