The Laplace multi-axial response model for fatigue analysis
Journal article, 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

University of Gothenburg

Chalmers, Mathematical Sciences, Mathematical Statistics

International Journal of Fatigue

0142-1123 (ISSN)

Vol. 85 11-17

Driving Forces

Sustainable development

Areas of Advance


Subject Categories

Reliability and Maintenance

Probability Theory and Statistics



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