FreeCAD FEM VS SolidWorks FEA Simulation - How Do They Compare?|JOKO ENGINEERING|

I would like to test this table in an analysis and freecad fe m vs SolidWorks Simulation f EI and if you'd like to follow along you can download this table for my grab cat account so let's get started I'm going to run the FE M or bench and start constraining some faces as I do this I'd like to also tell you that the main objective of this study is to check out where the points lie on the stress plot and this placement that free cap puts out and compare it to SolidWorks I am NOT a career analyst and so I will do my best to make everything the same between freecad and Saltworks I can't guarantee that there's not some place that I may have changed and so we're going to look at the quantitive numbers of maximum stress and things like that indulgently but I won't guarantee that they're perfect so let's use a force acting on this face and we'll reverse the direction going downward want to make that force 150 Newton's okay so we have anchored faces and a face with stress on it I'm going to assign a material I'm gonna make that c10 steel there's C 10 and now we need to add in a mattress will highlight my entire body put in a Jean mesh my maximum element size I'm gonna make 50 and then my minimum Michelle my size will be 0 we're going to apply that and you can see we're meshed up here I always get this warning it seems like no matter what I mesh so I'm simply clicking ok from here I'm gonna highlight my mesh by using the space bar and hide my body by using this face bar so now we're only looking at mesh and we should be ready to run the analysis inverting the mp5 and let's run calculus with our results loaded let's take a look at bond Mesa stress as you can see we have an area of stress here and a little bit here a little bit in here but we've come to sort of a maximum at this point and on the other leg at this point with considerable amount of stress right there per the scale it looks like our max stress is going to be seventy one point six kilo Pascal's and let's look at our displacement as you can see it displaces as we would expect and I'm going to show my displacement as you can see there is not much displacement happening so I'm going to factor this up as high as I can and to give our slider a medics there we go and that is kind of animation of what our displacement looks like if you were exaggerated so let's run this in SolidWorks and see how we're doing so I'm going to open the same part as a stunt file and we have no faces or gaps so the first thing they'll do is set material I have taken the material properties out of freak adds and seat and steel and put them in a custom material that I made in SolidWorks converted to Newton meters of course so that this should mirror the properties of C ten exactly as what freecad had let's go into the simulation tab will create a new study and just like that we've done in freecad we're going to use a static analysis it's listed in there but got static and now let's take a look at fixtures and we're going to create a fixed geometry on these bottom faces let's put an external load on there a force as we had done in free cat we're going to make this 150 News and now make a mesh I want to mesh it the same way that I've done in free cat we're going to open up the parameters standard mesh and this should be the max size which will do 50 millimeters how much conversed inches and then you have to have a positive value so in here we're going to go with a foul I could probably do Oh point one and now we're meshing so we have a mesh to what we hope to be similar dimensions as to a free cat head I think the mesh has an overall [Music] different appearance but really I think when you scale it you have somewhat of a similar size of mesh and as to be expected their different engines they'll measure differently so it looks like we're going to be ready to actually run the study and we've run this study so as you can see we have a plot of the von mises stress and let's compare this to what we have in freecad now the color scales are very different and freecad this seizes green resist seems to use blue green and red so it makes the scaling a lot more apparent right it's easy for me to see numerous regions so free cab doesn't quite give us the same visual representation but if you look we're going to slide them on a stretch right here this SolidWorks has the same right on the front of this face there's a modern unstressed assault Works has the same I have a lighter color right here this all it works has the same so if I move over here got stress in the same areas down here I have a maximum stress right on the inside that leg but SolidWorks has it I have to move my screen differently between Salt Works and freecad it's a little bit of a mind bender so let's move on to this leg again stress in the same areas here here and then I've got my maximum stress in there and in here in SolidWorks so these plots that tell us where the stress is going to be is identical now if I run this placement in SolidWorks and over here in freecad I'll just over in this if I switch that to displacement you can see and this is a lot easier they displace identically we're a free cat I can sort this place that using my slider bar and SolidWorks I can actually animate the displacement and of course it gives me this animation where I can we're going to slow or ungodly fast we're done you know what's going on so they again seem exactly the same even have the legs bending similarly when you look at how it's all done so again very impressive if I look at the actual quantitive data especially with von Mises stress when I look at my maximum stress I have 70 1.6 kiloPascals again let's look at this indulging Lee as I said from the beginning of the video the chart options and annotate that stress there we go our max is going to be six nine to six so that would be 69 kilpatt scales so I've got six nine kilo pascals versus seventy-one kiloPascals so there's a minor difference in stress but they're both really close that's probably a few percent so there's a three percent difference in maximum stress between these two and that might be a factor of from the user instead of the software so overall how impressive free CAD is that these stress plots are so extremely similar even have a minor amount of stress right there on that face and free cat is a letter color right in there so I'm very impressed like a little bit more familiar with simulating injection molding and plastics and when you do a plastic software you find that the analysis is very very accurate telling you where you're going to have warp it's not very accurate in telling you the magnitude of org and freecad seems to mirror so it works amazingly well in terms of where the stress is going to be in ostensibly it seems to be quite accurate as far as the actual numbers at least as far as what SolidWorks says being close to it so you saw four seem very similar I think free CAD is incredible for having this little functional in being open source I hope this video is helpful and please subscribe that's going to help me back I'll see you in the next video [Music] [Applause] [Music]

Channel: Joko Engineeringhelp

Views: 37,327

Rating: 4.9830027 out of 5

Keywords: joko, engineering, help, jokoengineering, engineeringhelp, ACADEMY, jokoengineeringhelp, tutorial, how, to, howto, engineer, JMT, EXPLAIN, EXPLAINED, GOENGINEER, KHAN, Modeling, analysis, simulation, vs, versus, comparison, compare, freeCAD, SolidWorks, modeling, fea, fem, finite, element, analize, method, table, dining, step, solid, force, static, mesh, displacement, stress, strain, platform

Id: qWtMJagDoRk

Length: 12min 23sec (743 seconds)

Published: Thu Jul 04 2019