Question
Asked Nov 3, 2019
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per the attached figure:

 

a shear force of V=340 kN is applied to the box girder. determine the shear flow points at A and B.

90 mm
90 mm
100 mm
A
200 mm
190 mm
В
200 mm
10 mm
180 mm
10 mm
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90 mm 90 mm 100 mm A 200 mm 190 mm В 200 mm 10 mm 180 mm 10 mm

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Expert Answer

Step 1

Consider the figure showing the cross-section of the structure (box). Here, the neutral axis is N.

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o-2m 0-2m 10 0

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Step 2

The moment of inertia of the cross-section section about the neutral axis is the difference between the moment of inertia related to outer dimensions and the inner dimensions.

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1 1-(0.2 m)(0.4 m)(0.18 m)(0.38 m) 12 12 0.2436x10 m4 =

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Step 3

The effective distance for the cross-section will be the sum 0.19 m and the half of the thickness of the boundary of the box. The effect...

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, (y)(4) (0.195 m)(0.01 m)(0. 19 m) 0.3705x103 m3 And -2(0.1 m)(0.2 m)(0.01 m)+ (0.195 m)(0.01 m)(0.18 m) 0.751 x10 m3

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