P1: The aluminum rod AB (Ga =26 GPa) is bonded to the brass rod BD (Gb = 39 GPa). A fixed support exists at pt. D. Knowing that portion CD of the brass rod is hollow and has an inner diameter of 40 mm, determine: TB = 1600 N-m 36 mm TA = 800 N-m b) the maximum shear stress a) the angle of twist at A in the entire rod 400 mm 60 mm D 250 mm 375 mm