By means of the equivalent nonlinear system met hod, the analytical solution of the joint probability density function of steady- state responses of Coulomb sliding friction rigid structures to vertical Gauss ian white noises is derived.

• 运用等效非线性系统法推导了库伦摩擦刚性滑移结构在竖向高斯白噪声地面作用下响应的稳态合概率密度函数的解析解。