<abstract xmlns="http://www.w3.org/1999/xhtml"><p>One important element of any computational fatigue analysis is the adoption of a hypothesis of fatigue damage accumulation. The most commonly used is the hypothesis of linear accumulation of fatigue damage called the Palmgren-Miner hypothesis. This linear hypothesis does not take into account a factor of great importance: the mutual influence of consecutive fatigue load sequences on each other. In the presented paper, only two consecutive load sequences linked by mutual relations have been analyzed and the results of the analysis have been shown. A more complex form which takes into account the full load history would create complex formula difficult to use. Perhaps, we should go in this direction, especially that today we have enormous computing power at our disposal.</p></abstract>

One important element of any computational fatigue analysis is the adoption of a hypothesis of fatigue damage accumulation. The most commonly used is the hypothesis of linear accumulation of fatigue damage called the Palmgren-Miner hypothesis. This linear hypothesis does not take into account a factor of great importance: the mutual influence of consecutive fatigue load sequences on each other. In the presented paper, only two consecutive load sequences linked by mutual relations have been analyzed and the results of the analysis have been shown. A more complex form which takes into account the full load history would create complex formula difficult to use. Perhaps, we should go in this direction, especially that today we have enormous computing power at our disposal.

Nonlinear Fatigue Damage Accumulation

Warsaw University of Technology, Narbutta 84 Street, 02-524 Warsaw, Poland

Fatigue of Aircraft Structures

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Nonlinear Fatigue Damage Accumulation"}

One important element of any computational fatigue analysis is the adoption of a hypothesis of fatigue damage accumulation. The most commonly used is the...

Nonlinear Fatigue Damage Accumulation

Published Online: Jun 30, 2016

Page range: 18 - 23

DOI: https://doi.org/10.1515/fas-2015-0003

Keywords
cumulative fatigue damage, fatigue damage accumulation, cumulative damage rules, load interaction effects, fatigue life prediction

© 2015 Daniel Krzysztof Dębski, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Nonlinear Fatigue Damage Accumulation

Published Online: Jun 30, 2016

Page range: 18 - 23

DOI: https://doi.org/10.1515/fas-2015-0003

Keywordscumulative fatigue damage, fatigue damage accumulation, cumulative damage rules, load interaction effects, fatigue life prediction

© 2015 Daniel Krzysztof Dębski, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
cumulative fatigue damage, fatigue damage accumulation, cumulative damage rules, load interaction effects, fatigue life prediction