The stress concentration at the root of the shed of cable terminal on the roof of high speed train may induce defects between the terminal interfaces. The existence of the interface defects will distort the electric field distribution and

in severe cases

will cause the cable terminal to burst. A fluid-structure calculation model is set up to simulate and analyze the influence of wind direction

installation mode and installation inclination angle on the deformation characteristics of the cable terminal shed

and the optimization measures to improve the stress and deformation are proposed. The simulation results show that both installation mode and wind speed affect the deformation of the cable terminal shed edge and the stress at the root of the shed. Under the same wind speed and when installed longitudinally

the deformation of the cable terminal shed in longitudinal installation is maximum. While

in horizontal installation mode

the influence of the installation inclination angle on the deformation and stress of the shed is not obvious. In the longitudinal installation mode

the installation inclination angle is in the range of 15°-25°

the maximum stress variation at the root of the shed is more obvious. Appropriately increasing the material hardness of the shed and installing a shroud on the roof of the train can reduce the deformation of the shed. The results in this paper can provide a reference for the installation method and structure optimization of the cable terminal on top of the train.