吊钩在连续加载的情况下,从开始承受荷重直到最后破坏,其受力和变形过程可分为三个阶段,即弹性阶段、屈服阶段和强化阶段。吊钩从开始承受荷重直到其危险截面的最大应力点开始屈服的阶段称为弹性阶段。吊钩危险 Under continuous load, the load-bearing and deforming process of the hook can be divided into three stages, that is, the elastic stage, the yield stage and the strengthening stage. The stage at which the hook begins to yield from the point at which the load begins to bear until the point of maximum stress at its dangerous section is called the elastic stage. Hook danger