Normal and Shear Stresses from a Plane

Users can define a plane which they can select the view normal stress or shear stress using the selected plane. First, the user has to select the plane. Then,

1. Select: Interpret > View Normal Stress Using selected plane or View Shear stresses using selected plane.

RS3 automatically defines a user data equation suing the plane normal and switches to the new data type. The equations used for normal and shear stresses are as followed:

Normal Stress:

(sxx * nx + sxy * ny + sxz * nz) * nx +

(sxy * nx + syy * ny + syz * nz) * ny +

(sxz * nx + syz * ny + szz * nz) * nz

Shear Stress:

spx = (sxx * nx + sxy * ny + sxz * nz)

spy = (sxy * nx + syy * ny + syz * nz)

spz = (sxz * nx + syz * ny + szz * nz)

spn = (spx * nx + spy * ny + spz * nz)

sqrt ((spx * spx + spy * spy + spz * spz) - (spn * spn))