拉伸载荷下双销式履带板强度计算方法

Tensile load is one of the main loads on the track of armored vehicles and also an important working condition for strength calculation, but the distribution of tensile load at the connecting parts of the track is not clear. To figure out the load distribution ratio of double-pin track shoes under tensile load, single and double-shoe track tensile experiments and simulations of a certain type of armored vehicle track shoes were carried out, the difference in load distribution and stress when different numbers of track shoes were subjected to tensile load were discussed. The iterative calculation of the finite element method was used to figure out the results of stable load distribution when the track was stretched, and a two-step method to quickly calculate the stable load distribution of the track shoes was proposed. The results showed that: the tensile load distribution of the track shoes changes with the increase of the number of the track shoes; when the number of the track shoes is large enough, the load distribution of the end coupling and the guide tooth tends to have the distribution ratio of 1:2:1; the change of the number of tracks in the tensile test has some influence on the maximum stress on the track shoe and the deflection of the track pin, which should be considered in the tensile strength test of the track.