MT-1620 al.2002 For such cases: A s A Innel Hence τds≈∮τds≈2GRkA Inner Note: basic difference from singly-connected boundaries(open sections Figure 12.9 Representation of stress distribution through thickness in open cross-section under torsion τ ros varies linearly through-the-thickness very important difference Now, we need to find the boundary conditions Paul A Lagace @2001 Unit 12-13MIT - 16.20 Fall, 2002 For such cases: Aouter ≈ Ainner ≈ A Hence: ∫ τ ds ≈ ∫ τ ds ≈ 2GkA outer inner Note: basic difference from singly-connected boundaries (open sections). Figure 12.9 Representation of stress distribution through thickness in open cross-section under torsion very important difference τres varies linearly through- the-thickness Now, we need to find the boundary conditions: Paul A. Lagace © 2001 Unit 12 - 13