Threaded Fastener Load
With a 5 lb preload, a bolt in a threaded connection experiences an externally applied load of 7 lb. If the bolt’s joint coefficient is 0.3, what is the total bolt load in lb?
Expand Hint
$$$F_b=CP+F_i$$$
where
$$C$$
is the joint coefficient,
$$P$$
is the externally applied load,
$$F_b$$
is the total bolt load, and
$$F_i$$
is the bolt preload.
Hint 2
Solve for
$$F_b$$
.
The load carried by a bolt in a threaded connection is:
$$$F_b=CP+F_i$$$
where
$$C$$
is the joint coefficient,
$$P$$
is the externally applied load,
$$F_b$$
is the total bolt load, and
$$F_i$$
is the bolt preload.
$$$F_b=(0.3)(7lb)+(5lb)=2.1lb+5lb=7.1\:lb$$$
7.1 lb
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