The random response of the non-linear system with parameter at random under the determinate load are studied by using the perturbation law and central differential dividing law.

• 摘要应用摄动法和随机中心差分法，研究了具有随机参数的非线性系统在确定性荷载下的随机响应，得到了均方响应的一种近似迭代关系。