Your file is unusable because you have only attached the ASM! But if there are no parts, it is impossible to make a simulation. You also didn't attach the parameters you used to do your simulation.
When you say a force of 1600 N, you have to say where the force will be applied and for a staircase, especially with few support points, this is certainly not the value that should be used and it is better to use a load than a force in your case. (We can discuss these things later)
Brief! Make a ==> File ==> pack and go Specifying that you attach the results of your simulation studies or at least the parameters.
I'll go back! Do ==> File ==> pack and go ==> with all the files without exceptions==> Specify that the output must be done in a ZIPfile ==> You then have only one file that you can attach on the forum.
We know how to unzip files without any problem.
Kind regards
PS: for the error message it's normal! You can't put force on an edge because the software won't know in which direction the force should be exerted, especially if you don't indicate the direction of the force with a coordinate system. In any case, in your case, this is not the right method since the mass is exercised flat horizontally from top to bottom and this on one or more steps.
1°) you have to review your model because you have interference between your parts, you have to correct this with Tools ==> Evaluate ==> Interference detection.
2°) the model must be simplified by removing all the wooden parts. Even if the 30 mm thick wooden steps undeniably contribute to the solidity, they cannot be used for the simulation because the strength of the wood (of wood in general) cannot be modelled.
3°) all the sketches must be error-free (remove hidden sketches that have errors).
Can you resend the file having removed all the interferences and errors in the sketches. Anything made of wood is useless for the simulation, so remove them. In general, a simplified file is made to simulate independently of the general design when there are heterogeneous materials.
Kind regards
PS: I will refrain from any comments on the design itself!
1°) There are too many flaws in your model to do a proper simulation.
2°) There are interferences that do not appear in the detection of interference on the global asm but that appear when you want to make the mesh. To really detect them, you have to select the subsets in the large ASM. I don't know why it doesn't work any other way
3° ) the most serious thing is that you put constraints on your steps in relation to a 3D sketch and not between two parts: the step and the "bridge support" parts. If you made classic constraints between two objects, you wouldn't have the risk of having disjoint or interpenetrating objects I understand that for the overall plan in metalwork where we don't work below the mm, your assembly is correct but it doesn't have it for simulation, it's not good. (that's why I told you to make a simplified twin)
4°) you have sketches that are not entirely constrained (EP-Support for the bridge walk) which means that you have a space between this sheet and the step).
5°) You have used the beam mode for all your 100 mm tubes except that some are too short to be considered as beams. That's why we have to transform them into volume. 6°) To have a better view of the deformations after the simulation, it is better to pass all the parts (without exception) as volume (attention to volume and volume, it is not the same thing).
In fact, it all depends on what you want to check
If it's only the 100 mm tubes, just remove all the steps and platform and test only the forces of the tubes (in a balanced staircase ????).
Make all the changes in the whole asm and repost everything.
Kind regards
PS: From what I see of your design, the problems will not be on the tubes alone but on the steps and especially on the platforms, including the bottom one which I don't give much. There are also ....... (ZUT I swore to myself not to say anything about the design! Phew, I held back almost in time). poof poof!
I appreciate all your efforts, your advice and your help and I would like to thank you mm if I can't solve this problem.
Well I corrected my design as you indicated in your last msg except that I don't make the tube 100 mm in volume because I can't and if I have to do it I have to redo the whole design.
I carry out the study again I manage to make the mesh but when I start the study execution it shows me MSG next
You have not taken into account my remarks on the interference of the sub-assembly "EP-M2 structure Tube 100", it is the two frames that are not correct. I corrected the part so I could continue!
You say ""except that I don't make the tube 100 mm in volume because I can't and if I have to do it I have to redo the whole design.""" This is incorrect, you just have to make the modification only in the Simulation part (see the attached image) Indeed, the simulation and the model are independent for some things. Look at why I told you to process some parts or all parts in volume.
Your way of putting forces is not good at all because you declare 1600 N X 4 for each step instead of 1600 N for one step, etc.... etc......
I'm looking at what I can do and I'll send you the file, it'll be easier.
Kind regards
PS: if you have to attach photos, attach them because on the screen they are unreadable because they are too small
Often I wanted to start by thanking you for the effort you make to help others. I wish you well and success in your professional and social life.
Well I find it very difficult when running simulations on the whole assembly mm if I recorrect the last point you mentioned to me, which is why I chose to do the study on the market independently than on the main structure "Tube 100"
Attached is the simulation study on walking, thank you for illustrating the readability of the result on the diagram. "About me this means that the step will deform by a maximum of 4 mm when applying a load of 800N (equivalent to the weight of a human being of 80 Kg in mass) and as for the diagram I don't know how to read it.
Attached is the picture of the alarm displayed after making the mesh. I correct the error with the help of solid interface displayed on the right of the screen but I can't get a result to finalize this project. Thank you for trying to carry out the simulation study on the structure 100 and tell me at what load will have failed.
To be able to answer the initial question, I simplified the model because otherwise it takes hours without adding value.
So I worked on the tube alone without the steps and especially without the equivalent of the stringer. However, to better simulate the areas on which the steps rest, I have delineated areas with dividing lines. I applied the loads 900 kilos in total (see attached images) on the areas delimited by the dividing lines. I applied masses and not forces (since they are not forces but the weight of people.
We could say that this simulation reveals only 4mm of deformation (See the images and the video). In fact it will be less because the "pseudo silts" will stiffen the tube precisely in the direction of the simulated deformation. On the other hand, what the simulation does not guarantee is the quality of the welds on beveled cut tubes.
Kind regards
PS: PLEASE NOTE that this simulation is only indicative because it is based on only one minimum scenario and does not take into account the intermediate levels which are a little more than 1m², nor the impact of the guardrails, nor the wooden cladding which adds weight (but also and above all stability). It seems that there are at least 30 tubes of 40 x 40 that are useless AMHA.
