question archive (a) At a point underground, it has been established that a hydrostatic compressive stress state exists i
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(a) At a point underground, it has been established that a hydrostatic compressive stress state exists i.e. σx = σy = 4.0 x 106 N/m2. Given that the shear stresses, τxy, which cause an anticlockwise moment on the plane on which σx acts are of a magnitude of 3.0 x 106 N/m2, determine
i.The magnitude and direction of the principal principal stresses.
ii.The stress state on a plane inclined at 20o from the σx stress direction measured anticlockwise.