Lec-6 Deflection of Structure Beam-IV

[drago23live]

do you have and videos on couples on bmd? send me link plz....

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[MrGka1]

do you have and videos on deflection as a result of impact loading of beams?If so send me a link.

[diflection1]

warnnig:l(1)=L and l(2)=a,ok?

[diflection1]

It took me sometimes, but I finally got it,what do you think?

[diflection1]

graph the fourth degree polynomial,then find EI d^2y/dx^2=M(x)=moment

[diflection1]

example:EI y(x)=-(1/4)X^4+(203/54)X^3-(48­9/4)X

[diflection1]

given ;P=10 #

[diflection1]

given:W=6#/ft

[diflection1]

deflection formua:EI y(x)=(4PaL^2-wL^4-4Pax^2+2wL^2­X^2-WLx^3)

[diflection1]

formula for the elastic curve:

[diflection1]

formula for moment ;EI d^2y/dx^2=X/2L(WL^2-2Pa-WLX) between support l(1)=L and l(2)=a in my equation.

[diflection1]

I arrived to the same reaction formula by using integration

[diflection1]

I am still learnig on my own.

[diflection1]

THANK YOU MUCH

[leparditas]

actualy you can calculate this kind of stuf using staad software you just draw a sceme make analyses and you get all stuff you need

[diflection1]

need a graph for deflection,moment,shear..

a p.s.f versus span.

[diflection1]

my name is Luis,I realize that I need a strong background in order to understand it or at least to get an idea of what you're talking about..I am an aluminum

contractor,I mean ,do screen enclosures for a living;as you can see , I work with aluminum ,in particular,1x2 o.b,2x3 PB,SB,and S.M.B(=self mating beam).so,let's come with a problem here.

IF a 2x4 S.M.B @ 8 feet supports 500#,then how many pounds(#s) a 2x8 @ 10 feet would support?