Question

A rectangular plate of dimensions X = 265 mm and Y = 100 mm is formed by welding two triangular plates (see figure). The plate is subjected to a compressive stress o of 4 MPa in the long direction and a tensile stress Oy of 14.5 MPa in the short direction. Using Mohr's Circle (2 points for the correct drawing); determine the normal stress ow acting perpendicular to the line of the weld and the shear stress tw acting parallel to the weld. (Assume that the normal stress ow is positive when it acts in tension against the weld and the shear stress tw is positive when it acts counterclockwise against the weld.) Mpa) Ymm Weld IM! Answer: Ow (MPa) Tw (MPa) =

Answer 1

Selain Gy=14. smpa weld Uus @ 4mPa on Stresses acting plane I = (x, Txy) = (-4, 0) = (cy, Try) = (14.5, 0) o (5-25,9) 1 814.50) Radics of mahr circle = 1405-5.25 = 9.25 mla Centre of circle (3+3,0) =(-+ + 14.5.)=5-25,0) xe axis make in perpendicular to the welded plane make angle of 45° with the perpendicular on plane I the Counter clockwise direction will an angle of go from mohr circle To (normal stress acting perpendicular to the line of weld) 5.25 mpa Tw(shear stress aching paralld to the weld) = Radius of circle = 9.25m la Canticlockwise) So