A note: This method is best suited for determinate influence lines. For difficult, indeterminate beams computer software is best to determine influence lines
i know Im randomly asking but does anyone know a trick to log back into an instagram account? I was stupid lost my password. I would love any tips you can offer me.
It's always best to have a sense of the deflected shape before you resort to computer programs. Otherwise you'll never know if they are giving you garbage.
Can you make an influence line video for indeterminate beams? It'd be nice if it included a general overview considering shear and moment IL's at reactions as well as supports and spans in between. I'm having a hard time finding good resources for IL's for indeterminate beams. My textbook is brief to a fault. Seems like there would be a finite number of realistic/common combinations of IL's for indeterminate beams.
Thanks for the comment. Since the influence line is a measurement of the response to a 1 kN unit load, 1 will be the maximum rise. If the run is the same (length of the beam), then the slope must be the same. Hope that makes sense.
How do you choose the direction for the unitary displacement? I'm trying to apply this method for a single fixed support beam, but the influence line for the moment on support is upside down
Not exactly, but for determinate structures the moment influence line is linear..once you find it at one point you can just use the slope to determine it at other points as well.
when I asked my professor in the class if we can think about that 1kn force bending the beam so that we can understand how the influence lines should be, he said no you cant. I saw that you are bending the beam with the ruler and imagine how the beam reacts to the force. i think i was not that wrong that moment??
A note: This method is best suited for determinate influence lines. For difficult, indeterminate beams computer software is best to determine influence lines
i know Im randomly asking but does anyone know a trick to log back into an instagram account?
I was stupid lost my password. I would love any tips you can offer me.
It's always best to have a sense of the deflected shape before you resort to computer programs. Otherwise you'll never know if they are giving you garbage.
Wow! What took my professor 4 lectures to completely confuse me on, You just helped me understand it better in 13 minutes.
People on youtube are 100 times better at teaching than university professors
So much easier than the way we were taught..thank you..
Great to hear A DC!
thanks you for making these complicated things so simple
Thanks for the compliment, glad you enjoyed it!
THANK YOU FOR FINALLY MAKING ME UNDERSTAND 😃👍
Can you make an influence line video for indeterminate beams? It'd be nice if it included a general overview considering shear and moment IL's at reactions as well as supports and spans in between. I'm having a hard time finding good resources for IL's for indeterminate beams. My textbook is brief to a fault. Seems like there would be a finite number of realistic/common combinations of IL's for indeterminate beams.
4:33 why is the slope equal?
Thanks.
Thanks for the comment. Since the influence line is a measurement of the response to a 1 kN unit load, 1 will be the maximum rise. If the run is the same (length of the beam), then the slope must be the same. Hope that makes sense.
AF Math & Engineering 👍🏻
Amazing...Thank You Sir
Is this method the same as Mueller-Breslau?
your amazing bro
Shouldn't there be a peak @ C point for Cy? in second question and then decreasing slope towards point B &C? Kindly elaborate
How do you choose the direction for the unitary displacement? I'm trying to apply this method for a single fixed support beam, but the influence line for the moment on support is upside down
Thanks for the question man, this is a good one. I'm going to make a video shortly on this topic, stay tuned for it!
thank you!!
it was really helpful thank you..
Sara Zadran great Sara!
Thank you
How to have sense of deflected shape while calculating shear. Can abybody explain?
Does this method work for influence lines of moments?
Not exactly, but for determinate structures the moment influence line is linear..once you find it at one point you can just use the slope to determine it at other points as well.
Hi! Could you please make a follow up video talking about the shear and moment influence line:) thank youuu
How do you apply for trusses?
thats a different topic, perhaps well make a video in the future on it :)
God bless your soul
when I asked my professor in the class if we can think about that 1kn force bending the beam so that we can understand how the influence lines should be, he said no you cant. I saw that you are bending the beam with the ruler and imagine how the beam reacts to the force. i think i was not that wrong that moment??
Awesome!!!
Thanks!
You only needed to do the first calculation for the first beam, since the total change in shear is already known to be 1kN.
U write poorly
Thank you