Stretch then add material
Stretch then add material
(OP)
Hello,
I have a hollow cylinder that I would like to first stretch and then add material (like corrosion built up in a stretched pipe). My question is how do i add the material after stretching. This will be done in Abaqus 6.8 CAE
Thanks!
I have a hollow cylinder that I would like to first stretch and then add material (like corrosion built up in a stretched pipe). My question is how do i add the material after stretching. This will be done in Abaqus 6.8 CAE
Thanks!





RE: Stretch then add material
Rob Stupplebeen
RE: Stretch then add material
RE: Stretch then add material
Rob Stupplebeen
RE: Stretch then add material
Model a hollow hyperelastic cylinder to represent an artery with some type of material on the inside wall. This represents a stenosis (narrowing of the inner diameter, see attached file). Arteries are in a stretched state in the body, typically 1.3-1.6 stretch ratio. Once stretched we are then applying internal pressure and observing the effects. This is a simple setup but I would like to try to add the material after stretching becasue in the body the arteries are normally stretched and then plaque builds up over time. I'm not looking for material to be built up over time I am looking for the effect of pressure with an already fixed amount of material along the inside wall.
RE: Stretch then add material
My assumption is that ideally you want the artery to remain relatively cylindrical and apply the plaque to this shape. Is that correct?
I hope to help in the next step.
Rob Stupplebeen
RE: Stretch then add material
RE: Stretch then add material
Rob Stupplebeen
RE: Stretch then add material
RE: Stretch then add material
There is also the Model Change option (or something similar, haven't used it before) which allows you to modify the model between steps, this would allow you to add the plaque after the initial loading step.
RE: Stretch then add material
I would try modeling this as 2 parts. Inflate the Artery. Then, apply pressure to the plaque and have contact without separation enabled to stick the plaque onto the artery.
I hope this helps.
Rob Stupplebeen
RE: Stretch then add material