Some observations on the effect of specimen size upon the plastic deformation around deep notches
✍ Scribed by G. Prantl
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 881 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
The purpose of this work was to investigate the effect of specimen thickness on the threedimensional plastic deformation of notches. Notched bend specimens, made of lead as a model material, were tested. Transverse and longitudinal deformations at the notch root were measured using simple experimental techniques. The results provide a picture of the transition from the plane stress to the plane strain deformation of a notch root, which is discussed and interpreted. The shape which is assumed by the notch under the condition of plane plastic flow is shown to be a consequence of the plastic incompressibility of the material. Further, the formation of cracks at the notch root is discussed.