Page 100 - 4749
P. 100
2
M l
U x , (5.31)
п
2GJ
к
where W – moment of resistance in torsion;
к
J – moment of inertia in torsion of a noncircular
к
profile rod.
Figure 5.9 - Distribution of tangential stresses in a
rectangular cross-section
On fig. 5.9 character of distribution of tangential stresses in
torsion of a rectangular cross-section of the rod is shown. The
maximum tangential stress occurs in this case in the middle of a
longer side of the rectangle and the geometric characteristics are
calculated by the formulas
2
W hb , (5.32)
t
100
