frame analysis fem

[themole]

good morning, I need to know if by sharing a weight (machine body) of 3000 kg on the attached frame the materials used (heb 100 + plates in 12 mm) hold.
If possible, can you check this in inventor??

Thank you.

 

[biz]

It is usually common use to presize, for example,in the specific case, a frame,maybe with the help of a spreadsheet (excel or similar).personally work like this:
_imposed static scheme(isstatic or hyperstatic,which is)
_binding reactions
_diagrams internal stresses
_dimension according to the most stressed section
_fine design,indi design
_ possible fem verification, if complex geometry, not comparable to solid de saint venant
or, possibly, proceed by analytical way, parameterizing everything, without having to make more drawings and more fem.
I personally prefer the analytical path, if I work in the linear field without complex geometries.
As soon as I try to do an analysis anyway.
I use ptc direct modeling and solid edge,both have the fem module but are only available through a special license,Immagino is worth the same thing for inventor.
for simulations I take advantage of myself and freecad.
I recommend you freecad,it is open source and a valid tool for analysis.

 

[biz]

how is the frame bound?

 

[PIETRO2002]

good morning, I need to know if by sharing a weight (machine body) of 3000 kg on the attached frame the materials used (heb 100 + plates in 12 mm) hold.
If possible, can you check this in inventor??

Thank you.

I tried to make a verification:
I used a steel with yielding 207 mpa.
frame weight 596 kg.
I simulated how the frame leaned on the whole contour and applied 30000 n concentrated in the middle of the central beam (for safety )!
in these conditions gave me a safety coefficient of 3.7 and a maximum arrow of 0.4 mm.
logically if I had distributed the 30000 n on all perimeter of the frame I would have had results clearly more favorable.
I'd say he's well sized.
I'd like someone else to verify it! :

 

[PIETRO2002]

good morning, I need to know if by sharing a weight (machine body) of 3000 kg on the attached frame the materials used (heb 100 + plates in 12 mm) hold.
If possible, can you check this in inventor??

Thank you.

I did the verification using ante-war inventor! :

 

[biz]

Unfortunately, I am mistaken, there is some import problem, if I could do a boolean union operation so much better.

 

[biz]

even spacers imported them as compounds in freecad

 

[themole]

I did the verification using ante-war inventor! :

I tried to make a verification:
I used a steel with yielding 207 mpa.
frame weight 596 kg.
I simulated how the frame leaned on the whole contour and applied 30000 n concentrated in the middle of the central beam (for safety )!
in these conditions gave me a safety coefficient of 3.7 and a maximum arrow of 0.4 mm.
logically if I had distributed the 30000 n on all perimeter of the frame I would have had results clearly more favorable.
I'd say he's well sized.
I'd like someone else to verify it! :

Thank you very much

 

[themole]

how is the frame bound?

simply leaning on the ground

 

[biz]

by making an analytical calculation,considering a uniformly distributed load,there follows an arrow that oscillates between 0.13 and 0.2 mm. @ pietro2002 the condition he set is far worsening than the calculation I made.

 

[meccanicamg]

good morning, I need to know if by sharing a weight (machine body) of 3000 kg on the attached frame the materials used (heb 100 + plates in 12 mm) hold.
If possible, can you check this in inventor??

Thank you.

If the frame is rested on the ground and the load is uniform I would say that you can also make the hand calculation of the beams that are sufficiently long compared to the section size.
Moreover with any fem it is possible to simulate constraints and load. Keep in mind that the fundamental thing will be the type of bond you will give between the profiles and the ground. If you incastrious everything you will get results that are either as tight or as little as the load will be symmetrical/asymmetric.
This is the core of simulation: constraints.

 

[biz]

I have tried in different configurations by analytical way,the maximum arrow is around the value 0.6mm.However this is the worst configuration,when we find ourselves in the condition in which the auction of 2062mm is free to discharge to the ends.in other eventualities,the maximum arrow,for example considering the travail fixed to one end and instead leaned to the other,the same is worth around the value 0.3mm.