Thermo-stress coupling field of friction lining during high-speed slide of wire rope in a mine friction-drive hoist
Thermo-stress coupling field of friction lining during high-speed slide of wire rope in a mine friction-drive hoist
复制标题
矿井摩擦传动提升机钢丝绳高速滑动摩擦衬片热应力耦合场
DOI：
10.1177/0954406211430596
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发表时间：
2012-01-01
影响因子：
2
通讯作者：
Liu, Bin-bin
中科院分区：
文献类型：
--
作者：
Peng, Yu-xing;Zhu, Zhen-cai;Liu, Bin-bin
为了寻找某矿井提升机严重高速滑动事故的内在原因，对摩擦片高速滑动过程中的热应力耦合场进行了研究。首先，分析了螺旋接触特性。随后，研究了其热机械性能和动态线膨胀系数，得到了热机械本构关系。在此基础上，建立了考虑螺旋接触特性和热力学本构关系的热应力理论模型。此外，通过有限元分析进行了数值模拟。最后在摩擦试验机上进行了实验。结果表明，摩擦副在接触区Ⅱ温度最高，摩擦热主要集中在接触表面层。在0.5m/s时，应力的变化频率为6.98Hz。此外，应变和摩擦系数在3 m/s时出现突变。热应力集中发生在接触区II。实验结果与仿真结果吻合较好，验证了热应力理论模型的正确性。
In order to seek the intrinsic reason for the serious high-speed slide accident in a mine hoist, the thermo-stress coupling field of friction lining was studied during the high-speed slide. First, the helical contact characteristics were analysed. Subsequently, the thermomechanical properties and the dynamic coefficient of linear expansion were studied, and the thermomechanical constitutive relation was obtained. Then, the theoretical model of thermo-stress was established with the consideration of the helical contact characteristics and the thermomechanical constitutive relation. Also, the numerical simulation was performed by the finite element analysis. Finally, the experiment was carried out on a friction tester. It is found that the temperature is the highest at the contact zone II and the friction heat focuses on the contact surface layer. The variation frequency of the stress is 6.98 Hz at 0.5 m/s. Besides, the catastrophe for the strain and coefficient of friction occurs at 3 m/s. The thermo-stress concentration occurs at contact zone II. The experiment results agree with the simulation ones, which validates the theoretical model of thermo-stress.