Sx — Engineering quantity. Influences the result through the governing physical formula; check units. Example: 0.1.
Sx is required
Sy — Engineering quantity. Influences the result through the governing physical formula; check units. Example: 0.1.
Sy is required
Txy — Engineering quantity. Influences the result through the governing physical formula; check units. Example: 0.1.
Txy is required
Principal stresses.
Formula
s1 = (sx+sy)/2+Math.sqrt(((sx-sy)/2)**2+txy**2)