| Autor: |
Kosmatka, J B, Fries, R H, Reinholtz, C F |
| Zdroj: |
Journal of Strain Analysis for Engineering Design; October 1990, Vol. 25 Issue: 4 p233-240, 8p |
| Abstrakt: |
An analytical and experimental study has been performed to determine the tension and bending stress concentration factors as a function of notch depth for ‘U'—‘V’, and opposed ‘U'—‘V’ notches. Accurate results are produced using quadrilateral finite elements where the edge-lengths in the notch region are less than 10 percent of the notch radius, and using strain gauges where the active gauge length is less than 1/3 the notch radius. Results are presented for single ‘U’ and ‘V’ notches that are outside the range of previously published studies. A detailed stress analysis of a single notched specimen revealed the presence of a tension stress concentration factor (Kt> 1) and a bending stress reduction factor (Kb< 1) on the un-notched side of the bar directly opposite the notch. An approximate method of determining stress concentration factors for opposed ‘U'—‘V’ notch geometries is presented. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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