Bolt and Member Stiffness - Bolt and Nut Selection - Example 1

[@martinoluoch7891]

I really hope your channel grows exponentially

[@LessBoringLectures]

Thanks, I hope so too! Share with friends!

[@Ashtonio15]

The equation for Kb shows the value of 'At' as 115. This is the value of 'At' for an M14x2 bolt from Shigley's Table 8-1. The value for an M14x1.5 bolt is 125. Final answer for Kb is 926.4.

[@LessBoringLectures]

Thanks for the note!

[@muhammetfurkan6818]

Have you ever thought sharing the lecture notes ( and of course also the examples ) in pdf form? It would be very helpful for engineering students.

[@EliteObeid]

If the bolt is completely threaded is ld = lt?

[@markmatta1936]

I got this problem in my PE: MDM exam this week
*Givens:*
Bolt (E = 10 x 10^6 PSI)
Shank: A(Unthreaded) = 0.565 in^2 & L(Unthreaded) = 1.2 in
Thread: A(t) = 0.29 in^2 & L(t) = 0.8 in
*Answer:*
K = E x A / L
Kb = (Ku x Kt) / (Ku + Kt) = 2.05 x 10^6 [lbf/in]
*Values changed from that in the exam for copy rights only ;)

[@herzaryo1340]

Sir, what textbook do you use as a reference?

[@Khan-zd3lo]

it's Hex nut so H is 12.8 from table A-31 Shingley

[@asmfaruquehossain398]

Hello Mr, Lecturer you used some Math number that number there is no reference ? for nothing lecture

[@tangamtamil]

Share that Notebook

[@bbbf09]

Unfortunate using K - as 'K' its also used dimensionlesss factor in calculating torque vs preload force.