I am trying to simulate a punching process in abaqus but cannot get the model to work correctly. When the punch hits the blank, it tries to deform the area and then aborts the analysis. How can I get the mesh to break becuase of the shear stress rather than just deforming?
Hello everyone. I have gotten this question for a long time.
As we all know, people are using elastic–perfectly plastic material to estimate the limit load for a specimen (structure). If the plastic zone is throughout the ligament as the load is increased, we say that the load is now reaching the limit load.
I am trying to read J integrals and K Factors from an Abaqus history output database, but I'm however getting a KeyError for 'setname=_PickedSet24' which is the nodeset generated from abaqus cae for the cracktip node. The problem is symetric CCT model using abaqus V6.8.2. In addition, as the script aborts at this point, I'm not quite sure how it will respond to variables 'J' or 'K' for J-integral and stress intensity factors respectively.
Hi all,
I have taken up this research project/attachment on
"characterising the fracture toughness of epoxy using mechanical
fatigue", and encountered lot's of problems while researching. I'm just
a student, not even in university, but rather still schooling (grade
10), so am completely new to this field, which explains my problem in
understanding all the lit reviews, lecture slides i found online.
Luckily, i found out this site, and would hope that someone can guide
me in the right direction!
Hi,
I want to model 3D crack propagation in Abaqus Explicit. For this I am thinking of using the *shear failure option with element deletion. The path of the crackin my models is not known. I have some basic questions in this regard.
1. Is *shear failure a good approach to model crack propagation ?
My problem is the following: I have a bounded domain \Om in a plane, and I am looking for the fundamental solution
div_y C \nabla N (x,y) = \delta_x, in \Om
where C is the elasticity tensor (anisotropic), with natural Neumann boundary conditions on \partial \Om (traction free).
I don't ask for explicit solutions! I would like to know that
\nabla N(x-y) \le C/|x-y|, where C is a constant depending on whatever!
There are three elliptical holes in the given plate, but make different angle with the direction of stress applied on the plate. I wonder if I can gain the solution listed below using analytical methods?(1) crack initiation will happen in which ellipse firstly, (2)the exaxt crack initiation location around the ellipse? And how?
thanks a lot!
Hi!
Can anyone give me some tips within strain based fracture mechanics. My problem is predicting the fatigue life of a gusset speciemen, using strain based FM. I have read some litterature, but have problems on understanding the order of calculating, and methods of solving the equations. If anyone could help me understanding, I would be greatful.
Thanks,
Sean Angus
Hello,
I am expected to calculate strain energy release rate for a single lap composite joint using VCCT in ABAQUS.How do I go about it?
The manual saya some thing about debonding? How do i do that in my model?
Thanks,
Srilatha
Hi everybody,
I'm looking for some resources (textbooks,webpages,papers) to give me some insights into stress analysis and fracture mechanics of functionally graded materials. i appreciate any suggestions.
Thanks.