Answered: B (P -L- (a) (b) PROBLEM 5.6-14

Engineering

Civil Engineering

B (P -L- (a) (b) PROBLEM 5.6-14

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter8: Engineering Materials

Section: Chapter Questions

Problem 85CQ

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Question

A cantilever beam AB with a circular cross section and length L =750 mm supports a load P =800 N acting at the free end (see figure). The beam is made of steel with an allowable bending stress of 120 MPa.

a. Determine the required diameter d_mm(figure part a) of the beam, considering the effect of the beam's own weight.

Repeat part (a) if the beam is hollow with wall thickness t =df$ (figure part b); compare the cross-sectional areas of the two

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