Accession Number:

ADA071324

Title:

Considerations of Crack Growth and Plasticity in Finite Element Analysis,

Descriptive Note:

Corporate Author:

GEORGE WASHINGTON UNIV WASHINGTON D C SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

Report Date:

1978-07-01

Pagination or Media Count:

41.0

Abstract:

A finite element analysis was made of crack growth in a center-cracked specimen subjected to monotonically increasing load until the point of fast fracture. Since part of the specimen experienced unloading, the boundary value problem which was formulated was based upon incremental theory of plasticity. Experimental load and crack-size records were untilized. Linear relations between plastic energy and crack growth were observed. Fracture toughness parameters which were evaluated at the onset of unstable crack propagation, obtained from finite element analysis were in good agreement with those determined experimentally. Author

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE