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Robot Structural Analysis

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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-17-2014 05:01 AM in reply to: Artur.Kosakowski

thank u this is very helpfull! howvere i keep getting instability at node 2 ( between the contiousous beam ) ! do i have to model the releases or is it just on the supports! or do i have to change flanges ? im usure ! appoligies i am new to robot and taking a while to get the hang of things.

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Artur.Kosakowski
Posts: 4,596
Registered: ‎12-17-2010

Re: Continuous Beam design

02-17-2014 05:19 AM in reply to: GordonSharp1992

In the model you attached you defined the compatible nodes in such a way that node 2 is not connected with any element of the model so you may delete this definition to get rid of the instability error.

 

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Artur Kosakowski
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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-17-2014 05:41 AM in reply to: Artur.Kosakowski

i have tried this everal times it keeps coming up with instability i have joined the two beams with the -fxf and kept the roller support unjoined i dont know what to do !?

 

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Artur.Kosakowski
Posts: 4,596
Registered: ‎12-17-2010

Re: Continuous Beam design

02-17-2014 05:44 AM in reply to: GordonSharp1992

delete compatible nodes.PNG

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-20-2014 05:10 AM in reply to: Artur.Kosakowski

took me a while ! but i got there thank u for the great help ! structure seems to be working all well thank you

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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-20-2014 05:16 AM in reply to: Artur.Kosakowski

if i now wanted to model a fixed  spring at the top left hand node ! how would i do so ! i have a picture attrached of what i think it would look like !? wetrher it is a roller or pinned or fixed im not sure !

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Artur.Kosakowski
Posts: 4,596
Registered: ‎12-17-2010

Re: Continuous Beam design

02-20-2014 05:22 AM in reply to: GordonSharp1992

elastic support ux.PNG

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-20-2014 05:36 AM in reply to: Artur.Kosakowski

perfect thanks i take it there is more opptions in urs as its 3D ?! and what sort of value could i give for this ? is 12345 okay im not sure what to use ?

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Artur.Kosakowski
Posts: 4,596
Registered: ‎12-17-2010

Re: Continuous Beam design

02-20-2014 05:56 AM in reply to: GordonSharp1992

12345 stands for the stiffness of the spring and this is the value you should know. I'm sorry but I don't understand the other part of your question.



Artur Kosakowski
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GordonSharp1992
Posts: 36
Registered: ‎02-10-2014

Re: Continuous Beam design

02-20-2014 07:45 AM in reply to: Artur.Kosakowski

thanks i understand now !

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