Learning Forum

[b.claudet]

Hello everyone,

I am currently working on a modal analysis for a battery pack. It is essentially composed of an upper flat flask, in the middle i have the container where i store my batteries, and at the bottom i have another flask. These 3 pieces are basically connected with multiple spacers and the bottom flask is screwed at the right with 6 screws to a metal sheet that represents the right side of the box, and at the right to a metal rod that is fixed to the 2 sides of the box at the left. This assembly is stored inside a metallic box that is screwed at the top with the box cover. In order to simplify my meshing, i want to eliminate the screws and spacers from the assembly, and instead put a connection or a joint that represents that i have a screw joint applied at each location, while at the same time taking into effect the interference and constraints that will be applied to the screw when i perform the modal analysis, followed by a response spectrum analysis in order to study a certain shock that the assembly may experience. I was wondering if this idea is applicable in ansys, or is it mandatory to represent them geometrically in order to study them in the analysis. And in case that it's possible to simplify them, i would like to know what sort of connections or joints i may use and how to apply them. Thank you in advance for your responses.

[Erik Kostson]

Hello

See our courses on this:

https://innovationspace.ansys.com/courses/learning-track/pre-loaded-bolted-connections/

https://innovationspace.ansys.com/product/connecting-bolts-with-assembly/

https://innovationspace.ansys.com/courses/courses/topics-under-connections-in-ansys-mechanical/lessons/using-object-generator-to-create-multiple-beam-connections/

And more in the learning section of the forum.

If you need some more specific support e.g., also to look at your geometry (we can not do that here), I would also suggest to contact your Channel Partner .

All the best

Erik