MT-1620 al.2002 Figure 10.2 Representation of deformation of cross-section due to torsion (for small a) undeformed position This results in consider direction of +u u(X,y,z)=r(inβ V(X,y,z)=r(cosβ) W(X,y,2)=W(X,y) independent of z Paul A. Lagace @2001 Unit 10-p. 7α ⇒ MIT - 16.20 Fall, 2002 Figure 10.2 Representation of deformation of cross-section due to torsion (for small α) undeformed position This results in: consider direction of + u u (x, y, z) = rα (-sin β) v (x, y, z) = rα (cos β) w (x, y, z) = w (x, y) ⇒ independent of z! Paul A. Lagace © 2001 Unit 10 - p. 7