The allowable strength, static strength, fatigue life and load-carrying capability of hydro-bulged rear axle housing in a 0.75 t truck are analyzed using FEA software ANSYS and the variation rule of its strength is obtained.

• 摘要以0.；75t货车液压胀形桥壳为例，利用有限元分析软件ANSYS对其许用强度、静强度、疲劳强度（寿命）及其承载能力进行分析，得到液压胀形桥壳强度的变化规律。