3D Spline to simulate a nonlinear damper. How to change z values ? HELP
3D Spline to simulate a nonlinear damper. How to change z values ? HELP
(OP)
Hi everyone,
I’m developing a 7DoF full car model on ADAMS view. I know about ADAMS car but doing this on view was an option made early for my dissertation.
Everything so far is parameterized in order to be able to run a DoE to do a dynamic optimization.
I’m using a 2D spline to define the damper curve data. To be able to optimize the suspension I defined a 3D spline with the different damper curves (force vs speed) where the first column (x column) is velocity and the others (y columns) are force and the z column correlates to the y column number. The idea is to create a Design Variable to change the y column that is being used. That spline is on the option ‘Spline: F=f(velo)’ in the spring properties.
QUESTION: What I can’t understand is how and where to change the z column (value of the design variable) that defines the force (y data) on the damper.
QUESTION: Does anyone know what I am missing?
Thank you for your help in advance!
Sérgio
I’m developing a 7DoF full car model on ADAMS view. I know about ADAMS car but doing this on view was an option made early for my dissertation.
Everything so far is parameterized in order to be able to run a DoE to do a dynamic optimization.
I’m using a 2D spline to define the damper curve data. To be able to optimize the suspension I defined a 3D spline with the different damper curves (force vs speed) where the first column (x column) is velocity and the others (y columns) are force and the z column correlates to the y column number. The idea is to create a Design Variable to change the y column that is being used. That spline is on the option ‘Spline: F=f(velo)’ in the spring properties.
QUESTION: What I can’t understand is how and where to change the z column (value of the design variable) that defines the force (y data) on the damper.

QUESTION: Does anyone know what I am missing?

Thank you for your help in advance!

Sérgio





RE: 3D Spline to simulate a nonlinear damper. How to change z values ? HELP
! Open loop variable ids
!
VARIABLE/9799
, FUNCTION = 1 ! Smart Driver Input Signal
Which sets variable 9799 to a value of 1
Whether you can construct a DOE that alters variables I do not know.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: 3D Spline to simulate a nonlinear damper. How to change z values ? HELP
I thought that it was possible to do it with Design Variable and 3D spline without anything like that. following the same idea when you define a DV with the spring stiffness values... Isn't that possible?
The thing is that I never wrote any code for the solver...
Thank you for your reply ;)
RE: 3D Spline to simulate a nonlinear damper. How to change z values ? HELP
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: 3D Spline to simulate a nonlinear damper. How to change z values ? HELP