在轴向应力加载情况下,铝合金的对接、搭接和T型接头以及在反复弯曲(簿板材料)加载情况下的对接接头的研究表明,疲劳强度主要受其几何物特性的影响。相对于载荷轴线的应力集中程度和对称性都有助于按下述次序减少所研究的接头的轴向应力疲劳强度。 Studies of butt joints, lap joints and T-joints of aluminum alloys and butt joints under repeated bending (book board material) loading under axial stress have shown that the fatigue strength is mainly affected by their geometric properties. The degree of stress concentration and symmetry with respect to the load axis all contribute to reducing the axial stress fatigue strength of the joint under study in the following order.