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提出一种改进的求解多自由度非线性随机振动问题的高斯闭合法,解决了一般高斯闭合法自谱有时会出现负值的矛盾,并能得到等效线性化法所得不到的某些频域信息.用此方法分析了装有非线性减振器风力灭火机车辆系统的振动.
An improved Gaussian closure method for multi-degree-of-freedom nonlinear random vibration problems is proposed. The contradiction between negative Gaussian closed-loop self-spectrum and negative frequency is solved. Some frequencies that cannot be obtained by equivalent linearization can be obtained. Domain information. This method was used to analyze the vibration of a vehicle system equipped with a non-linear damper.