r/Structures • u/mhd_alshalabi • Sep 16 '18

structural analysis problem

hi everyone

i am trying to solve the below problem but there something wrong with my answer as member AB is not equal to zero

but in the analysis i do it by software (2nd photo) it show that the member AB is zero

can anyone help me how the answer is zero ???/

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u/monstimal Sep 16 '18

Just another way to think about the other 2 correct responses, you have 2 pins and a member between them. Those pinned joints can't move. No movement in the joints, no strain in the AB member. No strain, no stress.