Gravity Initialization
Ameen Topa
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Gravity Initialization
5 684 просмотра · 4 г. назад
Ameen Topa
9,04 тыс. подписчиков
5 684 просмотра · 4 г. назад
In this video, I demonstrate how to do the gravity stress initialization for structures. There is more than one method, here I am using Implicit Analysis and a multi-stage simulation approach:
1- In the first simulation, gravity is applied with a ramp curve. Implicit time integration is used. dynain file is created.
2- In the second simulation, you can add whatever dynamic load you want. Use *INCLUDE keyword to call the dynain file (which got the data of the stresses, elements, nodes, and SPC).
Here, the gravity load curve is constant at 9.81 m/s and not ramped anymore because the gravity stresses are already initialized.
Don't forget to delete the elements, nodes, and SPC from your main file to avoid duplicating data.
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