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 .
Instead of imperfections you can use perturbation loads. see https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120008838.pdf
G.
Hi
Maybe the imperfection has upper limit influence to LFP.
the buckling and post buckling of mechanical parts like as plate and others, depend of the imperfection level.
how can you model the imperfection and what type of analysis used with abaqus?
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