MecMovies 4.0 : M2.4: Normal Strain in Rotating Mechanism

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Chapter 2: Strain
M2.4: Normal Strain in Rotating Mechanism

Rigid Plate Deflection at B

State the Problem
Table of Contents
Rigid Plate Deflection at D
Rigid Plate Deflection at B
Compute Normal Strain in Rod (1)

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The figure shows a rigid triangular plate B C D which is pinned at C, supported at B by a horizontal rod of length 1200 millimeters and supported at D by a vertical post of height 600 millimeters. The clearance between the post and the plate is 1.5 millimeters. The post is fixed to the ground at E and the rod is fixed to a wall at A. The plate has dimensions 600 millimeters along C D and 480 millimeters along B C. A load P directed vertically downwards acts on the plate and this causes the plate to rotate about C and makes contact with the post at D. The plate is deflected by v subscript D at the point D and the rod elongates by v subscript B at the point B. The post is compressed by 1.08 millimeters.

$\frac{V_{B}}{480 mm} = \frac{2.58 mm}{600 mm} ∴ V_{B} = 2.064 mm$

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