1D bar orientarion
Hi there,
I'm not sure that I am fully understanding the way bars orientation work. To be honest, I don't understand it at all...
I attach the model I am currently working on. I would really appreciate it if anyone could explain me the way orientation works and how I should define the four CBEAM's orientation.
To put it in context, the CBEAMs represent steel cables that prevents the undertray to displace more than it should when a distributed load is applied on it.
*Note that the model attached is a non complete version, because the complete one weighs more than 5MB.
Best Answer
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Thank you so much!
So applying your information to my model... I still don't get how I should define orientation. If x axis is automatically defined from A to B and my cross section is a solid circle defined in Hyperbeam, is it okay if I introduce ycomp=1?
Fernando,
Y vector should be perpendicular to your x-axis.
In case of a circle section, the only thing you need to avoid is to have a orientation vector parallel to x-axis (a to b). Defining anything different than that, it should be fine.
1
Answers
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Beam and Bar elements depend on their orientation to correctly define them.
The V vector is the orientation vector, and combined with your X axis (always from a to b), you will have your XYZ element system.
The Y vector of your beam is the one that relates to your beamsection, in case you are defining it in HyperBeam tool.
Your Y vector points to the direction showed by the 'Y' vector here inside the beamsection:
Now when it comes to a Beam, you also can define the stress recovery points in the PBEAM/PBAR. These are the points in the cross-section where you want to have your stresses computed. So you will define points C, D, E and F, with respect to your section local system.
Using a PBEAML makes it easier because it already defines them for you. (look at PBEAML documentation).
take a look at Altair Students ebook as it gives you some more infos about modelling.
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Adriano Koga_20259 said:
Beam and Bar elements depend on their orientation to correctly define them.
The V vector is the orientation vector, and combined with your X axis (always from a to b), you will have your XYZ element system.
The Y vector of your beam is the one that relates to your beamsection, in case you are defining it in HyperBeam tool.
Your Y vector points to the direction showed by the 'Y' vector here inside the beamsection:
Now when it comes to a Beam, you also can define the stress recovery points in the PBEAM/PBAR. These are the points in the cross-section where you want to have your stresses computed. So you will define points C, D, E and F, with respect to your section local system.
Using a PBEAML makes it easier because it already defines them for you. (look at PBEAML documentation).
take a look at Altair Students ebook as it gives you some more infos about modelling.
Thank you so much!
So applying your information to my model... I still don't get how I should define orientation. If x axis is automatically defined from A to B and my cross section is a solid circle defined in Hyperbeam, is it okay if I introduce ycomp=1?
0 -
Thank you so much!
So applying your information to my model... I still don't get how I should define orientation. If x axis is automatically defined from A to B and my cross section is a solid circle defined in Hyperbeam, is it okay if I introduce ycomp=1?
Fernando,
Y vector should be perpendicular to your x-axis.
In case of a circle section, the only thing you need to avoid is to have a orientation vector parallel to x-axis (a to b). Defining anything different than that, it should be fine.
1 -
Adriano Koga_20259 said:
Fernando,
Y vector should be perpendicular to your x-axis.
In case of a circle section, the only thing you need to avoid is to have a orientation vector parallel to x-axis (a to b). Defining anything different than that, it should be fine.
Thank you so much, Adriano
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