designlifetheory.pdf
疲劳理论文档，自取
节选段落一：
.
From PSD loadings, a local response PSD is calculated as an intermediate
step, and statistical methods are used to predict the probability density
function (PDF) of stress range, and hence the rainflow count.节选段落二：
There are a number of different theories for the prediction of the PDF of stress
range. All of these assume that the process (stress history) represented by the
PSD of stress is stationary, random, Gaussian and ergodic.节选段落三：
Dirlik
Dirlik proposed an empirical closed form solution to estimate the pdf of stress
range N(S), following extensive computer simulations using the Monte Carlo
technique and different signals.
.
From PSD loadings, a local response PSD is calculated as an intermediate
step, and statistical methods are used to predict the probability density
function (PDF) of stress range, and hence the rainflow count.节选段落二：
There are a number of different theories for the prediction of the PDF of stress
range. All of these assume that the process (stress history) represented by the
PSD of stress is stationary, random, Gaussian and ergodic.节选段落三：
Dirlik
Dirlik proposed an empirical closed form solution to estimate the pdf of stress
range N(S), following extensive computer simulations using the Monte Carlo
technique and different signals.
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