4.11 (A/B). Two bars, one of steel, the other of aluminium alloy, are each of 75 mm width and are rigidly joined together to form a rectangular bar 75 mm wide and of depth (r, +tah where t,- thickness of steel bar and = thickness of alloy bar. Determine the ratio of f, to t, in order that the neutral axis of the compound bar is coincident with the junction of the two bars. (E, 210 GN/m; E,- 70 GN/m2.) If such a beam is 50 mm deep determine the maximum bending moment the beam can withstand if the maximum stresses in the steel and alloy are limited to 13S MN/m and 37 MN/m respectively. (0.577; 1.47 kN m.]

4.11 (A/B). Two bars, one of steel, the other of aluminium alloy, are each of 75 mm width and are rigidly joined together to form a rectangular bar 75 mm wide and of depth (r, +tah where t,- thickness of steel bar and = thickness of alloy bar. Determine the ratio of f, to t, in order that the neutral axis of the compound bar is coincident with the junction of the two bars. (E, 210 GN/m; E,- 70 GN/m2.) If such a beam is 50 mm deep determine the maximum bending moment the beam can withstand if the maximum stresses in the steel and alloy are limited to 13S MN/m and 37 MN/m respectively. (0.577; 1.47 kN m.]

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter9: Moments And Products Of Inertia Of Areas

Section: Chapter Questions

Problem 9.94RP: The properties of the unequal angle section are Ix=80.9in.4,Iy=38.8in.4, and Iu=21.3in.4. Determine...

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