Drag characteristic prediction system of wet brakes with heavy-duty and off-roadChinese Full Text
LuoTianhong;Li Fuying;Li Chunhong;Huang Xinggang;Department of Mechanical-Electrical and Automotive Engineering,Chongqing Jiaotong University;Chongqing Dajiang Xinda Vehicle Company Limited;
Abstract: The wet multiple of disc brake（WMDB）in mining engineering truck′s drive axle was studied to enhance the characteristics of WMDB.A prediction system specific to the drag characteristics phenomenon during in wet brake non-engagement was established,considering the surface grooves effect,film shrinkage and laminar N-S equations as factors.The prediction system was built up to understand drag torque and temperature′s variation of wet brake at different volume flow,dynamic viscosity and friction pair clearance.The results indicated that when the friction pair gap is under variable circumstance,the larger friction pair gap of predictive models feature,the lower peak torque; when the volume is variable,the peak torque rises with an increasing volume flow of torque prediction model;when the cooling liquid viscosity is dynamic,the peak torque increases as the torque prediction model coolant dynamic viscosity is greater.
Keywords：
mining engineering truck; wet brakes; drag characteristic; torque; temperature; prediction;
- DOI：
10.13245/j.hust.140510
- Series：
- Subject：
- Classification Code：
U463.512;TU621
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