Recent content by xrayzulu

Hello all. I am give a pin jointed truss structure. (Look at attached jpeg image) I have a worked solution of: F2*4 + F1*3-Av*6=0 Av=1/6(3F1+4F2)=600kN Ch=F2=600kN Cv=Av-F1=200kN Member forces: S1=-5/4 Av = -750kN S2=-CH=-600kN S5=3/4 Av=450kN S3=-5/4 s4=250kN...

I am given E= 210 GPa v=0.3 \sigma= [ -20 15 ] 15 30 How do I find G = ? and \epsilon Any help much appreciated.