normal stress in a member of a system = axial force / x-sectional area. Need to determine axial forces (AB, CD, EF). Axial forces and the vertical and horizontal displacements can be related using a compatibility equation using an initial bar length (say Lab, Lcd, Lef) and change in bar length...
Diagram: http://i177.photobucket.com/albums/w222/77whtrocco/NORMALSTRESS.jpg
Given: members AB, CD, and EF have x-sectional area of 25 mm^2. E = 200 GPa. Neglect deformation in member GH.
Find: Normal Stresses in members AB, CD, and EF.
I know that I need to determine the axial forces in these...