Accession Number:

ADA089119

Title:

On the Dynamic Energy Release Rate in Elastic Crack Propagation.

Descriptive Note:

Interim rept.,

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF MATHEMATICS

Personal Author(s):

• Gurtin,Morton E.
• Yatomi,Chikayoshi

Report Date:

1979-12-01

Pagination or Media Count:

34.0

Abstract:

It is the purpose of this paper to give a unified treatment of the dynamic energy release rate, E, for a sharp, straight crack in a hyperelastic body undergoing finite strain. As our main result we decompose E into the usual quasi-static energy release rate plus a nonpositive dynamic contribution thus for a dynamic solution the energy release rate computed using the classical quasi-static formula is larger than the actual dynamic energy release rate.

Descriptors:

• *ENERGY
• *ELASTIC PROPERTIES
• *CRACK PROPAGATION
• *RELEASE
• *DYNAMIC TESTS
• FINITE ELEMENT ANALYSIS
• THEORY
• RATES
• STRAIN(MECHANICS)
• FRACTURE(MECHANICS)
• EQUATIONS

Subject Categories:

• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE