5. Summary of results

The analytical solution gives us 3 buckling modes whose critical loads are roots of a 3rd degree equation.

Are there other critical loads interspersed between the 3 values found?

Aster finds the right critical loads, but in the middle of many others… for example for case 3, the 3 critical loads sought correspond to NUME_MODE: 1, 10 and 19.

This is true for both models.