Truss analysis by method of joints: worked example #1
821.4 هزار بار بازدید -
8 سال پیش
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This engineering statics tutorial goes
This engineering statics tutorial goes over a full example using the method of joints for truss analysis. You first need to solve for the reaction forces by drawing a FBD of the entire structure. Once you have the reactions, you then need to draw a FBD of every joint. It’s the standard convention to draw unknown forces in tension, so that if you get a positive value for their magnitude, you know you have correctly assumed tension, and if you get a negative value, it just means that the member is in compression. Once you calculate an internal force in a member, it will be a known value for the next joint it touches. So if it’s found to be in compression, then just draw it in compression when you do the next FBD (meaning it’s pushing on the joint rather than pulling on it).
There is a typo in this video: The truss is 0.866m tall, not 1m. It's 1m*sin(60)=0.866m. Doesn't actually affect anything in the problem, it was just labelled wrong.
If you found this video helpful, please consider supporting my work on Patreon:
Patreon: Engineer4Free
Looking for more statics tutorials? Check out all of the videos that I made:
YouTube: Dynamics
Website: https://www.engineer4free.com/statics
Looking for practice problems with solutions? I also created a whole set of fully solved statics problems with step-by-step hand calculations:
https://www.engineer4free.com/statics...
Looking for software? I highly recommend checking out SkyCiv. They make a full suite of online structural analysis software and tools that are useful for both students and professionals, including calculators for beams, trusses, frames, moment of inertia and more. It’s great for checking your work:
https://bit.ly/skyciv-e4f
Lastly, don’t forget to subscribe on YouTube and join the Engineer4Free mail list:
Subscribe: @engineer4free
Mail List: https://www.engineer4free.com/newsletter
Thanks for watching, I hope it helps!
There is a typo in this video: The truss is 0.866m tall, not 1m. It's 1m*sin(60)=0.866m. Doesn't actually affect anything in the problem, it was just labelled wrong.
If you found this video helpful, please consider supporting my work on Patreon:
Patreon: Engineer4Free
Looking for more statics tutorials? Check out all of the videos that I made:
YouTube: Dynamics
Website: https://www.engineer4free.com/statics
Looking for practice problems with solutions? I also created a whole set of fully solved statics problems with step-by-step hand calculations:
https://www.engineer4free.com/statics...
Looking for software? I highly recommend checking out SkyCiv. They make a full suite of online structural analysis software and tools that are useful for both students and professionals, including calculators for beams, trusses, frames, moment of inertia and more. It’s great for checking your work:
https://bit.ly/skyciv-e4f
Lastly, don’t forget to subscribe on YouTube and join the Engineer4Free mail list:
Subscribe: @engineer4free
Mail List: https://www.engineer4free.com/newsletter
Thanks for watching, I hope it helps!
8 سال پیش
در تاریخ 1395/03/30 منتشر شده
است.
821,455
بـار بازدید شده