cdana
Civil/Environmental
- Jun 3, 2004
- 4
I would like to know how to model a nonlinear spring with an arbitrar direction. The direction is changing during analysis. A file example would be very appreciated
In ADINA there are the possibilities to assign XYZ....direction only.
I try to model an elastic spring (say 1) which have a changing direction with the load in the plane OYZ by using two identical, independent perpendicular springs (say 2 along Y direction and 3 along Z direction).
In the case of an inelastic spring (say 1) with a changing direction in the plane OYZ, I could use two nonlinear perpendicular springs (say 2 and 3),to model the spring (1), only if I had had the ability to make a dependence between springs 2 and 3 (in other words to check in each step if the resultant of the forces in the springs 2 and 3 versus the resultant displacement of the spring
follow the imposed nonlinear curve of spring 1 wich I want to model).
My other question is: can I do this using any ADINA version or could I make this operation (of checking in each step if the curve is followed) by hand using the results at each time step and to return in the ADINA analysis after in order to do the next step and so on?
Thanks
In ADINA there are the possibilities to assign XYZ....direction only.
I try to model an elastic spring (say 1) which have a changing direction with the load in the plane OYZ by using two identical, independent perpendicular springs (say 2 along Y direction and 3 along Z direction).
In the case of an inelastic spring (say 1) with a changing direction in the plane OYZ, I could use two nonlinear perpendicular springs (say 2 and 3),to model the spring (1), only if I had had the ability to make a dependence between springs 2 and 3 (in other words to check in each step if the resultant of the forces in the springs 2 and 3 versus the resultant displacement of the spring
follow the imposed nonlinear curve of spring 1 wich I want to model).
My other question is: can I do this using any ADINA version or could I make this operation (of checking in each step if the curve is followed) by hand using the results at each time step and to return in the ADINA analysis after in order to do the next step and so on?
Thanks
