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Effect of stress stiffness on elastic-plastic strain range

  • Many pressure vessel and piping components have to withstand high internal pressures and are therefore thick-walled so that geometric effects such as stress stiffening need not be accounted for. However, thin-walled or moderately thick structures may be sensitive to these effects. Design Codes such as the ASME Boiler and Pressure Vessel Code usually provide little guidance on when they are to be accounted for. In the opinion of the authors, this effect deserves more attention. Therefore, the purpose of this paper is to illuminate the effect of stress stiffening by investigating some examples, with particular attention to elastic-plastic strain ranges and the plastic strain range enhancement factor Ke used for fatigue analyses.

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Author: Hartwig HübelORCiDGND, Bastian Vollrath
URL:https://www.sciencedirect.com/science/article/pii/S0308016121001174?via%3Dihub
DOI:https://doi.org/10.1016/j.ijpvp.2021.104421
ISSN:0308-0161
Title of the source (English):International Journal of Pressure Vessels and Piping
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2021
Tag:Elbow; Ke; Plasticity; Strain range; Stress stiffening; Twice Yield
Volume/Year:192
Article number:104421
Faculty/Chair:Fakultät 6 Architektur, Bauingenieurwesen und Stadtplanung / FG Statik und Dynamik
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