Static Analysis in FreeCAD with FEM Workbench _ FreeCAD Tutorial _ FreeCAD FEM _ Mechnexus _

Hello friends welcome to freeCAD tutorial and in this tutorial we are going

to do FE ysis in freeCAD with the help of a FEM workbench in freeCAD and

we will do the ysis of this L-shaped joint and we will study is deformation

and stresses in freeCAD you can also visit my website macnexus.com where I

I write articles and tutorials on free CAD you can also download my tutorial

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and my Ko-Fi donation page link in a video description I will close this file

and I will show you from the scratch how you can do the same FEA ysis which I

have a did in free CAD now I will create a new file and I have activated part

design workbench I will create my body on my origin plane and on this plane XY

I will create my part I will of the origin plane I will select the polyline

tool and create my L shaped part now I will make this vertical

this and this horizontal and this will be the vertical now I will give my dimensions

hundred this one will be the hundred and this one will be the thirty

thirty and now here I apply the fillet

and I will give it 5 mm now I will close my sketch

and I will click on the path tool and I will give it a thickness 5 mm

now on this face I will create two holes I will project the edges

now I will give the dimension 30

this 115 I will give this and this 15 and this and this 30 now I will give this diameter 15 mm and I will make this and this equal Now I will click on the pocket tool and remove the material

now our part is ready for the FE ysis so we will switch to the FEM workbench

now here on the FEM workbench first we will create a container for our ysis

where we apply the material create the meshes and run the results

so on here you will get an icon known as ysis container and our next step is

to apply the material to our body so I will select my body and click on material

for solid so here I will select my material so in my case I am going to

select the steel IC 45 so once you select the material you will get its

properties so density is a 7800 which means that the steel IC 45 is a

carbon steel or I can select some density up to the 7850 let's see

steel okay this is the better material of density 7900 now I will click OK now we have applied the

material now we will apply the forces and we will fix our part at one end so this hole will be the

fix so here you will get the icon constraint fix click on add select the

face so you can see that fix symbol has been inserted say ok now we will apply

the forces fix means that this hole is fixed either with us bolt or any other

method either maybe it will be welded so this is the fix and we will apply the

forces to apply the forces you will see one icon here constraint forces click on

it click on add select the surface so now you are seeing the force direction on

the right hand side if you want to your reverse your direction just click on

reverse direction so you can see that arrow has been reversed but I wanted to

apply the forces on this direction so click on OK now next step is to apply

the mesh so in freeCAD FEM workbench we have two types of the mesh if we select

our body we can see here two mesh first one is a fem mesh from netgen and

second one is a gmesh so we will go with a netgen so we will click on it and here

max size and second order we will tick mark it so on max size we will give the

five and the second order second order is the more precise let me explain with

the images so this first one is a first order and we see only four nodes but on the second order is a tetrahedron elements and we see number of nodes are more as compared to first order so in a fe ysis more finer your mesh more precise results you

will get so we will go with a second order and click on the apply so you can see that

mesh has been created triangular count is a 1230 notes and other value is given here

so tetrahedron count is a 1535 which i have shown this one so we will click on OK and

here we are seeing the blue tick mark so we will click on refresh now we have

model our body we have apply the material we have apply the forces so in

forces here I forgot to apply the load so load I will apply 500 Newton click on

okay now we will move to the next step and next step is our solving stage so

here on a few workbench you will get an icon of solver click on it and now you

can see that solver has been added double click on it so our ysis is a

statics so we have selected statics here and click on write INP file and write is

completed and then run on calculus so our calculation is running so once you

get this message calculus done without an error which means that our result is

ready close it now to see the result double clean on the calculus results so

here is our results now we will read the results and what are the results are

showing here first one is a displacement so we can see that max displacement is a

75.75 micron and here is a displacement factor so displacement factor we will keep 5 so 5

means that it is a 5 times more displacement than its actual size so if we increase our

displacement so that you can see that how part is deforming so we will keep it up to

the five times so this is the displacement and you can also get here

one misses stress if you click on it so you can see that stress is acting you

You can get other factor as well like displacement in x,y and z directions, maximum principal

stresses, minimum principal stresses, where it is acting, maximum shear stresses like this

Now we will on our body. Now click on the calculus results and click here post pipeline from results

So you can see that a graph has been inserted here. Now click on result pipeline and click on here wrap filter

On here wrap filter mode is a surface field is a displacement

We are more interested in a displacement on apply and ok and hide this CCX results sorry hide this result pipeline

so now you will have the clear idea how much stresses is acting and how much

displacement you are getting with respect to the graph now let's see what if we make

the changes to our model so here we have applied the radius of 5 mm now we will change the

radius to the 5 to 30 mm and we will see the results again so for this I will activate

my body go to the pad sketch and here I will make it 30

before that I will delete these results

So you can see that radius has been updated here. Now activate our ysis and again activate this solver and write INP file and then run calculus

Calculus done without error. Now we will click on the results

So some graphical issue on if you see perpendicular. Now here we can see the displacement with our actual body

it is deforming so we will keep our factor 5 say ok now click on the calculus results

on post pipeline results then click on post pipeline result and click on the wrap factor

and again in field section select the displacement and say ok and hide this result pipeline so

you can see that our new result with a modified radius has been updated and this FEM workbench

is very pretty handy and you can change the shape you can change the material and you

can do multiple calculations based on the shapes and material in free CAD FEM workbench

so this is a very simple tutorial on FEM workbench of L-shaped joint

in future I will take some more complex FEM ysis till now you can practice this with the help of FEM workbench

and I will provide this source file in a video description so that you can

practice it and also visit my website macnexus.com for articles and tutorials on a free cad

I will come with more useful tutorial like this. Thank you for watching and thank you for your valuable time