Longitudinal shear
Longitudinal shear
(OP)
Can anyone please tell me what is "longitudinal shear" in concrete?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: Longitudinal shear
Now consider the beam withpot any layers moment of inertia of the beam proportional to 1(cube)=1
For the beam to act as a single unit therefore should be enough adhesion throughout the depth.Without this you are essentially reducing the moment of inertia of the beam by 16 times(thumbsdown)This is just to visualize physically horizontal shear.YOu can refer to strength of material books to get theoretical derivations(complimentary shear)
RE: Longitudinal shear
Take a deck of cards, hold it between thomb and middle finger, then push down on the center of the deck with your index finger. As the deck bends, you can see the cards sliding over one another. That's horizontal shear.
Max stress is Fvmax= 3V/2bd for a rectangular section
RE: Longitudinal shear
RE: Longitudinal shear
From strenght of material, the shear stress between the contact surfaces is v=VQ/Ib where v is the horizontal shear stress, V is the shear force acting on the section in question, Q is the first moment of area of the member about the centroidal, I is the uncrack moment of inertia and b is the width.
Hope this help.