Double shear

[@TraderOmar]

Thanks I don't how could I never hear about this channel

[@Engineer4Free]

You're welcome! Check out all the MoM videos I did at engineer4free.com/mechanics-of-materials and tell some friends so that they know too 🙂🙂

[@jacobhouston1655]

What's the difference between normal stress and shear stress? Seems like the exact same thing, Force/Area for both.

[@Engineer4Free]

Stress is force/area, so you are right in that sense. It's the orientation of the force that is the difference. With normal stress, the force is normal to the surface that it is spread across. With shear stress, the force is parallel to the surface that it is spread across.

[@haziqkahar434]

10kN internal force. Means P-P/2 right?

[@wsanyaqoob6957]

Why didn't you multiply the area by 2?

[@Mr_cat_lord_of_the_underworld]

thats what i'm wondering too

[@Attalla-t9b]

Wait... i don't really get it. I have a question, so the average shear for two forces acting on the same rod would be 20/A. And in this video, to calculate average shear stress for 3 forces acting on the same rod, we can pick a particular side of the rod and the shear stress then would be P/2A, right? Wouldn't that only make it some-part-of-the-rod average shear stress, and not for the whole rod?

[@HuseyinerBektas]

sir why you used P/2 as your applied force to calculate the double shear stress

[@1crida1]

Remember - P is an equal and opposite force applied to the member for it to be in equilibrium. Since there are two plates in the same direction, the force, P, is split in half. If both plates had the total force of P, there would be an imbalance on the member.

[@HuseyinerBektas]

@@1crida1 thank you

[@itsthesame]

Isn't there an internal moment at the shear plane too? Is it negligible?

[@akshaysangale9622]

How many cutter are required for double shear ?

[@jefftsang1345]

Why is P/2?

[@yamtam2334]

I have a question about a situation of double shear where I had to find the minimal diameter of a rivet for it to withstand a given bearing stress, then the minimal diameter for a specific shearing stress. after I calculated those I had to answer which of these diameters should I pick, how do I answer that?

[@Engineer4Free]

In that situation I would select the larger of the two. Lets say the minimum diameter that you calculated for bearing stress was 10mm and the minimum diameter that you calculated for shearing stress was 12 mm. If you select a diameter of 10mm, then you will not meet the minimum diameter requirement for shear. Does that make sense?

[@yamtam2334]

Yes thank you :D it was the correct answer as well according to my teachers, I was just confused because I read that bearing comes before shearing so wondered if it means that shearing can't happen without bearing and the bearing diameter would suffice.

[@markfarrens7733]

Where have you been all my life

[@Engineer4Free]

I dunno but welcome to the party

[@amiyaranjansahu1138]

Thanks Sir for replying me We hope you will do soon

[@randallhoeft2358]

How large of a gap needs to occur for clearance or adding washers between the planes which then you have to calc for bending instead of double shear?

[@ronaldgaray1562]

It’s kPa right?

[@amiyaranjansahu1138]

Sir, many many thanks for your effort for us really sir your video is very helpful for us we are here requesting you kindly upload some video on thermodynamics . Sir please reply

[@Engineer4Free]

I plan to do a full course on thermodynamics... hopefully within the next year!

[@musttobewild8355]

Thanks.

[@Engineer4Free]

Thanks for watching! Make sure to check out the rest of the free course at engineer4free.com/mechanics-of-materials :)