Accession Number:

ADA238811

Title:

Eshelby Forces Associated with an Advancing Crack Surrounded by Vanishingly Small Inhomogeneity

Descriptive Note:

Final rept. 1 Sep 89-Aug 90,

Corporate Author:

ILLINOIS UNIV AT CHICAGO CIRCLE DEPT OF CIVIL ENGINEERING MECHANICS AND METALLURGY

Personal Author(s):

• Wu, Chien H.

Report Date:

1991-05-01

Pagination or Media Count:

148.0

Abstract:

The propagation of a crack surrounded by damage is simplistically replaced by that of a crack lodged in a vanishingly thin or small elastic inhomogeneity. This latter problem is asymptotically analyzed and numerically solved via the use of Fast Fourier Transform Algorithm. A re-examination of Mindlins grade-3 elasticity is thoroughly carried out to reveal the interaction between mechanical loading and surface tension.

Descriptors:

• *ALGORITHMS
• ELASTIC PROPERTIES
• SURFACE TENSION
• FAST FOURIER TRANSFORMS
• THINNESS
• MECHANICAL PROPERTIES
• HETEROGENEITY

Subject Categories:

• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE