Hello, here I am making a guide rail on Solidworks and I have to do a force simulation (Xpress Simulation) on this part but I am blocking please I need help, basically I don't really see how to do it.
Thanks in advance
capture_rail_2.png
capture_rail_2.png
Good evening
You say ""I have to do a force simulation (Xpress simulation)""
You don't give much detail about where you're blocking
- After reading in the coffee grounds, we therefore assume that the rail is completely fixed!
- You say ""force simulation"" but you say nothing about this force that is supposed to be applied statically, somewhere on the rail, but where, in what sense, mystery!
- Is this force applied in compression (from top to bottom) or in tension, which would surprise us given the shape of the running profile: it is likely that the point of application is either a roller, or a larger area if it is a bearing or a pad. This defines the type of contact to be applied and therefore it changes the result a lot and especially what will have to be done to achieve it.
In addition, you should know that (Xpress simulation) only does static and above all has very very limited simulation functions, which means that you should not be too greedy for the expected simulation.
So can you complete your image , especially what is related to the application of a force of which we know absolutely nothing.
In addition, as a courtesy, it is customary to give a minimum of indication on the intended application, because in this case a rail is generally inserted into an assembly that serves a purpose.
Kind regards
Hello
Given the date and the request, it looks furiously like a study for a school project. So if I understand correctly, you have been asked for a simulation to validate your piece; You will therefore need:
* define the scenario of the study (the scenario, what is happening and where)
* define the maximum mechanical actions that are exerted in the system and on the part (tip: solidworks allows very well to do graphic statics)
* define the connections of the part studied (several possibilities and in general we take the most constrained case if we have a doubt)
* determine whether stresses or strains are to be considered
* simulate(s) and conclude
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Have you ever done a study with Xpress?
- If so, where do you block on this new study?
- If not, start by following the tutorial integrated into the software and then come back to your study and possibly to us.
SW Simu Xpress is pretty basic to use. For the connections, it's blocked or blocked, you just have to play with the separation curves to define the areas of application of the blockages and forces/pressure.
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Thank you for the answers, but in fact what I mean is that I don't know if there are forces that apply to it, in my study the rail is used to slide a slide on which there is a door. And the problem is that I don't really know what to put on, a strength. etc or other. I had already done a test with forces on SimulationExpress but it would give me an unlikely result, and so I would need to know what to do, and put forces. etc.
Hello
For the moment we don't see a piece, we don't have any other details, so we can only say of the general.......
What is the type of slide/rail contact? Is there a possibility of failure/overload? How is the rail supported? Should fatigue due to a moving load be taken into account? Etc......
Where is the overall plan / photo / sketch that allows us to discuss the case to be considered??
A priori if your rail is made of steel (S235 for example) of "normal" size (in the 40 mm high for a door of 2.2 m x 0.9 m) with a normal door (which does not weigh hundreds of kg) and rollers of diameter greater than 20mm in vulkollan or other polymer I don't think there is any need to do an RdM study; the same if you redo a commercial system by respecting the instructions......
"I don't know if there are forces that apply to it"
We may have to review the fundamentals before we want to do a simulation. So start by doing a static study of your system, room by room, this will allow you to implement what you have, normally, learned in techno/physics class.
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Hello
The first question to ask yourself and the answer will come from our student (not very assiduous in following up on his post by the way), is to know if he uses the right vocabulary.
He says this: "The track is used to slide a slide on which there is a door. ""
So we can deduce several things from this:
- If it is a door, there must be, if you want the opening to be easy, to have either two rollers or two skids.
- If they are pads, it is a type of contact that will be transferred to the guide rail, but with friction that depends on the material of the pad.
- Either it is rollers so the connector and a mass (the total weight of the door with its handle, its rollers and these roller holders) which will be distributed over two points which correspond to the two tangency points.
So you don't need to have been to a polyclinic to understand so far! BUT : because there is a but our student does not seem to know the difference between a mass and a force. Force is used, for example, when you don't have a cylinder pushing on a workpiece. When it is a part with a mass, you must indicate the mass (in kg or pounds) the direction towards the ground and activate the gravity function to have better results.
I hope that the students of @Maldoror00 (whom I find very kind to give all the information on skates and other materials) don't ask him this kind of dilemma because in that case I feel sorry for him ;-) ;-) ;-)
Kind regards
PS: @tous between us but don't tell anyone to do PEF simulation for a hanging door. Knowing that we only need one skid or a single roller to apply half of the mass on it and as we know (from Marseille) that if there is a problem there will be rather on the screws that hold the pads or rollers and that as we know both the resistance of the standardized screws and by the supplier the permissible load on the skate or the pebble. He doesn't even need a calculator to know if it will resist.
Well I'm going back to work!!! I sometimes wonder if RDM doesn't mean Ras Du Melon for some.
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