In this video tutorial, we will learn about performing post buckling analysis of cylindrical shells under hydrostatic pressure in ANSYS Workbench. Also, we will see how to create pre buckled model of the cylindrical shell with the desired buckling mode and deformation scale factor for use in the post-buckling analysis. Cylindrical shells can fail due to compression in the longitudinal or circumferential direction, or due to shear. But usually, due to all of those effects combined in one way or another. Plus, this can happen locally or globally.
Why buckling analysis is important? Buckling is one of the main reasons for mechanical failures, so obviously, all mechanical, civil, aerospace, etc. engineers should be aware of that and be able to model buckling and post-buckling in FEM software like ANSYS.
It is very dangerous because buckling failure can happen much before the material failure (Yielding). Another important point about buckling is that it is not detectable in FEA if you are just performing a linear static analysis. You will have to perform an actual « buckling » analysis to see its effects.
Buckling is a sudden change in shape (deformation) of a structural component under load, such as the bowing of a column under compression. It is a kind of failure that happens to certain types of slender geometries because of the instabilities of components.
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The music of this video:
♫ “Fresh Fallen Snow” by Chris Haugen is free licensed ♫
This Video is:
● Authored and Recorded by Ali Mokhtari
● Edited and reviewed by Mehdi Moradi