November, 2008
Solution to Problem 254 Statically Indeterminate
Problem 254
As shown in Fig. P-254, a rigid bar with negligible mass is pinned at O and attached to two vertical rods. Assuming that the rods were initially stress-free, what maximum load P can be applied without exceeding stresses of 150 MPa in the steel rod and 70 MPa in the bronze rod.
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254 Pinned rigid bar
Rigid pinned at O and attached to two vertical rods. Solution to Problem 254
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Solution to Problem 253 Statically Indeterminate
Problem 253
As shown in Fig. P-253, a rigid beam with negligible weight is pinned at one end and attached to two vertical rods. The beam was initially horizontal before the load W = 50 kips was applied. Find the vertical movement of W.
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253 Rigid beam supported by pin and rods
Solution to Problem 253 Statically Indeterminate Member
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Solution to Problem 252 Statically Indeterminate
Problem 252
The light rigid bar ABCD shown in Fig. P-252 is pinned at B and connected to two vertical rods. Assuming that the bar was initially horizontal and the rods stress-free, determine the stress in each rod after the load after the load P = 20 kips is applied.
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252 Bar held horizontal by two rods
Solution to Problem 252 Axially Indeterminate Members
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Solution to Problem 251 Statically Indeterminate
Problem 251
The two vertical rods attached to the light rigid bar in Fig. P-251 are identical except for length. Before the load W was attached, the bar was horizontal and the rods were stress-free. Determine the load in each rod if W = 6600 lb.
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251 Bar supported by two rods
Solution to Problem 251 Axially Indeterminate Members
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Solution to Problem 250 Statically Indeterminate
Problem 250
In the assembly of the bronze tube and steel bolt shown in Fig. P-250, the pitch of the bolt thread is p = 1/32 in.; the cross-sectional area of the bronze tube is 1.5 in.2 and of steel bolt is 3/4 in.2 The nut is turned until there is a compressive stress of 4000 psi in the bronze tube. Find the stresses if the nut is given one additional turn. How many turns of the nut will reduce these stresses to zero? Use Ebr = 12 × 106 psi and Est = 29 × 106 psi.
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250 Bolt and tube assembly
Solution to Problem 250: Statically Indeterminate Members
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