BOLT TENSION and Tension at Non-Permanent Joints in Just Over 10 MINUTES!

Bolt Load
Preload - Pretension
Torque to Bolt Preload Relationship

0:00 Bolt Failure
1:09 Preload Deformations
1:59 External Load Deformations
2:46 External Load Fractions
4:06 Graphic Representation of Loads
5:50 Fastening Torque vs. Preload
6:47 Collar Diameter for Torque Calc
7:37 Simplified Version of T vs. F
8:09 Preload and Load Example

Number of Nut Turns to Preload Relationship Video:

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

Next Video: Factors of Safety for Tension Joints with Preload in 13 Minutes

Proof Strength and Proof Load Video:
Factors of Safety for Tension Joints with Preload in 13 Minutes

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Other "Mechanical Engineering Design 1" Links:

[vanzz]

Man, props to the great editing and explanation of this topic!
I’ve seen PAID courses with way less quality than your video
Keep up the amazing work and I hope I can keep on watching your videos
You just earned a new sub 😎

[forsakenV]

My goodness.. your tutorial is awesome !
Thank you !

[sher.]

Thankyou for your explanation, It is going to be helpful for my exam tomorrow.

[prashantbisht]

Thank u very much ... Now i can solve all the gate questions

[huuhungtran]

thanks you so much for this useful lecture.
i just have a question about the way to define Pb load based on External load ( 03:44 )
My understanding, for the pre-load condition, Bolt is under tensile load and members are under compression load.
Then if we apply external load in tensile direction ( tensile load ), then members will be released the force.
Mean that : force in bolt = Fi + Pexternal
and Clamping force in plates = Fi - Pexternal
Then it should not has C factor - Stiffness constant of the joint.
please correct me if i was wrong.

thank you so much !

[CarolineCA]

Thank you for your hard work! Do you have example where it asks for calculations finding the type of bolt (known weight, and external force)?

[rishabhjain]

What software are you using to present all these items?

[marwanabdelhamid]

would you give us the slides or pdf to just keep up, and thank you for the videos.

[hazn]

Hi, thanks for the great video.

which drawing pad are you using sir ?

[kristopherlowry]

Great job explaining! Is there a reference book to this information?

[axeld]

Greetings! Another amazing lecture, thank you. Just one question related to the final example, about the value of the fc friction coefficient. Are both (fc and f) 0.15? Shigley do not show the value for the fc coefficient in a steel-steel combination.

[joshpineda]

The equation shown at 5:42 (Fm = Pm - Fi), Fm is different from what you are stating and what is seen on the graph (Fm = Fi - Pm).

[jimf]

Do not let this person or anyone who believes this near any substantial engineering project. This is the same mistake made in Eurocode 2 some years ago and has probably resulted in thousands of building and bridges across Europe being improperly designed.