Muller-Breslau Principle for Influence Lines - Intro to Structural Analysis

[@chrisaprile813]

I have watched maybe a hundred different people try to explain influence lines and I was always left with doubts. You cleared everything up in this video session. You are an amazing teacher.

[@StructuresProfH]

Thank you!

[@flamingfirenetwork]

I was only at 1 minute 59 sec when i angrily hit the suscribe button I have watched tons of videos, but the way you explain the shear and moment shape gave me a clearer understanding of what I have been watching since. Thanks so much sir

[@sebastiaandevylder978]

Wow, the way you just explain influence lines with this easy example helps me a ton. I had some difficulty in visualizing it and now they are all gone. Thanks!

[@deema1737]

How do we know that the moment IL is going down rather than up ?for example at 7:40

[@davidk.6436]

Dear Prof. You saved my structural test! Love you so much from HK!

[@SenodhJayasinghe]

Great video !!! I cant express my gratitude enough. you made everything so perfectly clear! :))

[@flamingfirenetwork]

I am already at 4 minute and honestly, I need to thank you again. You really understand the principle Best video on IL ever

[@StructuresProfH]

I'm glad I could help!

[@anthonysilumelume5763]

At 8:00 minutes on the drawing of the moment influence line, it formed a valley but according to your explanation, it shouldn't form a valley

[@StructuresProfH]

Sorry, perhaps I was not clear. When finding a moment influence line, the location of interest will always be the highest point (or tied for it) in that nearby region. So there are technically three ways this can happen: (1) an actual peak: /\ (2) a slope up followed by a plateau: /͞ (3) a plateau followed by a slope down: ͞ \ Note that in all three cases, the change in angle is always happening in the same direction so we say that this "peaks" at the point of interest. Using a similar definition, a "valley" would look like \/ _/ or \_. In the drawing you reference, the left hand side is fixed, which forces the slope to be zero. Meaning this influence line looks like option (3) a plateau followed by a slope down. We do get a valley of course, but not AT the location of interest, but rather AFTER the location of interest.

[@PradeepKumar-vn1xq]

Thank you so much Prof. Very practical experience today I had.

[@Apoorv111]

Very well explanation sir..👏 👏

[@StructuresProfH]

Thank you!

[@dominicmahinay7718]

6:46

[@JuanRomero-to1rh]

Great video

[@harshjha7266]

RESPECT +++++++++++++++++++++++++++++