Crack Paths 2009

interface in between two materials. The numerical evaluations will be carried out with

the three-dimensional FE-based crack growth simulation program A D A P C R A C K 3 D .

that is ideally suited for such simulations also in non-homogeneous materials.

A D A P C R A C K 3 D

A D PACR ACK 3D

-

-

I‘

Z’.-

FE-mcsh-achustments:

I

"

'_ _.

I‘ 1;.-

NETADAPTIiD insertion of cracks

4

'

' definition of cracks 5' , '

Meshadaptation

3D-FE-mcsh

newcrack

from

global structural

suhmodul

ell-ordinates

node] with crac '

ofthe crack

Material tlntu ]

A B A Q U S

Fracture mechanical evaluation:

C m kmu, crack Surface stress intensity factors,

Determination ot‘Sl F

I

'

1 NETcRAck-Dg Crack growth dlrecuo"

1 _

crack growth lifetime

_

Crack growth rate

'

i

lifetime

Figure 1. Simplified functionality scheme ofthe crack growth simulation program

A D A PRCA C I Q D

A D A P C R A C KcBonsDists of three independent modules. which in combination

perform the fracture mechanical simulation (Figure l). The necessary mesh adaptation

that arises during a simulation is conducted by the module NETADAPT3Dwh,ile in the

third module NETCRACKItallD fracture mechanical evaluations are carried out. The (linear-elastic) FIE-computations are performed with the commercial code ABAQUSTM.

Dealing with inhomogeneous material behaviour in place of (classical) homogenous

material requires especial mesh adaptation procedures. that are in detail explained in [2].

Further information concerning the functionality and capabilities of the program can be

taken from [3-5].

728