Learning Forum

[Jeongwon Kang]

Hello, I'm posting here for the first time.

It's my first time using Ansys Static Structural, and I'm trying to check if the battery container is safe enough through hard condition.

Assumption 1: The boundary condition is x: -40G(-392.4m/s^2), and fixed support for mount holes.
Assumption 2: There is about 2mm margin between surfaces and segments.
Assumption 3: The segment can support stresses or forces through surrounding surfaces.
Assumption 4: The segment is rigid.

I modeled the surfaces of the container as 2D, and the segments and mounts as 3D.

I have to assume the segments to be rigid, so I set the mounts, outer surfaces, and the inner surfaces flexible, and the segments rigid.

And I set the mounts and the outer surfaces "Bonded" each other, and the +x surfaces of segments(contact) and the -x surfaces of inner surfaces(target) "No Separation" each other(by assumption 3).

Finally, I gave fixed support for mounting holes, and acceleration x: -392.4m/s^2.

Then I got the results, and I thought something went wrong.

In total deformation, the left two inner walls seems to have no displacement at all, but only the right wall has 6mm deformation.

I think my settings can't simulate my assumption properly, especially the interaction between segments and inner walls.

I've tried to modify the settings, but I can't get it.

I uploaded the image about my settings, and I would really appreciate if you could help me solve this problem.

Thank you very much.

[Ashish Khemka]

Hi,

Few suggestions - check the contact status before and after the solution. Use MPC contact formulation for bonded contacts with surface bodies. Check if you have large deflection turned on. You can refer to the following link as well:

Verifying and Validating the Model Setup - Lesson 1 - ANSYS Innovation Courses

Regards,

Ashish Khemka