The 5/8″-11 UNC bolt shown in the figure is used to clamp three layers of material
together. Useful material properties may be found in Table A-5.
a. If standard washers are used, what is the member stiffness? If a 3″ long bolt is used,
what is the joint constant?
b. The torque coefficient is K = 0.25. For a reusable connection, what bolt torque
should be specified? What bolt preload does this generate?
c. If an external load of 750 lb is applied, what are the Load Factor and Joint Separation
Factor? Are either of these values an issue?
d. Suppose the thickness of the top layer in the figure below, the Aluminum, is changed
to 0.5″. What is the new member stiffness?
together. Useful material properties may be found in Table A-5.
a. If standard washers are used, what is the member stiffness? If a 3″ long bolt is used,
what is the joint constant?
b. The torque coefficient is K = 0.25. For a reusable connection, what bolt torque
should be specified? What bolt preload does this generate?
c. If an external load of 750 lb is applied, what are the Load Factor and Joint Separation
Factor? Are either of these values an issue?
d. Suppose the thickness of the top layer in the figure below, the Aluminum, is changed
to 0.5″. What is the new member stiffness?
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