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May 22, 2017
05:07 AM

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May 22, 2017
05:07 AM

Shear and moment diagram in Mathcad

Hi

I have this beam that i have i shared in two sections. I have determined the equations for normal, shear and moment. Now I want to draw them in Mathcad but I don't understand how to do it. I have watched some videos in youtube but it didn't help so much.

I use Mathcad 15.

I really hope you can help me!

Thanks in advance!

10 REPLIES 10

May 22, 2017
06:50 AM

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May 22, 2017
06:50 AM

I can see I have calculated some thing wrongs.. the update is coming

May 22, 2017
07:11 AM

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May 22, 2017
07:11 AM

Your beam does not appear to be in static equilibrium; where are your constraints?

A simple example:

May 22, 2017
07:47 AM

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May 22, 2017
07:47 AM

Hi Fred,

Thanks for your answer!

There is only one support on my beam and that is placed at left side, Cx, Cy. From point C to FAB there is 600 mm, and the totale length of the beam is 1634,3 mm. At the end of hte right side there is a force F=1502,46 N

Was it what you mean with constraints or?

Thanks i advance!

May 22, 2017
08:35 AM

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May 22, 2017
08:35 AM

This is how I would approach it, assuming a cantilever beam at the left end:

May 23, 2017
04:25 AM

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May 23, 2017
04:25 AM

so-3 schrieb:

Was it what you mean with constraints or?

Fred thought the bearer was not in a static balance.

Your problem seems to be the plotting of the moments and the transverse forces, which has nothing to do with static equilibrium.

Of course, a carrier should be in static equilibrium.

Your carrier is not statically determined according to the sketch. There are missing bearings.

Volker

May 22, 2017
07:15 AM

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May 22, 2017
07:15 AM

Her is the edited version:

May 22, 2017
09:54 AM

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May 22, 2017
09:54 AM

There are countless worksheets on the topic you are asking for. Try doing a search by writing in the box shown here, what you are looking for:

May 22, 2017
11:39 AM

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May 22, 2017
11:39 AM

The most of the Work sheets/files are created with other programs, I only use Mathcad 15.. so can't open them.

May 23, 2017
12:46 AM

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May 23, 2017
12:46 AM

Do research only in the mathcad worksheets:

May 23, 2017
04:13 AM

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May 23, 2017
04:13 AM

Hi so-3,

This is the short way to demonstrate plots in MC15.

Hope the attached File will help you for the first steps with plotting M(x) and FQ(X).

It's really easy to do for you.

Best regards, Volker

Volker