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The Laplace multi-axial response model for fatigue analysis

Karlsson, Johan; Podgórski, Krzysztof LU and Rychlik, Igor LU (2016) In International Journal of Fatigue 85. p.11-17
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 on a cultivator frame. An example of actual cultivator data is used to illustrate the model and demonstrate the accuracy of damage index prediction.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Laplace moving averages, Multi-axial loads, Rainflow method, Random loading, Spectral density function
in
International Journal of Fatigue
volume
85
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85008686832
  • wos:000369459200002
ISSN
0142-1123
DOI
10.1016/j.ijfatigue.2015.11.024
language
English
LU publication?
yes
id
9781c8e1-3001-4bc4-b398-880f341284b2
date added to LUP
2017-04-19 13:25:05
date last changed
2017-10-29 05:00:30
@article{9781c8e1-3001-4bc4-b398-880f341284b2,
  abstract     = {<p>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.</p>},
  author       = {Karlsson, Johan and Podgórski, Krzysztof and Rychlik, Igor},
  issn         = {0142-1123},
  keyword      = {Laplace moving averages,Multi-axial loads,Rainflow method,Random loading,Spectral density function},
  language     = {eng},
  month        = {04},
  pages        = {11--17},
  publisher    = {Elsevier},
  series       = {International Journal of Fatigue},
  title        = {The Laplace multi-axial response model for fatigue analysis},
  url          = {http://dx.doi.org/10.1016/j.ijfatigue.2015.11.024},
  volume       = {85},
  year         = {2016},
}