周向接触弧长对闸片温度场分布影响的研究

夏德茂; 奚鹰; 黎萍; 左建勇

doi:10.13433/j.cnki.1003-8728.2015.1220

周向接触弧长对闸片温度场分布影响的研究

doi: 10.13433/j.cnki.1003-8728.2015.1220

夏德茂¹,
奚鹰^1, ,,
黎萍¹,
左建勇²

1.
同济大学机械与能源工程学院, 上海 201804;
2.
同济大学铁道与城市轨道交通研究院, 上海 200331

基金项目:

国家自然科学基金项目(61004077)

详细信息

作者简介:
夏德茂(1986-),博士研究生,研究方向为摩擦制动器基础理论,xiademaonihao@163.com

通讯作者:
奚鹰(联系人),教授,博士,yingxi@tongji.edu.cn

计量
- 文章访问数: 133
- HTML全文浏览量: 19
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2013-12-16
- 刊出日期: 2015-12-05

Study on Effects of Circumferential Arc Length on Distribution of Temperature on Pad

1.
School of Mechanical Engineering, Tongji University, Shanghai 201804, China;
2.
Institute of Railway and Urban Mass Transit, Tongji University, Shanghai 200331, China

摘要

摘要: 提出了热流分配系数受摩擦副周向接触弧长影响的观点;使用分段二次插值法确定了摩擦副周向接触弧长和热流分配系数随径向位置的变化关系;基于能量守恒法,计算和比较了2种不同热载荷下闸片的温度及其分布规律。结果表明:周向接触弧长随径向位置呈先增大后减小的变化规律,而热流分配系数的变化趋势正好与其相反;由2种不同热载荷计算得到的温度峰值发生时刻虽接近,但差值较大;温度在径向和轴向方向上的分布规律也不相同。因此,在摩擦副的热分析过程中必须考虑闸片结构带来的影响。
- 周向接触弧长 /
- 热流分配系数 /
- 温度分布 /
- 闸片
Abstract: The viewpoint that heat partition coefficient affected by the circumferential contact arc length of the brake pair was brought forward. The circumferential contact arc length and the heat partition coefficient, which was changing with radial distance, were determined by quadratic interpolation function method. The temperature and its distributions of the brake pad were calculated and compared by two different thermal loads based on Energy Balance Law. The results show that the circumferential contact arc length will increase firstly and then decrease with the increase of radial distance, while the heat partition coefficient is in the opposite situation. Although the time when peak temperatures happen of two different thermal loads are almost the same, the temperature difference is high and it also has a different temperature distribution both in axial and radial direction of the pad. Therefore, the geometry of the brake pad must be taken into the consideration during the thermal analysis of brake pair.
- acceleration /
- boundary conditions /
- calculations /
- computer software

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参考文献(16)

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