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

Bolt Stiffness
Member Stiffness
Frusta
Pretension - Preload
Grip
Threaded Length
Unthreaded Length
Tensile-Stress Area

Main Video: Bolt (Fasteners) and Member Stiffness in Just Over 10 Minutes

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Other "Mechanical Engineering Design 1" Links:

[Ashtonio]

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.

[martinoluoch]

I really hope your channel grows exponentially

[muhammetfurkan]

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.

[markmatta]

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 ;)

[asmfaruquehossain]

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

[Khan-zdlo]

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

[EliteObeid]

If the bolt is completely threaded is ld = lt?

[herzaryo]

Sir, what textbook do you use as a reference?

[bbbf]

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