Getting Zero's Natural Frequency for the first 4 modes ; any idea why this happen
Getting Zero's Natural Frequency for the first 4 modes ; any idea why this happen
(OP)
Hello all,
I'm working on piping modal analysis through ANSYS but the surprise is that I got 4 zeros natural frequencies and very low 5th and 6th values. Although I put all supports boundary conditions.
I would highly appreciate your guidance and comments
Regards,
I'm working on piping modal analysis through ANSYS but the surprise is that I got 4 zeros natural frequencies and very low 5th and 6th values. Although I put all supports boundary conditions.
I would highly appreciate your guidance and comments
Regards,





RE: Getting Zero's Natural Frequency for the first 4 modes ; any idea why this happen
RE: Getting Zero's Natural Frequency for the first 4 modes ; any idea why this happen
Indeed it was like free free model. DO you know how could I estimate piping elastic support stiffness correctly;
Second question shall I consider adding point mass in modal analysis; I'll not perform any static or harmonic analysis jsut modal analysis