hydraulic pistons in fem analysis

[Swarzy]

Good morning to all,

I would have the need to do a fem analysis on a simple excavator arm, with tetrahedral elements, investigating with particular interest the tensions present on the hydraulic piston, that is:
- cutting effort on grazing pins;
- elestic stability of the stem (point load);

At this point I ask you:
- is it the case of representing it as one-dimensional elements?
- represent it as a simplified 3d model (body + stem) by viculating the extremes with "spin" connections and then calculate the elestic stability (also with paper and pen) of the piston separately applying the cutting forces detected on the thorns in axial direction to the piston?
- or... tell me!

the software used is "solidworks simulation 2010".



Thank you very much for your cooperation.

Have a good day.

swarzy.

 

[Matteo]

As a first approach, I would try to calculate separately (paper and pen, swx cinematic module, simplified fem calculation) the force exerted on the piston, and then I would do a detailed analysis of this detail.

 

[Vash]

Hi.

for the tip load, you can also do it manually without fem; you still need to know some specific data of the hydraulic cylinder.


If necessary, ask.


I'm going to punto my own... oops, ah already you can not do personal advertising :biggrin:

 

[Matteo]

I'm going to punto my own... oops, ah already you can not do personal advertising :biggrin:

depends: if you help enrich the forum with material produced by your study/business no problem for logos or links. the important thing is that the contribution is relevant to the application and publication of the functional link to the answer.