The bracket shown in the figure is bolted a ceiling beam to support a fluctuating vertical loadimposed on it. The bolts are -in coarse-thread SAE grade 8, tightened to recommended preloadfor nonpermanent assembly. The stiffnesses have already been computed and are kp=4 Mlb/inand km = 16 Mlb/in.Laad lineF.Steady stress(a) Assuming that the bolts, rather than the welds, govern the strength of this design, determinethe safe repeated load that can be imposed on this assembly using the Goodman criterionwith the load line in the Figure and a fatigue design factor of 2.(b) Compute the static load factors based on the load found in part (a).(ie. Yielding factor of safety, Load factor of safety and factor against joint separation)

Givenbolt specification 34 in coarse- thread SAE grade 8preload for non permanent assembly)From the…

imposed on it. The bolts are -in coarse-thread SAE grade 8, tightened to recommended preload for nonpermanent assembly. The stiffnesses have already been computed and are k,=4 Mlb/in and km = 16 Mlb/in.

imposed on it. The bolts are -in coarse-thread SAE grade 8, tightened to recommended preload for nonpermanent assembly. The stiffnesses have already been computed and are k,=4 Mlb/in and km = 16 Mlb/in.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.3.5P: An inflatable structure used by a traveling circus has the shape of a half-circular cylinder with...

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Concept explainers

Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.

Question

The bracket shown in the figure is bolted a ceiling beam to support a fluctuating vertical load
imposed on it. The bolts are -in coarse-thread SAE grade 8, tightened to recommended preload
for nonpermanent assembly. The stiffnesses have already been computed and are kp=4 Mlb/in
and km = 16 Mlb/in.
Laad line
F.
Steady stress
(a) Assuming that the bolts, rather than the welds, govern the strength of this design, determine
the safe repeated load that can be imposed on this assembly using the Goodman criterion
with the load line in the Figure and a fatigue design factor of 2.
(b) Compute the static load factors based on the load found in part (a).
(ie. Yielding factor of safety, Load factor of safety and factor against joint separation)

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