The Laplace multi-axial response model for fatigue analysis
Artikel i vetenskaplig tidskrift, 2016

This paper introduces means for fatigue damage rates estimation using Laplace distributed multiaxial loads. The model is suitable for description of stresses containing transients of random amplitudes and locations. Explicit formulas for computing the expected value of rainflow damage index as a function of excess kurtosis are given for correlated loads. A Laplace model is used to describe variability of forces and bending moments measured at some location on a cultivator frame. An example of actual cultivator data is used to illustrate the model and demonstrate the accuracy of damage index prediction.

Laplace moving averages

Rainflow method

Spectral density function

Multi-axial loads

Random loading


Karlsson Johan

Podgorski Krzysztof

Igor Rychlik

Göteborgs universitet

Chalmers, Matematiska vetenskaper, matematisk statistik

International Journal of Fatigue

0142-1123 (ISSN)

Vol. 85 11-17


Hållbar utveckling




Tillförlitlighets- och kvalitetsteknik

Sannolikhetsteori och statistik