<abstract xmlns="http://www.w3.org/1999/xhtml"> This paper presents issues of fatigue life calculations in operational load conditions. The assumed runs were so processed as to get a set of sinusoidal cycles by using the following methods: full cycles counting method and rainflow counting method. On the basis of such sets of cycles of the varying parameters Sm i and Sa i were prepared block load spectra of equivalent amplitudes Saz , obtained with the use of an original method of these authors, in which two-parameter fatigue characteristics were applied. The work resulted in comparison of fatigue life results for load spectra determined by using the assumed cycles counting methods and the assumed two-parameter fatigue characteristics: the model IM, model II, model III and model IV, respectively.</abstract>

This paper presents issues of fatigue life calculations in operational load conditions. The assumed runs were so processed as to get a set of sinusoidal cycles by using the following methods: full cycles counting method and rainflow counting method. On the basis of such sets of cycles of the varying parameters Sm i and Sa i were prepared block load spectra of equivalent amplitudes Saz , obtained with the use of an original method of these authors, in which two-parameter fatigue characteristics were applied. The work resulted in comparison of fatigue life results for load spectra determined by using the assumed cycles counting methods and the assumed two-parameter fatigue characteristics: the model IM, model II, model III and model IV, respectively.

Problems of Equivalent Load Amplitude in Fatigue Life Calculations

Assoc. Prof., University of Technology and Science in Bydgoszcz, Poland

Ph.D., University of Technology and Science in Bydgoszcz, Faculty of Mechanical Engineering Department of Mechanics and Machine Design 7 Prof. S. Kaliski Street 85-796 Bydgoszcz Poland, phone: (+48) 52 340 82 53 (+48) 52 340 82 78

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Problems of Equivalent Load Amplitude in Fatigue Life Calculations"}

This paper presents issues of fatigue life calculations in operational load conditions. The assumed runs were so processed as to get a set of sinusoidal cycles...

Problems of Equivalent Load Amplitude in Fatigue Life Calculations

Publié en ligne: 20 avr. 2016

Pages: 85 - 92

DOI: https://doi.org/10.1515/pomr-2016-0012

Mots clés
operational load, equivalent load amplitude, two-parameter fatigue characteristics, fatigue life

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Problems of Equivalent Load Amplitude in Fatigue Life Calculations

Publié en ligne: 20 avr. 2016

Pages: 85 - 92

DOI: https://doi.org/10.1515/pomr-2016-0012

Mots clésoperational load, equivalent load amplitude, two-parameter fatigue characteristics, fatigue life

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
operational load, equivalent load amplitude, two-parameter fatigue characteristics, fatigue life