Accession Number:

AD0766922

Title:

Derivation of Crack Element-Stiffness Matrix by the Complex Variable Approach,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s):

Report Date:

1973-02-01

Pagination or Media Count:

35.0

Abstract:

The problem of crack analysis and stress singularities at the tip of a crack, has, up to now, been approached either in an analytical fashion, using complex variables and conformed mapping, or with the finite-element method, using elements which may or may not account for the singular stresses around the tip of the crack. The following study defines a so-called special element to be used at the crack tip in conjunction with the general finite-element method. It was proved to be more efficient than previous methods for it accounts more fully for stress singularities. The element-stiffness matrix was derived using conformal mapping of the special element into a more readily usable one. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE