齿板啮合连接强度影响因素研究

Study on Impact Factors of Joint Strength for Serrated Plate Connectors

对铝合金齿板啮合连接强度及影响因素进行了实验研究与有限元分析。研究结果表明:当齿数较少时,齿板啮合连接强度随着齿数的增多而近似线性增大,当齿数较多时,随着齿数增加,齿板啮合连接强度增大趋势渐缓;齿板啮合连接强度随着齿高或齿宽的增大而近似线性增大,同时,随着螺栓预紧力的增大,齿板啮合连接强度呈现先增大后减小的趋势,因此,实际工程中需选择合适的螺栓预紧力,以提高结构连接强度。

The joint strength and the impact factors in terms of the serrated plate connectors were researched through experiments and FEM analyses. The results indicate that for the less amount of teeth, the joint strength increases almost linearly with the rise of the tooth number. However, for the large amount of teeth, the joint strength augments slowly. Besides, the joint strength raises nearly linearly with the increases of tooth heights as well as the tooth widths. With the increasing pretension forces, the joint strength tends towards augmenting initially and then deteriorates, which implies that the proper pretension force should be selected to improve the joint strength in practical engineering.