Issue 15

I. S. Raju et

alii, Frattura ed

Integrità Struttu

rale, 15 (2011)

35-49; DOI: 10

.3221/IGF-ESIS.1

5.05

a uX j i   2 k ,

a w kj i   2

Z

, , G

G  I



(1)

II

Eq. 1, G I

G II

G values. T

and

are the M

ode I and M

ode II strai

n energy rele

ase rates, the

he total stra

in energy rel

ease

In rate

G T

can be e

valuated usin g

T G 

GG 

(2)

I

II

(a) In

terface defect

with craze cra

ck edge intera

ction.

(b) 12 : Deflectio

Substrate def n of interface

ect. and substrate d

Figure

efects.

Figure onservative c Ic , which is

eme for 4-nod s made by co f the fractur

e (linear) 2D e mparing the e toughness

lements. total strain values for th

13 : VCCT sch omparison i the smallest o

e rate G T to odes. Unst

energy releas e different m

In Mo

this paper, a de I fracture

somewhat c toughness G

the able

43