Hello,
I was wondering if it is possible to apply a tie constraint in a particular step in Abaqus ( while running a multi step analysis).
My simulation is a 3 step process. The first step involves the assembly of 2 concentric cylinders, by making a plug move through the inner tube, expanding...
...My end goal is to obtain the residual stresses post assembly.
Any help or suggestions would be appreciated.
Thanks
.......................
*Heading
** Job name: Job-3 Model name: Axisymmetric-Explicit-Copy
** Generated by: Abaqus/CAE 6.12-2
*Preprint, echo=NO, model=NO, history=NO...
Ok I faced a similar issue a while back where I had to input residual stresses from a static analysis into a fully coupled thermal stress model. I figured that there isn't a way to specify initial residual stresses in Abaqus withouyt using the subroutine. this is what i did
Step1 : Fully...
What is the reference temperature used by Abaqus in the event that an initial temperature isn't specified by the user ?
My guess is that it uses 0 C or 273 K, but I would like to reconfirm the same.
Thanks
settler - i haven't had the need to model a physical fluid cavity at any point. but i looked around online and one post had suggested that if it is required to have a fluid then you would probably have to run a co-simulation of abaqus explicit and CFD. i had suggested a box ( ie a closed region)...
hello,
my goal is to perform a static analysis on a 3 cylinder composite by applying an internal pressure on the inner cylinder to begin with. this would be to assemble the cylinders by bringing them in contact.
once this is done i would like to perform a fully coupled temp disp analysis where...
create a box or cylinder that contains your liq. i would use a box as you dont have to deal with cylindrical coordinates. i will leave it to you as how to how design this box based on your problem. create a horizontal partition to separate the liquid nitrogen region from the other region. you...
I would like to know if there is a way to output the heat generation rate (W/m^3) in the Abaqus odb.I have a curved beam to which a non-uniform heat generation is applied.
Qgeneration = f(thickness,length)
I would like to get an output of the applied heat generation to the curved beam just to...
Thought I'll attach a separate plot of COPEN .http://files.engineering.com/getfile.aspx?folder=0ee50de8-88af-4b6e-9586-f77e6a064d23&file=COPEN_plot.jpg
...this with a middle tube being a perfect cylinder.
Also , I have this file attached that talks about the subroutine DLOAD and states that
" *DLOAD defines pressure (i.e. compressive normal stress)
to be positive, so we apply tensile loading by making the pressure negative."
Does this...
I did plot COPEN for the outer tube and my COPEN values are of the order of 8e-10 meters and corresponding contact pressures of the order of -3E06Pa . In another model when I had a separation of 4e-06 meters I got a zero contact pressure.
Is this because , the value 2e-11 meters is so small...
I can relate to what you are saying. So does open up , the contact pressure on the slave surface will be zero since no contact is being made. Is that right ?
I'm seeing contact pressures of the order of -4E06 Pa to -2E09 Pa
Thanks for your help.
Hi,
I have a working model of 3 concentric cylinders with the cylinder in the middle being the master surface and the other two being the slave surfaces. I have a pic attached of the model , which would better represent my question.
A gap opens up between the middle cylinder and the outer...
The analysis user's manual section 7.8.1 states that the *SYMMETRIC MODEL GENERATION option is not available for models defined in terms of an assembly of part instances.
I guess you cannot use it when you have an assembly of instances.
Yeah I did the 2D axisymmetric analysis and was looking to do a symmetric model generation to convert it to 3D , but the user's manual states that the symmetric model generation cannot be used for models defined in terms of an assembly of part instances.
So I guess this option is ruled out ?
