Dear All,
I face a problem where the output at modal analysis is not significant. so i try modeling it with Autopipe and Caepipe and the result from those two program is what i expected, and the result from both is almost the same.
So why only CAESAR that gives different result?
Example: with same model the output of natural frequency is almost the same for the three of them:

CAESAR II gives 14.78 Hz
Caepipe gives 12.54 Hz
Autopipe gives 12.32 Hz

But the mode shape is different from CAESAR, example i take only in x direction :

CAESAR II gives -0.00145 (in mode mass normalize)
Caepipe gives -10.865 mm
Autopipe gives -9.247 mm

I try to read the user guide and technical reference but it seem i can't found the answer of it.
please enlighten me.....