Transactions of Nanjing University of Aeronautics & Astronautics
Dynamic Characteristics of a New Electrical Toothed Band Brake
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Abstract:
A new electrical toothed band brake is proposed based on the planetary gear shifting transmission. The corresponding mathematical model and the finite element model are established to investigate the braking dynamic characteristics and the stress distribution of brake components. According to the structural features and working principle of the brake， the braking process can be divided into a gap elimination stage， a sliding stage， a meshing stage， and a collision stage. The greater the initial speed of brake drum， the higher the impact torque in the collision stage， and the larger the stress of brake components. The ideal range of initial speed is 50—100 r/min， and the ultimate stress is 514 MPa appeared in the right brake band. This study present a wide range of possibilities for further investigation and application of the electrical toothed band brake.
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Project Supported:
This work was funded by the National Natural Science Foundation of China （Nos.52205047， 52175037）， China Postdoctoral Science Foundation （No. 2021M700422）， and Beijing Key Laboratory Foundation （No.KF20212223201）.
Clc Number:
U463.2
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