Theoretical investigation of elastoplastic notch fields under triaxial stress constraint
Source abstract
Abstract
In this paper, an exact elastic-plastic solution has been obtained based on the J2-deformation theory of plasticity for a plate having a circular hole under biaxial tension and triaxial stress constraint in linear elastic strain-hardening materials. The theoretical solution shows that a linear elastic solution of the equivalent strain can be used to linear elastic-power hardening plastic situation just by a simple variable replacement. Then a strain equivalent rule (SER) is proposed to predict the elastoplastic notch fields by use of the elastic solution. Validations against theoretical analyses and finite element calculation for various combinations of material properties, triaxial stress constraints, load levels show that the SER can be used to predict stress-strain distributions in the whole plastic zone effectively and conveniently.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Engineering Applied Research · Engineering Structural Analysis Methods
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References (22)
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