My name is Shlomi Hadar and I am studying Material Engineering at Ben Gurion University. My partner and I are designing a more resistant and useful umbrella. We had done a lot of researches about normal umbrellas and we found that a normal umbrella has about 24 fragile points. We are trying to reduce the number of fragile points. On solidworks we created the top and the body of our umbrella but we have some problems with the arms ( which holds the body and top together). What can we do to design more resistant arms with less fragile points? Secondly, I want to ask what material can we use to make it more strong?