36 ZAIN IQbigås - Strength of materials5-2 Derivation of Flexure Formula163507. In a laboratory test of a beam loaded by end couples, thefibers at layer AB in Fig. P-507 are found to increase 30 x 10-3 mmwhile those at CD decrease 90 x 10-3 mm in the 200-mm-gage length.Using E - 100 GPa, determine the flexural stress in the top and bottomfibers.200 mm-50 mmAB100 mmD75 mmFigure P-507.508. Determine the minimum width b of the beam shown in Fig.P-508 if the flexural stress is not to exceed 10 MPa.Ans. b = 75.0 mm5000 N1 m2000 N/m200 mm1 m3 mR1R2Flgure P-508.509.A box section used in aircraft is constructed of tubesconnected by thin webs as shown in Fig. P-509. Each tube has across-sectional area of 130 mm2. If the average stress in the tubes is notto exceed 70 MPa, determine the total uniformly distributed load thatcan be supported on a simple span 4 m long. Neglect the effects of thewebs.100 mm100 mm200 mm150 mmFigure P-509.1645 Stresses in Beams510. A 40-mm diameter bar is used as a simply supported beam2 m long Determine the lareest uniformly distributed load which can be

Answered: 508. Determine the minimum width b of…

508. Determine the minimum width b of the beam shown in Fig. P-508 if the flexural stress is not to exceed 10 MPa. Ans. b- 75.0 mm 5000 N 1 m 2000 N/m 200 mm 1 m 3 m R1 R2 Figure P-508.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Beams and Frames

A beam is a horizontal structure or a member which is always subjected to transverse shear loads.

Question

36 ZAIN IQ
bigås - Strength of materials
5-2 Derivation of Flexure Formula
163
507. In a laboratory test of a beam loaded by end couples, the
fibers at layer AB in Fig. P-507 are found to increase 30 x 10-3 mm
while those at CD decrease 90 x 10-3 mm in the 200-mm-gage length.
Using E - 100 GPa, determine the flexural stress in the top and bottom
fibers.
200 mm-
50 mm
A
B
100 mm
D
75 mm
Figure P-507.
508. Determine the minimum width b of the beam shown in Fig.
P-508 if the flexural stress is not to exceed 10 MPa.
Ans. b = 75.0 mm
5000 N
1 m
2000 N/m
200 mm
1 m
3 m
R1
R2
Flgure P-508.
509.
A box section used in aircraft is constructed of tubes
connected by thin webs as shown in Fig. P-509. Each tube has a
cross-sectional area of 130 mm2. If the average stress in the tubes is not
to exceed 70 MPa, determine the total uniformly distributed load that
can be supported on a simple span 4 m long. Neglect the effects of the
webs.
100 mm
100 mm
200 mm
150 mm
Figure P-509.
164
5 Stresses in Beams
510. A 40-mm diameter bar is used as a simply supported beam
2 m long Determine the lareest uniformly distributed load which can be

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