Investigation of the Distribution of Tension in Notched Construction Elements
Abstract
A new treatment of stress- and strain concentra tions for special non-linear deformation law for shear is presented. A relation is obtained by which the real notch stress can be evaluated from the nominal stress and the elastic stress concentration factor. Static and fatigue tests are given for variously notched specimens. The strain-measurements were performed by electrical strain gages; additional measurements were made by means of the photoelastic stress-coat method. The aim of the static tests was die investiga tion of the notch-angle influence on the elastic stress concentration factor for tension and bend ing, the determination of the stress- and strain distribution in the elastic and plastic range respectively, and also the dependence of the stress concentration factor on the nominal stress for the materials used (Steel St.00.12, St.00.21, Aluminum alloy Velodur). The result of the fatigue tests was the establishment of Wohler curves for two different specimen shapes (bars with central holes) and their comparison with the Wohler-curve of the corresponding unnotched specimen.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0410529
Entities
People
- H. Neuber