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.
Originalsprache | englisch |
---|---|
Seiten (von - bis) | 51-61 |
Seitenumfang | 11 |
Fachzeitschrift | Computers & Structures |
Jahrgang | 191.2017 |
Ausgabenummer | 15.October |
DOIs | |
Publikationsstatus | Veröffentlicht - 15 Okt. 2017 |
Extern publiziert | Ja |
Schlagwörter
- Element type
- Finite element analysis
- Linear-elastic computation
- Mesh refinement
- Notch stress approach
- Shape function