Eigenvalue for Multispan Beam's Natural Frequency Calc
Eigenvalue for Multispan Beam's Natural Frequency Calc
(OP)
I am trying to calculate the natural frequency of a fuel line for a FBO/windmill condition. In the guideline document supplied by the prime, it references Blevin's Pin-Pin Multispan & pin-clamp. (Table 8-3 d & e) with the formula.
In the formula, it is asking for the eigenvalue... is there a way to hand-calculate this for a multispan tube? I am sure i can run a SOL103 beam model and pick it up, but i'd like to do it by hand... if possible.
References I have access to:
Bruhn, Flabel, Hartog (vibe), Niu(stress), Roarks, Shanley, Peery, Petersons, Timoshenko (vibe)
In the formula, it is asking for the eigenvalue... is there a way to hand-calculate this for a multispan tube? I am sure i can run a SOL103 beam model and pick it up, but i'd like to do it by hand... if possible.
References I have access to:
Bruhn, Flabel, Hartog (vibe), Niu(stress), Roarks, Shanley, Peery, Petersons, Timoshenko (vibe)





RE: Eigenvalue for Multispan Beam's Natural Frequency Calc
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?