针对两圆柱体接触的情况，假设接触光滑无摩擦，且圆柱体作用力沿轴向分布，因此可将问题简化为平面应力问题。根据 Hertz 接触理论，两圆柱体接触区域存在弹性形变，压应力呈半椭圆分布，接触压应力于接触面中部最大

For the contact of two cylinders, it is assumed that the contact is smooth and friction-free, and the cylinder force is distributed along the axial direction, so the problem can be simplified as a plane stress problem. According to Hertz contact theory, there is elastic deformation in the contact area of two cylinders, the compressive stress is semi-elliptical, and the contact compressive stress is the largest in the middle of the contact surface.