Hello everyone, Harish MV here, can anyone help me out, how to check vibrational rigidity of any structure (made out of Aluminium square tubes)

Hello everyone, Harish MV here, can anyone help me out, how to check vibrational rigidity of any structure (made out of Aluminium square tubes)

i think this could be interpreted a couple ways

a frequency analysis would tell you what frequencies to avoid and what the mode shapes will be but not the actual deformation or stress

the next logical test would be a harmonic analysis which would tell you the displacement and stress maximums over a frequency range