I am trying to solve Hollow circular tapered cantilever beam
after solving i geting fatory safety like this
can some tell me
where is my mistake?
One the picture is not clear so i might be missing something , but since there is just one number it seems like you have some sort of boundary condition issue
Go to tools and select stress tools. This will get added to tree and by default you will have safety factor. Then hit solve to get Factor of safety.