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Question
Which one of the following shear stress distribution diagrams is correct for cross-bar section shown in the Figure-I ?
Which one of the following shear stress distribution diagrams is correct for cross-bar section shown in the Figure-I ?
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Solution
The correct option is A
Shear stress varies in parabolic shape across a rectangular cross section. Value at top and bottom is zero and maximum at neutral axis. Shear stress will be zero at A and will increase upto B parabolically. As the width in figure increase suddenly near B shear stress will decrease suddenly. Diagram will be symmetric about NA.
Shear stress varies in parabolic shape across a rectangular cross section. Value at top and bottom is zero and maximum at neutral axis. Shear stress will be zero at A and will increase upto B parabolically. As the width in figure increase suddenly near B shear stress will decrease suddenly. Diagram will be symmetric about NA.
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