Fracture Mechanics Forum

Hi all,

I had been trying to reproduce a crack propagation problem using XFEM/Cohesive Zone. The problem is a 200x200x50 notched plate which has been simulated using plane strain elements 200x200 with 50 mm thickness.

I generated the cohesive layer (zero thickness) between the plane strain elements in the notch region, as cohesive elements and cohesive material properties which will define the crack initiation location.

Hi all,

Hi,

Im doing a research about crack propagation in a material under cyclic loading but when i run my model,crack doesent prapagates properly.I was wondering if xfem has the ability of propagating the crack under cyclic loading or not!?How can i solve my problem?

How to find J integral using ansys of a CT specimen?

Both for 2D and 3D

Hi all,

 I'm trying to model a 2D cohesive layer with a zero-thickness in Abaqus (6.11.2)

The shape of the layer is a quarter circle.

When modelling this i first create a cohesive layer with a certain thickness.

I then convert the part of this cohesive layer to a orphan mesh, then edit the mesh, such that a zero thickness layer is created.

However when i want to submit the job i get the following error message:

Hello all.

For the below cases: 

1) Penny-shaped crack in a cylindrical bar

 Dear All

 I am new to FEM and ABAQUS.

 My research topic is: "Finite Element Simulation of Fatigue Crack Growth". It is about the determination of crack fronts.

If anyone of you have any experience/suggessions regarding this field/topic kindly help me with your valuable guidance.

And if you have any document/PDF/Thesis Report/Mathodology kindly send it to: sufian.ulsan [at] gmail.com

I'll be grateful to you for kind help.

Can any one tel how to simulate numericall and analytically fracture in polymers?

I am presently working on the effect of crack on the natural frequency.



I initially solved some basic frature problems in ansys.can anyone tel more about defining the path of crack by 3 point method and its significance.

Because i am getting a variation of .47(ansys) to 19(actual)  by changing its 3 points

For my
graduation project I’m working on a model to describe cracking behavior. For
this model I want to model a fibre-epoxy interface, see the attached figure 1
(due to symmetry only a quarter is modeled). The fibre part is modeled with
lineair elastic material. The epoxy part is modeled with CPS4 elements, with
elastic behavior and MAXPS damage (damaged evolution included). The connection
between the fibre and epoxy interface can be modeled with both a cohesive
surface and cohesive elements.  However