Creo Simulate: Contact Analysis with Finite Friction

welcome everyone to product one's youtube series today we're looking at creo simulate focusing on contact analysis with finite friction uh so we have done a simulation video in the past if you haven't please check that out first before looking at this one so what we are looking at here is a scenario where you having for starters two components that are going to collide so what we're going to be having here is this brass component coming in and colliding with this aluminium component so that means that this surface here will open up to allow this to actually slip so what we've done is we sort of like representing only half of the geometry for the sake of time in this analysis let's get started the first thing that i'm going to start with is assigning uh constraints please bear in mind that for this particular analysis we've already defined the material for both components so what i'm actually doing now is i'm applying different constraints for this particular design both for the brass component and i'm also going to do uh what we call a constraint in this cutout the reason for this is i'm going to show you how you can create a measure where you can calculate the force required to push that object through so i'm going to define just a basic constraint on this and here's what i'm going to do i'm going to free up x and y sorry x y and z and then before i forget i'm just going to jump straight up and create my force so let's call it f clip or whatever i'm gonna call it underscore because i already have one existing i'm going to say i'm looking at a force but i'm going to look at the reaction at a constraint magnitude that i'm going to be measuring is x so that means that the direction of motion in this instance that is linear to this is x so now that i've defined my measure i'm going to leave it at that the one other thing that i want to start inspecting is this distance over here so this distance between those two edges is 17.6 i'm going to use that distance that's why i'm hoping you'll see now in a second so let's start by firstly assigning a boundary conditions or constraints on this uh copper component so here's what i'm going to be doing i'm going to be specifying or freeing up those two properties and last but not least i'm going to now assign only z to be fixed for x i'm going to set up what we call prescribed constraint so this is where now i'm going to say the direction in which x is acting so if you were to look x is positive going that way but what we want in our scenario is a value going that direction so that will give us a negative value so because we're going uh the opposite direction so we've got now minus 17.5 so this will move that distance so that's how you set up what we call a prescribed uh constraint so you can create what you call a mesh i always tell the guys that it's not necessary for you to create your own mesh and size of the elements but it depends on a requirement so if we were to stick or rely only on the on the mesh that is generated by the system by default you see that we'll have 822 what we regard as tetrahedral element and total number of edges and faces so you can make modifications to that let me show you how so i'm going to take a component be it let's take this one here i'm going to say this component have it to have the size of tetrahedral elements to be four millimeters however you can say in that particular context i know that everything else is four millimeters i'm talking about the elements now but make that surface to be true because i want to maybe have a couple of of elements there and maybe here let's make it one so if we were to create a mesh for this you'll see that it will take slightly well not that long but you now get to have so many tetrahedral elements and so many faces and you can see the variable sizes of those elements so you can also make different types of elements if you want to so if you were to take something like a map mesh i can select two surfaces of interest and define where i'm going to be subdividing this so what that gives you is what really got as brick elements so you can tell there i have bring elements and of course you can change how this is viewed as well you can say increase the shrinkage and just to exaggerate the gap between elements as well maybe for reporting or whatever the cases so you can do different types of elements inside trio simulator so the most important thing to do when you doing what you call a contact analysis is the following you you can specify surfaces that are going to collide in this case the default is free we're going to say make it contact however i want to be able to specify what we call a static coefficient of friction and that's why i choose finite friction day so i've actually stipulated contact interface between that surface and that small surface state i'm going to repeat the process but then choose the two big surfaces because they are bound to also be in contact later on and what simply means that i'm going to also choose here finite friction and specify the same coefficient there now we are just about uh ready all that we need to do now is define our analysis so we've got a measure here and we have our interfaces that we've set up and our prescribed constraint so here's what we're going to be doing so i am going to specify a brand new static analysis i'm going to just modify this for the resolution side of it and you can actually set up a values be it from experimental sessions or just adding a couple of rows and columns where you define a time step for your study we know that i want to check at 0.5 and maybe at one that's a second and you can even specify the magnitudes if you you want to all right now that we will define this i'm going to say let's not make it a single pass i'll just make it a quick check so that we speed up uh this particular analysis and i'm going to say user defined and i can specify the total number of steps and i can say make them equally spaced so that is all that you need to do in defining what we required as a contact analysis so i'm not going to run this analysis for the sake of time i have ran this one here and i will just show you the result so if i were to pull the result window and obviously there is our dialog box i can toggle between a couple of things i can say i want the results to be deformed but i also want to animate them so that means that from a displacement point of view this is what i have so you can see that there's a certain size of displacement that's happening and i can modify this i can say look i don't want to look at this placement i want to look at stress i can say i want to look at stress and moreover i want to actually showcase the elements as well in the result window so you can do something like that as well right so you will get something that looks similar to this and that is how you create contact analysis with finite friction of course we can also showcase the graph that we had so for an example if we were to interrogate a the measure that we were dealing with so that's the measure in in our case and what we will actually do is we want to compare this measure with maximum displacement on x and this here shows you the force needed to snap through this particular component so this is how you do something as complex as this with simplicity and with ease and you can see that it's in intuitive inside creo simulate if you've got any further queries please do not hesitate to contact us don't forget to subscribe and like the video until next time goodbye

Channel: productONE Solutions

Views: 4,075

Keywords:

Id: fPsuscLlnyA

Length: 10min 29sec (629 seconds)

Published: Fri Oct 09 2020