What you are to accomplish: 408 A. A thin-walled circular cylindrical vessel of diameter d and wall thickness t is subjected to internal pressure p. Given a small circular hole in 5pd pd the vessel wall, show that the maximum tangential and axial stresses at the hole are = and = respectfully. 4t 4t' Boundary conditions: Without hole damage: With hole: 20 As Designed FBD Hint A7.1 08 = = pd 20 (1) As Damaged FBD HintA7.2 (2) Given: 00 100 [(1) = % [(1 ) - (1+) cos 26]. with r=a.