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HOW TO APPLY OUT OF PLANE CYCLIC LOAD PROTOCOL

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 BMAD
Topic starter
(@bmad)
Unpaid Intern
Joined: 3 years ago

HELLO everyone. I am new here.

I am modelling masonry wall in LS DYNA. Airbags (inflate and deflect) were used to apply the displacement out-of-plane loading on the wall in a semi-cyclic manner. I have recently been trying to replicate the experiment setup using the LS DYNA, as shown in the image; however, I am having difficulty applying the loading protocol. I do not know which LS DYNA keyword to use for the application of the out-of-plane loading protocol. The airbags, when inflated, provide a spatially uniformly distributed loading on the wall. I know that the loading protocol can be applied using the BOUNDARY_PRESCRIBED_MOTION keyword for the In-plane loading simulation. I would be glad to know the LS DYNA keywords or methods to apply the loading successfully?

 MASONRY WALL
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Posts: 4
 BMAD
Topic starter
(@bmad)
Unpaid Intern
Joined: 3 years ago

Please someone should help me. 

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Negative Volume
Admin
(@negativevolume)
Joined: 5 years ago

CEO
Posts: 641

Hi @bmad

I mean, if you have the data to replicate the airbags, you can create the same loading scenario via inflating airbags and adding contacts to the wall. Airbag modeling is sort of its own specialty within LS-Dyna so you will need to do quite a bit of reading into airbag modeling. Below is a tutorial for a simple airbag. 

https://www.dynaexamples.com/introduction/examples-manual/misc/airbag

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