Hi everybody,
I am trying to model an anisotropic hyperelastic material in plane stress under uniaxial tension
where W=Wiso +Wani= C10*(I1-3)+C4*(I4-1)2 .
When the load is parallel or perpendicular to the fiber direction, the deformation gradient returned by Abaqus matches the theoretical...
Hi everybody,
I read up more on "crack propagation" and "cohesive elements" in Abaqus. But i am still struggling to make it run and frankly i am running out of time. I have got only two more days to get the model running...
I recall the problem that i want to simulate:
A piece of rubber...
Hi everybody,
I am trying to simulate crack propagation in rubber material. As you can see in the attached pictures, i aim at trying to propagate the crack along the horizontal line.
I have browsed through the help and found out that ther is a feature called "Debond" that permits crack...
Hi,
I am trying to model a penny shape crack in a 3D model (see pictures attached in the Power Point Presentation). To sketch the crack I use the "Shell ---> Revolve" featured function" of Abaqus.
Indeed I sketched a line that I revolved (by a 360 angle) with respect to the axis of revolution...
Hi everybody,
I would like to create a contour and compute the contour integral of the Eshelby Tensor (computed through a UVARM subroutine) along that path (see attached picture).
Here are my questions:
1 -- Is it possible to define a contour in Abaqus so that Abaqus will be able to identify...
Hi everybody,
I am modeling a "seam" crack inside the geometry and i would like to compute the J-integral of that crack. So what i did is that i defined the crack tip and the direction of the crack growth.
The problem is that when i take a look at the results the first contours return quite...
Hi,
I created a UVARM subroutine to create some output variables. I would like to use some of these output variables to define a vector field at "each node" for my 2D planar model.
Indeed, i would like to use, let's say UVAR(10) and UVAR(11), as the components of a vector in the plane so that...
Hi,
I am still trying to model a crack line in a 2D plane stress rubber membrane subjected to different states of stress (not only uniaxial or equibiaxial tension ...). Due to the loss of the symmetry i have to model the whole model, i mean i can't simplify the model into its half or quarter...
Hi,
I am trying to model a crack inside the geometry. Due to the loading applied to the outside boundary of the model i can't simplify the model into its half or even quarter part. I definitely want to model a crack line inside the geometry.
I have been told that i can do it through the TIE...
Hi everybody,
I would like to model a crack line inside a model. As you can see on the schematic picture that i attached i would like to model a crack inside the geometry and not lying on a boundary.
The file that i attached accounts for a crack lying along one of the principal stress axis. In...
Hi everybody,
I built up a model that calls a DISP subroutine to compute the displacement at its outside boundary.
When i use only one step to get to the solution then i get the final displacement that i expected.
But when i use two or more steps then the solution is always higher than i...
Hi everybody,
I am encountering a very unexpected problem modeling a shear stress in a plane stress membrane.
Thus i got back to a very simple model which accounts for a shear stress. I used only two quad linear elements as you can see on the attached file along with both reduced and standard...
Hi again,
I was trying to use an example file of a DLOAD subrtoutine to apply a uniform load:
SUBROUTINE DLOAD(F,KSTEP,KINC,TIME,NOEL,NPT,LAYER,KSPT,
1 COORDS,JLTYP,SNAME)
C
INCLUDE 'ABA_PARAM.INC'
C
DIMENSION COORDS(3)
CHARACTER*80 SNAME
C
F=10
RETURN...
Hi,
For my simulation I need to use the DISP subroutine for applying boundary conditions.
Since i am completely new in the subroutine process i am trying to start with simple examples. And i am trying to apply uniaxial tension conditions using the DISP surboutine. I know i can do it without...
