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包装总是承受着一些在运输过程中的损伤,W?hler曲线通常用来确定一个包装系统的机械磨损演变。损伤估算可以用雨流法进行,但应力要求连续记录。然而,进行连续记录是不可能的,所以以全球运输振动的功率谱密度(PSD)为代表进行记录是适合的。本文根据W?hler曲线系统的损伤进行研究。Basquin模型被用来确定系统的机械磨损和机械行为的演化,通过从W?hler曲线中提取Basquinβ系数和常数系统C建立模型。W?hler曲线进一步体现包装系统的数据变化,及其Basquin系数B和系统常数C进行提取。损伤估算所积累的应力循环,利用Palmgren Miner规则进行排列重组,形成规律模型。在本文中,在一个信号中检测到的周期最大峰值,它的最大应力出现概率密度也由一个多元高斯模型体现。协会有相同的统计特性所对应时间的事件,因此这些统计特性可被用来提取谱矩法。此外,损伤方程提出了采用PSD,并由不同的月台幕门损伤方程确定,与振动台的实际持续时间进行比较,得出更精准的结果。
Packaging always suffers from some damage during transport. The Wöhler curve is usually used to determine the mechanical wear evolution of a packaging system. Damage estimates can be made using rain-flow methods, but stress requires continuous recording. However, it is not possible to perform continuous recording, so recording as typified by the power spectral density (PSD) of global transport vibrations is suitable. In this paper, W hler curve system damage study. The Basquin model was used to determine the mechanical wear of the system and the evolution of mechanical behavior by modeling the Basquin β coefficients and the constant system C from the Wöhler curve. The Wöhler curve further reflects the data changes in the packaging system and extracts the Basquin coefficient B and the system constant C. The damage cycle is estimated by accumulating stress cycles, using the Palmgren Miner rule to rearrange and recombine to form a regular model. In this paper, the maximum peak period detected in a signal and the maximum probability density of its occurrence are also represented by a multivariate Gaussian model. Associations have events of the same statistical nature corresponding to time, so these statistical properties can be used to extract spectral moments. In addition, the damage equation is proposed using the PSD, which is determined by the different curtain curtain damage equation of the platform and compared with the actual duration of the shaking table to obtain more accurate results.