Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Remove a point from 2D truss structure
Posted 3 feb 2010, 04:36 GMT-5 2 Replies
Please login with a confirmed email address before reporting spam
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 6 feb 2010, 06:15 GMT-5
Please login with a confirmed email address before reporting spam
Posted:
2 decades 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
Please login with a confirmed email address before reporting spam
Posted:
2 decades ago
Thank you very much