Question

Problem 2. Determine the maximum shear stress in the bar. The diameter is 24 mm and T = 1000 N.m. Lac= 1.3m and Lbc = 2m. G = 27 GPa.

Answer 1

Ams! Due to torque T acting at section AC ,BC respectively. at C, let Tac, TBC Тем, Т= The + Те ABD of section AC and BC TAC Тас Тес C A TAL Seetion AC section CB

As the bar is in parcalled - Angle of rotation O AC OBC or Tach ac GJ TBC LBC be JBC ACAC GCAC = 62B c = 2 au and JAC=JBC = I TAC LBC TBC = 2 / 2 TBC LAC TAC = 1.54 TBC from er 6, 1:54 TBC &T Be=T=1000 Nim or TBC = 393.7 N.m =393.7 x 103 N.mm Then Tac = 1.54 TBC=606-3 Nam =606.3 x 103 Nimm Maxen forque for circulare bare 16 T Tak 16. I TO

As diameter (d) for bare AC and BC is game, em eman will be ma for section AC (as TockTAc) man 16T AC Tmax = Eman Ac xd3 16 X 606-3x103 243 1223.48 MPa Il Assumptions for Bernouli's equation 1 steady flow Density (e) is constant /incompressible flow, Other two assumptions 1 The flow is inviscid (4=0) 1 The How is along streamline.