🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.
Join and Win

Transient Non Linear Analysis (Contact)

User: "FaroukM"
Altair Community Member
Updated by 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. 

image.png.cb8613c5d6a4c4f28840c9341a16f73e.png

 

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. 

 

image.png.70a3cae8c210c0dd74c9e0a761d171d9.png

 

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, 

Find more posts tagged with

Sort by:
1 - 6 of 61