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access a result value within the model to generate force
Posted 15 avr. 2016, 14:22 UTC−4 Parameters, Variables, & Functions Version 5.2 4 Replies
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Hi all,
I need to find the pressure difference above and below a shell, along one of its edges, then use it to generate point load on another part of my model.
1. I define a variable of dp_shell with up(p)-down(p) on that boundary
2. I define another variable of dp_edge, using dp_shell on its edge
Now when I define point load of a*dp_edge, I receive an error of undefined variable.
Is it because the variable is not defined before solution?
Do you have an alternative suggestion to apply the load, based on the pressure difference on sides of the boundary, along one of its edges?
Thanks
I need to find the pressure difference above and below a shell, along one of its edges, then use it to generate point load on another part of my model.
1. I define a variable of dp_shell with up(p)-down(p) on that boundary
2. I define another variable of dp_edge, using dp_shell on its edge
Now when I define point load of a*dp_edge, I receive an error of undefined variable.
Is it because the variable is not defined before solution?
Do you have an alternative suggestion to apply the load, based on the pressure difference on sides of the boundary, along one of its edges?
Thanks
4 Replies Last Post 15 avr. 2016, 16:41 UTC−4
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Posted:
9 years ago
The issue may be that your variable is defined in one location and you're trying to call it in another location, where it is therefore not defined, hence the error message. If that's the problem, look into component couplings (Reference Manual, version 5.2, page 281 and following) to pass the information around your model.
Best,
Jeff
Best,
Jeff
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Posted:
9 years ago
Hi Jeff,
Thanks for the reply. So I defined a variable that calculates the pressure difference along an edge1 (dp_edge). Then I defined a linear extrusion that maps this edge1 to the edge2 that I want to apply point load along it at vertices (linext1) and I apply point nodes by a*linext1(dp_edge).
Now my concern about the linear extrusion coupling:
edge2 has its own pressure2 and displacement2 etc. Does the linext1 override those values by pressure1 and displacement1 etc from edge1? or it does not changes anything, only makes pressure1 and displacement1 etc available along edge2?
Thanks
Thanks for the reply. So I defined a variable that calculates the pressure difference along an edge1 (dp_edge). Then I defined a linear extrusion that maps this edge1 to the edge2 that I want to apply point load along it at vertices (linext1) and I apply point nodes by a*linext1(dp_edge).
Now my concern about the linear extrusion coupling:
edge2 has its own pressure2 and displacement2 etc. Does the linext1 override those values by pressure1 and displacement1 etc from edge1? or it does not changes anything, only makes pressure1 and displacement1 etc available along edge2?
Thanks
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Posted:
9 years ago
All it does is pass the information around, correct.
Jeff
Jeff
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Posted:
9 years ago
Thanks a lot for the clarification!