Can "*Debond" do the 3D crack propagation ?
Can "*Debond" do the 3D crack propagation ?
(OP)
Hi,
I used "*Debond" and "*Fracture criterion" for studing the crack propagation.
the 2D model has well passed. but not for 3D model. Abaqus indicate theses two errors :
*surface behavior,augmented lagrange keyword cannot be used if *initial condition,type=contact is specified
The *debond keyword is only valid for planar or axisymmetric contact surfaces. Slave surface assembly_surf_slave is not of this type
can't *Debond really treat 3D crack propagation ?
I have ever seen some examples of 3D crack propagation in Abaqus, How can they do it ?
I used "*Debond" and "*Fracture criterion" for studing the crack propagation.
the 2D model has well passed. but not for 3D model. Abaqus indicate theses two errors :
*surface behavior,augmented lagrange keyword cannot be used if *initial condition,type=contact is specified
The *debond keyword is only valid for planar or axisymmetric contact surfaces. Slave surface assembly_surf_slave is not of this type
can't *Debond really treat 3D crack propagation ?
I have ever seen some examples of 3D crack propagation in Abaqus, How can they do it ?
Talk To Other Members
RE: Can "*Debond" do the 3D crack propagation ?
"Crack propagation analysis:
-models quasi-static crack growth in two dimensions (planar and axisymmetric);"
I think you can model crack propagation in 3D using cohesive elements instead of debonding.
Also, you might be interested in Zencrack:
http://www.zentech.co.uk/zencrack.htm
RE: Can "*Debond" do the 3D crack propagation ?
I would like to simulate a crack growth. Is it possible to make an analysis where the load applied and the crack (as nodes release) are in function of time?
Thanks in advance,
Albert
RE: Can "*Debond" do the 3D crack propagation ?
by the way,
In the keywords of "*fracture criterion", there are these phrases :
Data lines to define the critical stress criterion (TYPE=CRITICAL STRESS):
First line:
1. Normal failure stress, x1.
2. Shear failure stress, y1.
3. Shear failure stress, y2. (Not applicable in two dimensions.)
if *Debond can't do 3D, in "*fracture criterion", why there are still a "y2" which seems to be applied for 3D ?
RE: Can "*Debond" do the 3D crack propagation ?
I have not tried it, but I think the procedure might work if the surfaces to be debonded are planar (in 3D). Then, the documentation and the error message you got would make more sense.