@rb1957
Of course, I think my assumption was not clear
I mean that I run the simulations with no pretension
Meaning that results are not even realistic. When I put some pretension, stress will be much higher in simulations
Hmm ok I will try to have some inputs about non liner analysis too
About the bolts, yes I know about combining allowable resistance. It is in EN 1993,but it only considers sear + tension. Bending is not considered in bolts. Maybe I am missing that
Yes, bolts are the only loadpath as faces are...
@DenverStruct You are right, thanks for the information. I realized I need some inputs about how FEM mesh is working, that article has been useful!
So thank you all for your answers. All of them have been useful
I will redo the meshing process with detailed analysis attending mesh convergence...
So I am designing some steel structure where exists a bolted joint
The "cylinder" (total 11 tons), is joint by 20 bolts (M22 10.9 grade bolts) to the "frame" or beams (S275 steel, HE 180M profiles).
The FEM simulation is predicting high Von Mises stress in the joints holes and the bolts...
@drawoh @rb1957
Thank you for your answers
About contracting this out, initially the company is not considering it. However, we have time to learn some inputs and develop this carefully
So,
Yes, 1 is braced and 5 not, but not for particular reason, we just thought it would not be needed, as...
Hello all,
I need to design an structure which is able to support a cylinder loaded with 10 tons of weight distributed around its external face
The current model is the one you can see in the pictures. A FEM analysis has been carried out using "Simscale" and this is the result.
I would...
Ok, thank you very much for the advice
By "siamese" you mean diameter?
Also, do you know any reference where I can check the rule? (not that I do not trust you, it´s because it will be documented If possible)
Thank you!!
Right, that is why I did not show in the first time
Basically my concern is about making the holes in a "so thin" sheet. I am not aware about "how big" can it be with no compromising the material
Hello, thank you for your response
Of course,
The idea is to create a steel support (blue) in a ring shape, containing lead blocks (grey) inside:
https://imgur.com/a/tJCNU
Total lead weight estimated is 14 Tons, while the ring middle radious is 1,125 m
Several analysis returns that the...
Hello,
We are designing an steel curved structure with a rectangular opened section, please see images.
It needs to be able to be opened for maintenance purposes. So, the joining of the different sheets which form the curved beam have to be bolted.
My question is how big can be the hole, so...
Thank you for the help
Well, actually FEM simulations seems to be ok (70 Mpa Von Mises), so yes it looks robust.
https://imgur.com/a/9K8c6
Also, we will think about the outside supports
However, we also want to make the manual calculations. So prex, thank you, I will look at it carefully...