hello every one good day.
i am using abaqus to perform a non linear buckling analysis in order to match it the experimental buckling load ,i have to use imperfection in my model but
Increased the imperfection in thickness from 10 % to 90% , LPF is not changing at all its showing a constant value of 1.73979 . What should I do now ? If i multiply it with the applied load it will even exceed the applied load .
When I am decreasing applied load , LPF shooting up, so cannot decrease applied load either .
Giovanni O. Delle Monache
Instead of imperfections you can use perturbation loads. see https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120008838.pdf
G.
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