Weight function for cracks ahead of sharp notches

✍ Scribed by T. Fett

• Publisher: Springer Netherlands
• Year: 1996
• Tongue: English
• Weight: 201 KB
• Volume: 74
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00018580

✦ Synopsis

Using the weight function method one can compute the stress intensity factor K~ for any stress distribution along the crack line in the uncracked body by

The weight functions are known for various crack geometries in various components. In this investigation we consider through-the-thickness cracks in front of V-notched bodies. At sharp notches singular stresses occur. If a crack exists ahead of such a notch, the stress intensity factor caused by notch stresses is of interest in failure prediction. Figure 1 shows the geometrical data of the notch-crack configuration. Under symmetrical loading the normal stresses along the crack line in the uncracked component for small distances from the notch tip x<<L are given by A!