应用光弹性法研究了类似特殊螺纹连接的弹性体平面多点接触问题,探索了平面多点接触问题的光弹性模型的制作技术和试验方法,并研究了在轴向拉伸载荷作用下齿的接触压力和模型内部的应力分布规律.结果表明,在轴向拉伸载荷作用下,齿的接触压力沿轴向呈对称分布,内部应力主要是由弯曲引起的轴向拉应力. The photoelastic method was used to study the problem of planar multi-point contact of elastic body with special screw connections. The fabrication technology and test method of photoelastic model for multi-point contact problem were explored. The effect of tooth under axial tensile load Contact pressure and the stress distribution in the model.The results show that under the axial tensile load, the contact pressure of teeth is symmetrically distributed in the axial direction, and the internal stress is mainly axial tensile stress caused by bending.