Recent content by Brendanmcg

Thanks Chet... realized my maths was terrible in those attachments... lol corrected my maths but that's just left me with a dead end. eughhhhh! cant tell where you said i implied (σx+σy)=(σx'+σy') came from...?

p.s. sorry about the pics being side ways... cheers

i didnt have an equation for σy but... if σx=-2τxy then τxy= σx/-2 if one of the principle stresses are 40Mpa, if we assume σx is 40Mpa then τxy= -20Mpa so, knowing the angle and assuming τxy is 40Mpa, using mohrs circle and trig functions it just wasn't looking correct. i then...

Homework Statement DIAGRAM ATTACHED AT BOTTOM Q. The following statements are true for an element in plane stress state. (this is 2D) (1) one of the principle stresses is 40Mpa; (2) σx= -2τxy; (the algebraic values) (3) in x'oy' with θ=30°, the two normal stresses σx'=σy' Determine...

Links broken again... :(