Biaxial load effects on the crack border elastic strain energy and strain energy rate

✍ Scribed by J. Eftis; N. Subramonian; H. Liebowitz

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 728 KB
• Volume: 9
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(77)90001-7

✦ Synopsis

In a previous paper it was shown that the singular expressions for the elastic stress aad displacements in the border region of a line crack are inadequate, genemlly speaking. This is nowhere more clearly demonstrated than for the case of the infinite sheet with a flat central crack, biaxiiy loaded along its outer boundaries. For this particular problem, the entire effect of he load applied parallel to the plane of the crack shows up in the generally discarded second (non-singular) terms of the series representations for the stresses and displacements. Omission of these contributions is, in effect, equivalent to denying the presence of the boundary load applied parallel to the crack and, consequently, leads to prediction of results at vmiance with expfzimental data.

In this paper wc continue with further discussion of the same problem, focusirg attention on the fact that the local elastic strain energy density and strain energy rate depend signiicantiy on the biiiality of the applied load.