Some observations on the path stability in fracture propagation for biaxially stressed plates

✍ Scribed by G. Alpa; E. Bozzo; L. Gambarotta

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 665 KB
• Volume: 13
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(80)90010-7

✦ Synopsis

The path stability problem for fracture starting from a straight crack in a biaxially stressed plate is investigated. The analysis is performed by employing a simple equivalent crack in order to obtain an approximate evaluation of the Stress Intensity Factors of the S-shaped crack which may be generated by the fracture propagation. It is shown that crack propagation deviates from the original direction when the applied stress parallel to the crack plane becomes higher than that perpendicular to it. The trend of the fracture trajectories and their sensitivity to small deviations caused by irregularities have also been determined for various values of the stress biaxiality ratio. Some comparisons with previous analyses are made.