Abstract
The type of disc brake has excellent efficiency and strong heat dissipation, which are beneficial to the transport capacity for mining motor vehicles. To ensure the reliability of the brake, the two-dimensional heat transfer differential equation model of disc brake is established, considering the dynamic change of convective heat transfer coefficient. The heat boundary conditions are established through the characteristics of brake disc structure and air condition, which is more accuracy than the traditional simplified method. Based on the PDE module in MATLAB, the mathematical model of heat transfer is solved and the transient temperature field is obtained. The calculation results are verified by the temperature field of the brake disc Link3900 NVH test platform. The results show that the research scheme has high computation accuracy, and can provide important basis, new ideas and advanced methods for the brake of mining motor vehicle in related fields.
Highlights
The traditional type of mining motor vehicle brake is shoe-brake structure, of which contact and separation is realized through the transmission of the hand wheel linkage mechanism [1]
The temperature field of disc brake is very small in the circumferential direction, so the heat transfer problem can be transformed to a two-dimensional transient mathematical model under the condition of cylindrical coordinate system
In order to improve the efficiency of solving the unsteady heat transfer equation, the PDE module of MATLAB is used to deal with the partial differential equation
Summary
The traditional type of mining motor vehicle brake is shoe-brake structure, of which contact and separation is realized through the transmission of the hand wheel linkage mechanism [1]. This type of brake mode has strong mechanical reliability and low cost, but the response time of the brake is longer, about 2-5 seconds. RESEARCH ON TRANSIENT HEAT TRANSFER PERFORMANCE OF DISC BRAKES FOR MINING MOTOR VEHICLE. A PDE based transient heat transfer calculation method for disc brake of mining motor vehicle is presented in this paper. The influence of convective heat transfer on heat transfer characteristics is considered accurately, and the accuracy of temperature field is verified by bench test
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