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Remove a point from 2D truss structure
Posted Feb 3, 2010, 4:36 a.m. EST 2 Replies
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Hello everyone,
I've been wondering if anyone knows how can I remove a point from a connection between two trusses.
For example if I have a cross-like structure, could I remove the point in the middle of the cross so that the two members are not connected?
Thank you
Kyriakos
I've been wondering if anyone knows how can I remove a point from a connection between two trusses.
For example if I have a cross-like structure, could I remove the point in the middle of the cross so that the two members are not connected?
Thank you
Kyriakos
2 Replies Last Post Feb 6, 2010, 6:15 a.m. EST
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Posted:
1 decade ago
Hi
If I understand you correct, ou want to "open your structure" or allow a gap.
Well if its a point common to two trusses, it would stay common by "continuity", and a point cannot become "two independent points" without a topology change, and this would imply element reordering and re-indexing whcih is not allowed within the same solving process, as such.
But, you could probably make two points close to each other with a "special" truss element in-between to which you apply some equations to allow for a low stiffnesss in the direction you prefer, or something like that. Then you can control the degrees of freedom between the two truss elements, no ?
By typing in equations for your metrial and laod properties you can make all sorts of "funny" elements, like lumped spring, mass, dampers, or actuators etc
Good luck
Ivar
If I understand you correct, ou want to "open your structure" or allow a gap.
Well if its a point common to two trusses, it would stay common by "continuity", and a point cannot become "two independent points" without a topology change, and this would imply element reordering and re-indexing whcih is not allowed within the same solving process, as such.
But, you could probably make two points close to each other with a "special" truss element in-between to which you apply some equations to allow for a low stiffnesss in the direction you prefer, or something like that. Then you can control the degrees of freedom between the two truss elements, no ?
By typing in equations for your metrial and laod properties you can make all sorts of "funny" elements, like lumped spring, mass, dampers, or actuators etc
Good luck
Ivar
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Posted:
1 decade ago
Thank you very much