Learning Forum

[anastassiosm]

Hello all,

I'm trying to model battery nail penetration test in Mechanical. Below is the geometry and the blue structure is the trigger cell. I have an internal heat generation as an input in that structure that simulates the thermal runaway of the cell. I want to calculate the transient temperature distribution from this runaway. The problem is that the rest of the battery cells will also trigger an internal heat generation rate if the cell's temperature reaches a certain value. Is it possible to define an internal heat generation rate that is triggered at a certain temperature?

Thanks!

[Erik Kostson]

Hi
This post might be of help (you just need to change that hgenval array to have the desired behaviour):

Thank you

Erik

[anastassiosm]

Thanks Erik!
First time trying APDL. Instead of using arrays could this be done with a function? for example have a Q=f(exp(time)) kick in at a certain temperature value?
Thanks
Anastassios

[Erik Kostson]

Hi

No, the only way is to use an array - you just need to approximate your function into discrete values that go into the array.
All the best

Erik

[anastassiosm]

Hello Erik Thanks for your guidance I was able to generate the array for Q=f(exp(time)) using the function editor in ANSYS classical and import it in WB. It worked as planned! I was wondering if there's a way to use an IF statement to call this Q=f(exp(time)). As mentioned I want it to kick in at a certain temp. Can I do something like this: IF TEMP=>500K THEN [Q=f(exp(time)) array] ELSE hgen=0.