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Simplified Mechanic Model of a Stacker

08/28/2017 10:58 AM

Hi there,
I am working on my master work about counterweight boom analysis on a stacker ARs2000, and i wonder if someone from here could help me. Can someone suggest me, how to make simplified mechanic (analitic) model of a model in a attachemnt picture. So i have a console at the botom of platform, and some forces and small moments from main boom on the platform. Also at the and of counterweight boom i have counterweight force, and a force of hidrocylinder at the top. I have joint connection at the middle part which is connecting central tower and counterweight boom, also at the guying stay. I want to check if reaction sensor Catia results are near to analitic model which i haven`t done yet?
Thank you very much,
Best regards.
Stefan

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#1

Re: Simplified mechanic model of a stacker

08/28/2017 11:02 AM

how to make simplified mechanic (analitic) model of a model in a attachemnt picture

When you say analitic do you mean analytic or animation?

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#2

Re: Simplified mechanic model of a stacker

08/28/2017 11:05 AM

Analytic. Sorry for my not so good english. It`s like a free body diagram.

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#3
In reply to #2

Re: Simplified mechanic model of a stacker

08/28/2017 11:16 AM

No need to apologize just had to confirm...

If I understand it correctly, I take it you want to analyze the cost effectiveness of this model.

There are a number of points that you would need to cover....

I reread your post, and it sounds like you would like to do a FEA Finite Element Analysis (FEA) on the stresses. Is that correct?

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#5
In reply to #3

Re: Simplified mechanic model of a stacker

08/28/2017 11:32 AM

I already did that. I just want to make free body diagram of it, and calculate restraints on my own, to see if they match. This is an example, but not right example

beacose i assume the way i am doing it, it doesn`t make sense... :)

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#8
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Re: Simplified mechanic model of a stacker

08/28/2017 1:52 PM

I think you mean a technical drawing...?

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#9
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Re: Simplified mechanic model of a stacker

08/29/2017 5:07 AM

No, i think on simple physics analysis model.

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#10
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Re: Simplified mechanic model of a stacker

08/29/2017 10:59 AM
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#4

Re: Simplified Mechanic Model of a Stacker

08/28/2017 11:23 AM
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#6

Re: Simplified Mechanic Model of a Stacker

08/28/2017 12:28 PM

I would suspect that simple physics analysis of this structure is not sufficient, and therefore I decline to offer anything further on this.

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#7
In reply to #6

Re: Simplified Mechanic Model of a Stacker

08/28/2017 12:43 PM

It isn`t sufficient, i only need it as a small part of whole work.

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#11

Re: Simplified Mechanic Model of a Stacker

08/29/2017 11:04 AM

There is a site that has some very useful programs, I have used it in the past. This one should meet your needs. but search around it, there could be others.

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#12
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Re: Simplified Mechanic Model of a Stacker

08/30/2017 2:21 PM

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#13
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Re: Simplified Mechanic Model of a Stacker

08/30/2017 3:19 PM

The title of this thread is not: "Simple Minded Mechanic Model of a Stacker."

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#14

Re: Simplified Mechanic Model of a Stacker

08/31/2017 10:38 AM

Stefan is doing what many posters fail to do; i.e., he is hand-checking his work to see if the computer generated analysis, or one done by another source, is consistent with reality. He is looking for a "gut-check" method, not something accurate to 10 decimal places. Others would do well to follow his lead, maybe there is still some hope for the future of the engineering profession.

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#15
In reply to #14

Re: Simplified Mechanic Model of a Stacker

08/31/2017 10:51 AM

there was a saying of an old school engineer uses his calculator to solve a problem and 2nd checks the answer by hand written checks, a green engineer uses hand written calc's and checks his answer by using his calculator...

Now-a-days, I think the green engineers passes both ways up and just visits CR4 for the answer...

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