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本文在考虑了支承随机运动干扰的模糊性和结构随机振动反应允许界限模糊性的基础上,提出了多自由度非线性结构体系模糊动力可靠性的一般计算方法。文中提出了支承随机运动干扰的强度等级和谱密度形状类别模糊子集的评定方法,寻得了考虑界限模糊性的体系动力可靠性的计算公式,并最终得到了非线性结构体系模糊动力可靠性的评定方法。更合理地解决了非线性体系在支承随机运动干扰下的安全估计问题。
In this paper, on the basis of considering the ambiguity of the random motion disturbance and the allowable boundary ambiguity of the structure random vibration response, a general calculation method for the fuzzy dynamic reliability of the multi-degree-of-freedom nonlinear structural system is proposed. This paper proposes a method for evaluating the fuzzy subsets of intensity classes and spectral density shape categories supporting random motion disturbances. The formula for the dynamic reliability of the system considering the boundary ambiguity is found, and the nonlinear dynamical system reliability is finally obtained. Evaluation method. A more reasonable solution to the problem of non-linear system safety estimation under the support of random motion disturbance.