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The Laplace multi-axial response model for fatigue analysis

Karlsson, Johan; Podgorski, Krzysztof LU and Rychlik, Igor (2015) In Working Papers in Statistics
Abstract
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 ona cultivator frame. An example of actual cultivator data is used to illustrate the model and demonstrate the accuracy of damage index prediction.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Working Paper
publication status
published
subject
keywords
Laplace moving averages, multi-axial loads, rainflow method, random loading, spectral density function
in
Working Papers in Statistics
issue
8
pages
13 pages
publisher
Department of Statistics, Lund university
language
English
LU publication?
yes
id
c570708d-21d1-4ea4-9cb8-13b14bd9c75e (old id 8052673)
alternative location
http://journals.lub.lu.se/index.php/stat/article/view/15039
date added to LUP
2015-10-07 13:40:33
date last changed
2017-09-12 12:48:04
@misc{c570708d-21d1-4ea4-9cb8-13b14bd9c75e,
  abstract     = {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 ona cultivator frame. An example of actual cultivator data is used to illustrate the model and demonstrate the accuracy of damage index prediction.},
  author       = {Karlsson, Johan and Podgorski, Krzysztof and Rychlik, Igor},
  keyword      = {Laplace moving averages,multi-axial loads,rainflow method,random loading,spectral density function},
  language     = {eng},
  note         = {Working Paper},
  number       = {8},
  pages        = {13},
  publisher    = {Department of Statistics, Lund university},
  series       = {Working Papers in Statistics},
  title        = {The Laplace multi-axial response model for fatigue analysis},
  year         = {2015},
}