Transient Non Linear Analysis (Contact)

FaroukM

Hello everyone ! 

 

I'm working on 2 dofs models (see below, the picture in right) and I need your help to run Non linear Transient Analysis. 

 

The idea is to compare Newmark scheme implemented in Octave with OptiStruct solver. 

I run first Non Linear Transient Simulation in OptiStruct and I found weird results ! For sure I did something wrong in the model. 

 

 

BCsREM refers to the boundary conditions; 

TSetp : TSEP card (DT and N); 

DLOAD : Dirac load to disturb the system in order the find x(t) and y(t) oscillations ; 

 

For the contact discretization, I used N2S (The mass CNOM2 to the rigid plate). And I control the contact stiffness via CONTPRM ... 

 

Do you have an example like this ? 

 

Best regards, 

Rahul Rajan_21763

We don't have any example based on your requirement for 2dof.You could refer to below link for nonlinear transient analysis.

OptiStruct Nonlinear Learning Center