What about a beam fixed on both ends?

when you at 5:35 make that statement, how was that derived? i tried using the known curvature - moment relation to find a slope at B due to the moment "Mab" at A where i got that slope to be: θ(B) = Mab*L/2EI and using the virtual method i got the fbb' = L/3EI, and finally plugging that into the compatibility equation i got the Mba = (3/2)*Mab, so obviously this doesn't match. But then my question would be, is this a correct approach or just wrong?, and if the latter, whats the correct way?

At 2:58, can you explain further? Are joints at any supports not zfm's because the support is a reaction?

You are incorrect, in the first problem, CE is not a ZFM, because you have a 5KN external load

Thank you, why is the deflection due to real load uses moment from virtual unit load?

Saludos estoy analizando una cercha fink con angulo doble pero al correr el modelo los resultados en las reacciones son diferentes en el peso propio de la estructura ?

I hate these problems with two blocks, especially when there are a few scenarios.Thanks for explaining.

Thank you so much!! I'm preparing to take the FE exam and you made zero force members very clear.

Sir you have stopped making videos. There is almost 95% work left undone by you both in structure analysis I and II. Any reasone for not making any video.

great video, thank you very much. I'm surprised more people haven't commented or liked.

This guy is wonderful

Isn't this a determinate truss? How do we approach a problem with indeterminate truss??

Thank you for this video, just wanted to ask whether the horizontal unit load applied is always to the right or could it be applied either side?

Really useful. Clear explanation and good and easy example. Thank you

correction - 9:29 off- diagonal terms should be zero, NOT -12/L^2.

nice tutorial, but how is that different from the force method?

Richard Ayoade is this you?

34:45 other solutions include the unit load in AC to calculate the flexibility of AC. This gives a more accurate solution, but the compatibility equation is less clear.

this is assuming that your dynamical system is linear and your M, K and D matrices does not change with time, correct?

Damn love the intro

How can I check if this deflection is acceptable or not?

how do we get thoses constants to calculate a1 a2 a3 ... ?

I want to ask a question , to determine whether a structure is stable , do we need to make sure both internally and externally do determine its unstable or not ? Or we just need to consider it externally?

Thank you Program Mechanics. I’m unsure if it’s my Bluetooth headphones, but I’m getting a slight humming static (sounds like an airplane’s engine before taking off) as I’m listening to the lesson. This video has been helpful.

Thanks too much

Hello, your force for the middle support you found to be -171 kN therefore you should draw R_By going downwards at 35:30 Did I misinterpret that? EDIT: I realize my mistake, we assumed the unit load going down so a negative value means it goes upwards

Please could you do another video on multiple loadings as some of the steps are a bit ambiguous.

14:40 We eventually look at horizontal equilibrium of the entire structure to generate an extra equation, but need to get the reactions first from FBDs of the columns

Poggers video

The N at BD, should be - 11.67 Thanks for the tutorial!

3:47 error P = F/A

Could you please tell, where do we perform Newton-Raphson iterations in this implicit algorithm.

Hard to follow when constantly scrolling down, thus being unable to simultaneously see the diagram and working out. Solution could be to zoom out when working out is completed or zoom out as doing working out.

Hey! Thanks for this, this is helpful Can you provide the code?

Can you please explain why FEMf=0 but FEMn is not equal to 0 though both are not fixed ( I understood about FEMf=0)?

Thanks for your lecture! But there is a typo,,, In 8:26 14:00, you have to time delta_t at the end. Becuase V(+dt) = V(t) + [(1-beta)... + (beta)...] * "delta_t". It was a helpful lecture. Thanks Again!!!

Any video about the determinacy of compound structure and specifically king-post truss beam.

Great video. Any formula for frame structure to check the stability?

Good detail of the process. Very unintuitive however that summing the axial displacements would result in a total deflection in the direction specified.

Sir is it possible to solve this using a matrix?

Thank you so much it's perfectly explained... Appreciate your time and efforts

On the BD beam, there is a positive moment or negatif moment?

Hello. When you explained how to calculate the flexibility coefficient, is it possible that there is a small mistake in the notation in the integral? You wrote m(x)*m(m) in the numerator, shouldn't it be M(x)*m(x)? Or is it m(x)*m(x) maybe? What you're saying and what you're writing is different. Thanks.

Wow that was very helpful , specially going through all the details. Thank you so much!

Great video greetings from germany

DETERMINE ALL THE MEMBER FORCES IN THE LOADED TRUSS BY METHODS OF JOINTS . POSSIBLE TO SOLVE THE PROBLEM

great tutorial! although it kinda too slow for me

Do you know a software for qualitative analysis? I only find software which require specific quantities but I need parameters

can you help me to find the moments ??