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风力发电机主轴制动器摩擦副温度场分析
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江西省教育厅科技项目(12716);江西省科技厅科技计划项目(20141BDH80021).


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    摘要:

    基于有限元软件ANSYS建立某大型风电主轴制动器的三维有限元模型,运用参数化语言APDL进行编程,实现热载荷的循环施加,并对正常工况和紧急工况下制动盘温度场进行数值计算。结果表明,制动盘温度分布不均匀,摩擦区域温度呈现锯齿状波动,从而产生热冲击;制动盘表面摩擦区域各处温度最高点约处于制动过程的3/5段,紧急工况温度大大高于正常工况;制动结束后摩擦热向非摩擦区移动,摩擦区轴向温度趋于一致,而非摩擦区轴向上内部温度大于表面温度。

    Abstract:

    The three-dimensional finite element model of spindle brake of a large-scale wind turbine was built based on the finite software ANSYS.The thermal load was applied in repetition using parametric design language APDL.The numerical computation of temperature field of brake disc under normal operation and emergency conditions were completed.The results show that the temperature distribution of brake disc is not uniform,and temperature of disc surface in friction area is fluctuated in the jagged with thermal shock.The highest temperature of friction on surface appears approximately in 3/5 braking process,and the temperature in emergency conditions is much higher than that in normal operation. After the end of the brake,the friction heat is moving towards non-friction area from friction area,and the axial temperature in friction area tends to be consistent,while,the inner temperature in non-friction area is higher than the surface temperature in axial direction.

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刘 莹,胡育勇,宋 涛,杜军华,杨鹤清.风力发电机主轴制动器摩擦副温度场分析[J].润滑与密封,2015,40(3):35-39.
.[J]. Lubrication Engineering,2015,40(3):35-39.

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  • 在线发布日期: 2015-04-27
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