王岳峰,姜宏伟,宁文钢,王建华.偏航制动摩擦片热力耦合计算及失效原因分析[J].表面技术,2018,47(2):111-116.
WANG Yue-feng,JIANG Hong-wei,NING Wen-gang,WANG Jian-hua.Thermo-mechanical Coupled Calculation and Failure Cause Analysis of Yaw Brake Friction Plate[J].Surface Technology,2018,47(2):111-116 |
| 偏航制动摩擦片热力耦合计算及失效原因分析 |
| Thermo-mechanical Coupled Calculation and Failure Cause Analysis of Yaw Brake Friction Plate |
| 投稿时间：2017-10-09 修订日期：2018-02-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.02.018 |
| 中文关键词: 制动 摩擦片有限元 耦合 温度场 应力场 |
| 英文关键词:braking friction plate finite element coupling temperature field stress field |
| 基金项目:山西省重点研发计划项目（201603D111017） |
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| 中文摘要: |
| 目的 结合摩擦片的失效原因，分析偏航制动摩擦片的接触面受力情况。方法 利用有限元法建立制动盘和制动器摩擦片的热力耦合接触模型，设置摩擦片和制动盘的参数和材料性能，研究不同压力、滑动速度、摩擦系数和环境温度下的制动器摩擦片应力和温度的分布情况。结果 得到了偏航压力、滑动速度、摩擦系数、环境温度对制动器摩擦片接触面的等效米塞斯应力和温度分布曲线，摩擦片两侧区域属于等效应力和温度分布的交变集中区，但靠近边缘，等效应力和温度值略微减小。适当减小压力，增大滑动速度，减小摩擦系数，有助于减小摩擦片接触面的等效米塞斯应力分布，温度对摩擦片接触面的等效米塞斯应力分布基本无影响。得到了摩擦片接触面等效米塞斯应力和温度场与接触面位置的高斯分布曲线方程。通过将制动器摩擦片磨损失效照片和文中计算数据进行对比，验证了有限元分析的正确性。结论 通过合理选择偏航压力、滑动速度、摩擦系数，可以有效地缓解偏航制动器摩擦片的等效应力和温度分布的交变集中区，进而达到延长摩擦片使用寿命的目的。 |
| 英文摘要: |
| The work aims to analyze force conditions on contact surface of yaw brake friction plate by referring to failure reason of the friction plate. Thermo-mechanical coupled contact model of brake disc and brake friction plate was established in finite element method. Parameters and material performance of the friction disc and brake disc were set. Stress and temperature distribution of the brake friction plate was studied provided with different pressure, sliding speed, friction coefficient and ambient temperature. Equivalent Mises stress and temperature distribution curves of the contact surface on the brake friction plate were obtained provided with yaw pressure, sliding speed, friction coefficient and ambient temperature. Both sides of the friction plate belonged to an alternating stress concentration zone of equivalent stress and temperature distribution, but were near edges, and equivalent stress and temperature values decreased slightly. Reducing pressure, increasing sliding speed and reducing friction coefficient helped reducing the equivalent Mises stress distribution of contact surface on friction plate. Temperature had no effect on the equivalent Mises stress distribution of contact surface on friction plate. Gauss distribution curve equation involving the equivalent Mises stress & temperature field and contact surface position of contact surface on friction plate was obtained. Correctness of finite element analysis was verified by comparing wear failure photos of the brake friction plate with calculating data in this paper. By choosing reasonable yaw pressure, sliding speed and friction coefficient, an alternating stress concentration zone of equivalent stress and temperature distribution can be effectively relieved for yaw brake friction plate, and service life of the friction plate can be prolonged. |
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