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Foros Ingeniería Civil • Periodo natural Pendulo Invertido
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Periodo natural Pendulo Invertido

Publicado: Jue Feb 26, 2009 2:11 pm
por ___YoO___
Hola, tengo la siguiente duda...
He modelado un pendulo invertido en sap2000, y obtengo el periodo fundamental distinto al que saco a mano. y no logro entender de donde viene la diferencia.

L=3m
m=805kg
Cajon 430x6, Acero A36

Tn=2*pi/RAIZ(3*E*I/m*L^3)=0.07 (A mano)
Tn=0.22 (SAP2000)

Aplique factor 0 en la masa del perfil, y la puse concentrada en la parte superior. Adjunto modelo por si alguien lo quiere chequear.
Alguien seria tan amable de explicarme el error? Gracias!

Re: Periodo natural Pendulo Invertido

Publicado: Vie Feb 27, 2009 5:55 am
por ___YoO___
Ya encontre la solucion... simple error de unidades, ya que SAP trabaja con masa en Fuerza*seg^2/Longitud, y no en Kg directamente.