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EDITOR’S RECOMMENDATIONS Theoretically, cast steel is ideally suited for use in structures subject to fatigue loads due to its high mechanical strength and virtually free shaping possibilities. However, the component resistance is determined by manufacturing-related im- perfections. Due to a lack of knowledge and the absence of easily applicable de- sign approaches, the use of cast steel components is usually rejected or coun- tered by the highest demands on manu- Fracture surfaces with blended crack fronts of the numerical calculations for differently distinct casting facturing quality. This blanket choice is defects usually uneconomical and not necessary from a technical point of view, since even major casting defects do not necessarily tance categories. The component design neighbouring flaws are considered by re- reduce the performance of a component. is carried out by limiting maximum stress duction factors or additional conditions. In this paper, an easy-to-use design ap- ranges, is based on established verifica- proach is presented, which allows the de- tion concepts, and is thus directly adap- Nagel, S.; Ummenhofer, T. (2022) Verein- termination of manufacturing quality ted to practical construction applications. fachte Bemessung von ermüdungsbean- based on local stresses. The link between Influences such as medium-voltage de- spruchten Stahlgussbauteilen. Stahlbau fatigue strength and allowable defect si- pendence, shape tolerances, brittle fractu- 91, No. 1, pp. 49–61. zes is established by newly defined resis- res, stress gradients and interaction of https://doi.org/10.1002/stab.202100085 42 Steel Construction 15 (2022), No. 1
Steel Construction: Design and Research – Wiley
Published: Feb 1, 2022
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