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A hollow rectangular beam section square in size of outer dimension 120mm x 120mm with thickness of material 20mm is carrying a shear force of 125kN.Calculate the max shear stress induced in section.
written 4.7 years ago by gravatar for teamques10 teamques10 ★ 65k modified 2.0 years ago by gravatar for RakeshBhuse RakeshBhuse • 3.2k
strength of materials
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written 4.7 years ago by gravatar for teamques10 teamques10 ★ 65k

Data: B = D = 120 mm, t = 20mm, F = 125 kN

$Find \tau_{max}$

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$\mathrm{b}=\mathrm{d}=120-2 \mathrm{t}=120-2 \mathrm{x} 20=80 \mathrm{mm}$

Consider the area above the N.A.

$\left.\text { Shear stress }\left(\tau_{1}\right) \text { at the bottom of flange by taking width ( } \mathrm{b}=120 \mathrm{mm}\right)$

$\tau_{1}=\frac{F A \overline{Y}}{I b}$ …

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