acceleration psd negative

Altair Forum User

hi,

when i obtain acceleration psd in opti some of the values are negative. what should i do to avoid that??when i ask in h3d form it has a option magnitude can i obtain only magnitude in opti form???what is the reason for negative values in psd

Altair Forum User

Hi @jahnavi

 

What is your input data look like?

 

Are there any imaginary valules and what about the frequency data does it has any negative terms?

 

It would be better if you share the model to understand how you modeled.

Altair Forum User

hi,

there are no imaginary values and negative values of frequency

stresses are also very less

Altair Forum User

hii sir,

Is there any solution for that?? or the reason for that?

Altair Forum User

@jahnavi

 

Analysis is still running, Will update when I have results.