Momentos de inercia
Momentos de inercia
Momentos de inercia
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SoluciónEl momento y el producto <strong>de</strong> <strong>inercia</strong> <strong>de</strong> la sección resulta,I x =2 . 90 (10 9 )mm 4 I y =5 . 60 (10 9 )mm 4 I z =−3 . 00 (10 9 )mm 4Usando los ángulos <strong>de</strong> inclinación <strong>de</strong> los ejes principalesu, v=−2 .22[ 2.90 (10 9 )−5 .60 (10 9 )]/22θ p1 =−65 .8 ° ,2θ p2 =114 .2 °tan2θ p= −I xy( I x−I y )/2 =3 .00 (10 9 )⇒ θ p1=−32 .9 ° ,θ p2=57.1 °