dajeet

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Posts posted by dajeet


i have a 2D airfoil, but i want to add pressure to the edge of the airfoil, do you have any idea how to add pressure normal to the curved edges?
https://commons.wikimedia.org/wiki/File:NACA_4318.svg
thanks



Can you help me to check the model to make it runs with no error? just want to use this as a learning template?
using SF=1 will be ok.
thank you very much for the help.

Dear All:
I am trying to use HM translator from a platform in LSDYNA input deck to optistruct.
while i am trying to simulate it, it has error as "all entries have zero scale".
the second questions is the load steps, how could i apply all the spc boundary and load at once?
can somebody help me for this model ?


I am using LSDYNA for the solver
i set up tied contact surface between different shell layers, but it seems not working well
the punch is moving downwards, while there is one pressurized pipe with two different outlier shell as reinforcement,
can somebody check it for me?
thanks



can anybody help this item?

On 5/22/2017 at 1:26 AM, Prakash Pagadala said:this script does not work for my model
it says, the properties are not valid Nastran PBEAML Tbeams
i tried both nastran and optistruct
i am using HW2017

any expert can help me?
thanks

Ivan:
I conducted a simple topology optimization analysis, and in the final iteration, there is element density distribution results.
then how could i export such element density results out for the other FEA analysis?
please see my fem file.

Hi, Ivan:
thank you very much for the help.
sure, i will give a trial for size optimization and find the best diameter of the tube
i may need more help on this optimization side, i will keep you posted.

I am trying to model the 1d beam element for a cylinder type geometry
but the results seem too big.
can somebody help me to check?

anybody can help me?
thanks

also, what is the meaning of all the parameter in the monitored volume keyword...
i can't find any tutorial files explaining them..

I am new to Radioss
I am trying to follow the Radioss to build up an inflatable tube.
Here is the question:
in the airbag model, if i use the Monitored Volume, do i need to create a rigid wall along with it?
it seems that it is a necessary for the airbag modeling.
just want to confirm with expert.

add pressure to the edge of the 2d surface
in Altair OptiStruct
Posted · Report reply
this is for a 2D surface only structure, i knew how to add pressure to a surface in 3D case.
but for 2D case, the pressure can be only applied to the edge line.....
can you help me again?