Assessment of the endurance limit of light structural metal components using the fatigue surface development method

The paper presents a numerical method developed by the authors. The method consists in obtaining a three-dimensional component fatigue surface model according to the results of tests corresponding to two to four values of the operational factor, making it possible to plot the fatigue limit – operati...

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Published inVestnik Samarskogo universiteta. Aèrokosmičeskaâ tehnika, tehnologii i mašinostroenie (Online) Vol. 23; no. 2; pp. 100 - 108
Main Authors Zalyaev, R. A., Kirpichev, V. A.
Format Journal Article
LanguageEnglish
Published Samara National Research University 10.07.2024
Subjects
aggressive environment effect
endurance limit
fatigue surface
light structural metals
loading cycle
model adequacy
vacuum
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Summary:The paper presents a numerical method developed by the authors. The method consists in obtaining a three-dimensional component fatigue surface model according to the results of tests corresponding to two to four values of the operational factor, making it possible to plot the fatigue limit – operational parameter curve. A description of the algorithm of the method is presented, its validity is confirmed. The results show good agreement with outside empirical data for other values of the operational parameters. A model of the fatigue surface is constructed. The model specifies the calculation of strength of aircraft elements operating in rarified atmosphere (e.g. engine compartments of space complexes and upper stages of carrier rockets). The model increases the endurance calculation accuracy and enables structural mass optimization.
ISSN:2542-0453
2541-7533
DOI:10.18287/2541-7533-2024-23-2-100-108