Numerical effects on notch fatigue strength assessment of non-welded and welded components

M. Leitner, P. Pauer, P. Kainzinger, W. Eichlseder

Research output: Contribution to journalArticle

Abstract

Local fatigue strength assessment based on threshold values obtained by linear-elastic notch stress calculation is commonly utilized due to its applicability to complex geometries with an acceptable effort. As the result of a finite element computation is affected by the element type and mesh refinement, this paper investigates the numerical influence on the notch stress based fatigue strength assessment of non-welded and welded components. Based on extensive finite element studies employing the software package Abaqus it is concluded that quadratic shape functions with a number of sixteen for non-welded parts and twelve elements over a semicircle for welded joints should be at least applied to minimize the numerical impact.
Original languageEnglish
Pages (from-to)51-61
Number of pages11
JournalComputers & Structures
Volume191.2017
Issue number15.October
DOIs
Publication statusPublished - 15 Oct 2017
Externally publishedYes

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