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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical analysis of novel SiC_(3D)/Al alloy co-continuous composites ventilated brake disc
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Numerical analysis of novel SiC_(3D)/Al alloy co-continuous composites ventilated brake disc

机译：新型SiC_（3D）/铝合金共连续复合材料通风制动盘的数值分析

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摘要

A novel ventilated shaft brake disc prepared by SiC_(3D)/Al alloy co-continuous composites (SiC_(3D)/Al, 3D means three-dimensional network structure) was presented in this study, which can effectively reduce the unspring weight of high-speed trains. The innovative concept is based on the use of a high temperature and low wear SiC foam material fill with a metal alloy, able either to improve friction and wear properties and to transmit, with a very high flow rate, the heat produced on the friction surface. In order to identify the geometric design and used material of this brake disc and secure braking stability, the numerical thermal and thermal stress investigations considering air cooling during emergency braking phase at the speed of 350 km/h were carried out using finite element (FE) and computational fluid dynamics (CFD) methods. The results showed that low temperature was obtained, as well as distributed uniformly on the brake disc, which attributes to high thermal conductivity of the disc material together with excellent cooling ability of the brake disc. During the braking phase, maximum thermal stress is 186.44MPa, at 30 s, but the highest temperature is 471.08 °C, at 70s, they behaved inconsistently in time. The maximum thermal stress is lower than the permitted stress of the disc material. The simulation results are consistent with the experimental dates well. The brake disc can meet the requirement of highspeed trains at 350 km/h.
机译：提出了一种由SiC_（3D）/铝合金共连续复合材料（SiC_（3D）/ Al，3D表示三维网络结构）制成的新型通风轴制动盘，可以有效减轻高重弹簧的弹簧重量高速火车。创新概念基于使用填充金属合金的高温低磨损SiC泡沫材料，能够改善摩擦和磨损性能，并以很高的流量传递在摩擦表面产生的热量。为了确定该制动盘的几何设计和使用材料并确保制动稳定性，使用有限元（FE）进行了在紧急制动阶段以350 km / h的速度进行空气冷却的数值热和热应力研究。和计算流体动力学（CFD）方法。结果表明，获得了低温并且均匀地分布在制动盘上，这归因于盘材料的高导热率以及优异的制动盘冷却能力。在制动阶段，在30 s时最大热应力为186.44 MPa，但在70 s时最高温度为471.08°C，它们在时间上的表现不一致。最大热应力低于盘材料的允许应力。仿真结果与实验数据吻合良好。制动盘可以满足350 km / h高速列车的要求。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2017年第2017期|1374-1382|共9页
  • 作者

    X.D. Nong; Y.L. Jiang; M. Fang; L. Yu; C.Y. Liu;

  • 作者单位

    Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China;

    Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China;

    Zhejiang Tianle New Material Technologic Co. Ltd, Shengzhou 312400, China;

    Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China,Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, Guilin 541004, China,Guangxi Key Laboratory of Universities for Clean Metallurgy and Comprehensive Utilization of Non-ferrous Metal Resources, Guilin 541004, Guangxi, China;

    Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Brake disc; Composites; Ventilated structure; Numerical analysis; Cooling ability; Thermal stress;

    机译：制动盘复合材料;通风结构;数值分析;散热能力;热应力;

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