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Modal Analysis

Parthiban BUser: "Parthiban B"
Altair Community Member
Updated by Parthiban B

Hi everyone, 

 

While Performing modal analysis, I Gave RHO(Density) value in 7.8 x 10^-6(Kg/mm3) for steel material, I got some Modal frequency.



But, If same given in tone/mm3 ( 7.8 x 10^-9) I got some other frequency. Yeah it is obvious that natural frequency is a function of mass matrix but I am confused which to use?

image

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