Abstract: As a key component of the transmission line, the ball head hanging ring has great effects
on the safety of transmission. In order to optimize the ball head hanging ring, under the action of the
horizontal force along the wind direction, the nonlinear static simulation analysis of the ball head
hanging ring was simulated through the finite element analysis, using the commercial software
Abaqus. Two contact models for ball head hanging rings of different sizes, different grid densities,
and different contact surface widths were established, with the contact type being face-to-face. The
rules of influences of ring size, grid density and contact surface width on the maximum stress were
discussed. According to the results, in the cases of different grid densities, the contact width and
maximum stress of the two types of ball head hanging rings are almost the same. As the contact width
increases, the maximum stress tends to decrease, which can be roughly divided into the rapid descent
area, slow descent area, and stable area. In the stable area, the maximum stress and fluctuation range
are small, which can be used as the ideal contact width of the ball head hanging ring, thus providing
theoretical guidance for the optimal design of ball head hanging rings in the future.

Key words: contact model, ball head hanging ring, width of contact surface, maximum stress, finite
element analysis