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you have not removed the temp node, as i've suggested before.

So this node is flying in space, and you have constrained this node only.

So as the rest of your model is not properly constrained, your NL analysis does not converge.

 

clear the temp nodes, redo your boundary condition and then re-run the analysis.

selman djeffal likes this

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39 minutes ago, Adriano A. Koga said:

you have not removed the temp node, as i've suggested before.

So this node is flying in space, and you have constrained this node only.

So as the rest of your model is not properly constrained, your NL analysis does not converge.

 

clear the temp nodes, redo your boundary condition and then re-run the analysis.

Great , no error but the animation of beam seems like it changes its shape when bending!!!
 

beamani.png

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52 minutes ago, Adriano A. Koga said:

you have not removed the temp node, as i've suggested before.

So this node is flying in space, and you have constrained this node only.

So as the rest of your model is not properly constrained, your NL analysis does not converge.

 

clear the temp nodes, redo your boundary condition and then re-run the analysis.

Great , it is done , for a week force , the beam behaves as it is supposed . thank you so much adriano.you made my day . 

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1 hour ago, Adriano A. Koga said:

you have not removed the temp node, as i've suggested before.

So this node is flying in space, and you have constrained this node only.

So as the rest of your model is not properly constrained, your NL analysis does not converge.

 

clear the temp nodes, redo your boundary condition and then re-run the analysis.

for a force ( 2N) , it is peroperly done. 

beambenidn.png

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On 6/17/2020 at 4:58 PM, Adriano A. Koga said:

you have not removed the temp node, as i've suggested before.

So this node is flying in space, and you have constrained this node only.

So as the rest of your model is not properly constrained, your NL analysis does not converge.

 

clear the temp nodes, redo your boundary condition and then re-run the analysis.

Dear , Mr adriano , you really walked me through a great method to simulate a follower force , and it will be the fifth chapter in my thesis ( you will be mentioned there)  , So , is there a way in hypermesh to calculate the ( x1 x2 x3 ...xn) when applying the force , see the picture bellow

beam_dis.png

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2 hours ago, Adriano A. Koga said:

assuming that you have your model running and you got the result, this would be just the global 'y' displacement component of your model, that you can easily contour in HyperView and then query.

Yep the model is properly working , How to query  !!! 

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56 minutes ago, Adriano A. Koga said:

in HyperView, plot the displacement in the desired direction, and then use 'Query', and click the desired nodes.

 

image.thumb.png.c8e1d0efc6c086d2b5b1cd4c45503661.png

 

or you can use the 'measure' function, use 'node path' and pick your nodes of interest, and 'Create Curves' to plot them. (value x distance)

image.thumb.png.00e65642211ddef40fee637b4e1e537e.png

 

where can I find 'plot ' !!

de.png

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On 6/10/2020 at 6:49 PM, Adriano A. Koga said:

the same video i've shared before for rigids shows how to create beam elements.

you should find something in Altair University or their youtube channel.

 

for your model, having only the disks geometry modelled into the CAD is enough, including the points for attaching the beams.

In HM you will create first the 2D mesh, using the fixed points as reference.

 

I'm attaching a very basic video as well, but again, go after some training material in Altair University.

 

 

Hello Mr adriano , How did you create the four nodes on each circle  !!!

robot.png

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On 6/10/2020 at 6:49 PM, Adriano A. Koga said:

the same video i've shared before for rigids shows how to create beam elements.

you should find something in Altair University or their youtube channel.

 

for your model, having only the disks geometry modelled into the CAD is enough, including the points for attaching the beams.

In HM you will create first the 2D mesh, using the fixed points as reference.

 

I'm attaching a very basic video as well, but again, go after some training material in Altair University.

 

 

Hello Mr adriano , How did you create the four nodes on each circle  !!!

robot.png

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6 hours ago, Adriano A. Koga said:

these are originally 4 geometry points in each circle, so HM forcelly creates nodes on them.

 

I've created them as fixed points in the 'quick edit' panel.

selecting one line and adding a N points. Usually circles have only 1 point. You can add 3 more.

image.thumb.png.53f4b056e776300bfc619c34dc8300e4.png

My  co-supervisor told me that , as long as you came across this software where you can model a follower force on our robot , then stick to it but the problem is in my univ no one has used hypermesh and none of the teachers heard about it , thus it is of a great interest . I will mention you in one of my chapters Mr adriano . thank you so much for your valuable help  

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On 7/4/2020 at 12:59 AM, Adriano A. Koga said:

these are originally 4 geometry points in each circle, so HM forcelly creates nodes on them.

 

I've created them as fixed points in the 'quick edit' panel.

selecting one line and adding a N points. Usually circles have only 1 point. You can add 3 more.

image.thumb.png.53f4b056e776300bfc619c34dc8300e4.png

Hello Mr adriano , when I emported this design from solidworks to hypermesh , it does not allow me to create RBE2 and SPC ..etc , is there ny solution! , or can we create that in hypermsh and aplply that follower force .
the mechanism conssists of a flexible beam with a number of disks attached to it , I just want to analyse how it bends  !! 

robot hybermesh.png

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1 minute ago, selman djeffal said:

Hello Mr adriano , when I emported this design from solidworks to hypermesh , it does not allow me to create RBE2 and SPC ..etc , is there ny solution! , or can we create that in hypermsh and aplply that follower force .
the mechanism conssists of a flexible beam with a number of disks attached to it , I just want to analyse how it bends  !! 

robot hybermesh.png

 

Assemblage2.STEP

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3 hours ago, Adriano A. Koga said:

what do you mean by " it does not allow me to create RBE2 and SPC"??

What have you tried? What steps did you try?

 

AS long as I was not able to draw this robot on hypermesh , I tried it on solidworks then emported it on hypermesh, but when I wanted  to fix the robot from the bottom and apply the follower force on the top  I was not able to do that  !!! 

robot hybermesh2.png

Assemblage2.STEP

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After applying the force and the constraints , I would like to have something like  that(see the picture), knowing that the bending in this picture was not done using follower force , in my case I would like to be the first one who does it !! 

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Just now, selman djeffal said:

After applying the force and the constraints , I would like to have something like  that(see the picture), knowing that the bending in this picture was not done using follower force , in my case I would like to be the first one who does it !! 

 

opr.png

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Hi @selman djeffal

 

I'm trying to understand what exactly have you accomplish so far?

 

Do you have a valid mesh already? Do you have your material data inside HM?

Do you have your properties created?

 

I've not seen any of this yet in your pictures. So I can't help at all, unfortunately.

I already understood what you're trying to build. But I don't understand what you got done so far in FE model.

 

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11 hours ago, Adriano A. Koga said:

Hi @selman djeffal

 

I'm trying to understand what exactly have you accomplish so far?

 

Do you have a valid mesh already? Do you have your material data inside HM?

Do you have your properties created?

 

I've not seen any of this yet in your pictures. So I can't help at all, unfortunately.

I already understood what you're trying to build. But I don't understand what you got done so far in FE model.

 

I h

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11 hours ago, Adriano A. Koga said:

Hi @selman djeffal

 

I'm trying to understand what exactly have you accomplish so far?

 

Do you have a valid mesh already? Do you have your material data inside HM?

Do you have your properties created?

 

I've not seen any of this yet in your pictures. So I can't help at all, unfortunately.

I already understood what you're trying to build. But I don't understand what you got done so far in FE model.

 

I have not done anything due to the software hypermesh itsef , the design I showed you was made on soldiworks , then I emported it in hypermesh. please find the attached file of the design in solidworks . 
the material is already defined in solidworks , ( flexible beam from any flexible material )  ( disks  made from carbon fiber ) thats all  

Assemblage2.STEP

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You didn't understand what HM is. I'm sorry.

 

You will import yoir geometry and build your model insode HM from scratch, creating your mesh, adding materials, bcs, etc.

 

Unless in SolidWorks you can export your mesh in Mastran format, so that it could be used, saving some work. Orherwise you will need to build your FE model from the beginning.

 

I recokmend you to start from Inspire as it creates a very moce initial model for you amd it is easy to use. Then export the model to HM.

 

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