Question

GE 213 Assignment 4 In the two-link structure shown, the links BC and CD are 33.8 mm wide and 7.94 mm thick (into the page). The pins at B and D have a diameter of 6.87 mm, and are in single shear (i.e., with a single supporting block at each location). The pin at C also has a diameter of 6.87 mm. The x-y coordinate system shown has its origin at pin B. Pins B and D have the same y-coordinate. The allowable magnitude of axial stress in link BC is 138 MPa, and the allowable shearing stress in pin B is 94.9 MPa. For each of these 2 individual stress requirements, determine the vertical load P that would be allowed according to that requirement. Assume that weights are negligible, and that the given values are exact. Assume that the normal stress on any cross section of a link is uniform over that cross section. Force P is applied to the pin at C, at a location in front of link CD. Also, at C, link CD is in front of link BC. B y? 0.467 m x (Final Answers: 35.9 kN, 4.29 kN) C P 0.813 m D 0.572 m

          GE 213 Assignment 4
In the two-link structure shown, the links BC and CD are 33.8 mm wide and 7.94 mm thick (into
the page). The pins at B and D have a diameter of 6.87 mm, and are in single shear (i.e., with a
single supporting block at each location). The pin at C also has a diameter of 6.87 mm. The x-y
coordinate system shown has its origin at pin B. Pins B and D have the same y-coordinate. The
allowable magnitude of axial stress in link BC is 138 MPa, and the allowable shearing stress in
pin B is 94.9 MPa. For each of these 2 individual stress requirements, determine the vertical
load P that would be allowed according to that requirement. Assume that weights are negligible,
and that the given values are exact. Assume that the normal stress on any cross section of a link
is uniform over that cross section. Force P is applied to the pin at C, at a location in front of link
CD. Also, at C, link CD is in front of link BC.
B
y?
0.467 m
x
(Final Answers: 35.9 kN, 4.29 kN)
C
P
0.813 m
D
0.572 m

GE 213 Assignment 4
In the two-link structure shown, the links BC and CD are 33.8 mm wide and 7.94 mm thick (into
the page). The pins at B and D have a diameter of 6.87 mm, and are in single shear (i.e., with a
single supporting block at each location). The pin at C also has a diameter of 6.87 mm. The x-y
coordinate system shown has its origin at pin B. Pins B and D have the same y-coordinate. The
allowable magnitude of axial stress in link BC is 138 MPa, and the allowable shearing stress in
pin B is 94.9 MPa. For each of these 2 individual stress requirements, determine the vertical
load P that would be allowed according to that requirement. Assume that weights are negligible,
and that the given values are exact. Assume that the normal stress on any cross section of a link
is uniform over that cross section. Force P is applied to the pin at C, at a location in front of link
CD. Also, at C, link CD is in front of link BC.
B
y?
0.467 m
x
(Final Answers: 35.9 kN, 4.29 kN)
C
P
0.813 m
D
0.572 m

Added by Faith T.

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