When the valid strain concentration factor is 1.3,the fatigue life calculated with the Coffin-Manson equation is conformant to the fatigue life from test rigs.

• 当取有效应变集中系数为1.；3时；根据Coffin-Manson公式；运用PALIO后桥用钢的应变疲劳性能计算得到的疲劳寿命与实际台架疲劳寿命相符。