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Farouk Maaboudallah

Transient Non Linear Analysis (Contact)

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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, 

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15 hours ago, saiful85 said:


Hi Rahul,

Where i can find the model file for this? i want to try this.





There a good book provided by Altair. Inc. You can find the basic of what you're doing. You can find as well the model described in details ... 




saiful85 likes this

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