mass scaling
mass scaling
(OP)
hello.
I am trying to model a stent in Abaqus. Basically i am running tests wher i apply an internal pressure so the stent (cykindrical shape) expands radially until it deforms plastically. I apply this pressure load in a dynamic time step. I then have another time step where the load is removed, and the stent, since deformed plastically, should stop exp-anding and remain in the same shape (roughly speaking). The problem i have is that it keeps expanding during teh second timestep even when the load is removed. i suspect this is from the fat that im using substantial mass scaling in order to increase the simulation. is there any other way to increase the speed without having to use mass scaling.
thanks very much
andy
I am trying to model a stent in Abaqus. Basically i am running tests wher i apply an internal pressure so the stent (cykindrical shape) expands radially until it deforms plastically. I apply this pressure load in a dynamic time step. I then have another time step where the load is removed, and the stent, since deformed plastically, should stop exp-anding and remain in the same shape (roughly speaking). The problem i have is that it keeps expanding during teh second timestep even when the load is removed. i suspect this is from the fat that im using substantial mass scaling in order to increase the simulation. is there any other way to increase the speed without having to use mass scaling.
thanks very much
andy





RE: mass scaling
corus
RE: mass scaling
RE: mass scaling
-- drej --
RE: mass scaling
corus
RE: mass scaling
Only imho, of course.
RE: mass scaling
For such a slow speed process implicit analysis (with the right contact settings) will usually work. In many cases, such as this one where mass scaling is significantly affecting the solution, getting the implicit analysis to work is worth the effort.
Alternatively, you may stick with explicit analysis but with less mass scaling and accept the resulting smaller time step size.
Nagi
RE: mass scaling
RE: mass scaling
RE: mass scaling
RE: mass scaling
corus
RE: mass scaling
RE: mass scaling
corus