关于标准载荷时间历程和标准载荷谱的生成问题(英文)

On Generation of Standardized Load-time Histories and Standardized Load Spectra

在应用海洋结构物疲劳寿命预报统一方法时,必须要输入载荷时间历程。在用疲劳寿命预报统一方法设计某个结构时,就需要提供某种标准类型的载荷时间历程。在文献中,标准载荷时间历程或标准载荷谱(均用缩写SLH表示)已经研究了30多年。人们普遍认识到使用SLH有一系列优点,不管是对研究或是应用而言。文章先从现在已经建立的标准载荷时间历程的综述开始,然后详细给出生成标准载荷时间历程或标准载荷谱的步骤,最后提供了一个示范计算的例子。

In the application of the Unified Fatigue Life Prediction （UFLP） method for marine structures, it is necessary to input a load-tlme history. For a structure to be designed using UFLP, some sort of standardized load-time history must be provided. In the literature, SLH （＇standardized loadtime histories＇ or ＇standardized load spectra＇） was developed for 30 years and it was recognized that using SLH provides a series of advantages -both for studies of a more generic nature and practical applications. This paper starts from an overview on SLH available at present, then it details the procedure on generation of the standardized load spectra and load-time history.Finally an example calculation is given to show the process.