Non-Gaussian frequency domain fatigue damage estimation method and system

The invention provides a non-Gaussian frequency domain fatigue damage estimation method and system, and belongs to the field of fatigue damage assessment, and the method comprises the steps: obtaining the stress response power spectrum density of a target engineering structural component; and performing non-Gaussian frequency domain fatigue damage estimation on the target engineering structural component based on the stress response power spectral density, the kurtosis and the skewness to obtain a non-Gaussian process fatigue damage estimation result. According to the method, non-Gaussian frequency domain fatigue damage estimation is carried out on the stress power spectral density of the target engineering structural component, so that the method can be more flexibly adapted to fatigue performance characteristics of different materials or structures, and a more accurate and reliable fatigue damage prediction result is provided. 本发明提供了一种非高斯频域疲劳损伤估计方法与系统，属于疲劳损伤评估领域，其中该方法包括：获取目标工程结构部件的应力响应功率谱密度；基于所述应力响应功率谱密度、峰度