week6-3

# Week6-3 - Assignment Assignment#6 Forsubmission 8.16 8.22 Forpractice 8.17 8.36 8.50 8.45 DueTuesday,March3rd at12noon Beam BeamDesignExample

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ssignment #6 Assignment #6 For submission .16 .22 .50 8.16 8.22 8.50 For practice 8.17 8.36 8.45 TdMh 3 t 12 Due Tuesday, March 3 rd at 12 noon

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eam Design Example Beam Design Example W18 × 35, S = 57.6 in³ W16 × 31, S = 47.2 in³ 14 2 S 29 0 in³ W14 × 22, S = 29.0 in³ W12 × 26, S = 33.4 in³ W10 × 30, S = 32.4 in³ W8 × 40, S = 35.5 in³ t il ill b ht t Most economical will be lightest. W14 × 22 Wide flange beam, 14 inches deep, 22 lb/ft
eams of two materials Beams of two materials

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exure Formula Flexure Formula x y M = σ Stress in a beam produced y a bending moment z I by a bending moment This relationship assumes that the beam is homogeneous. For a beam with two materials (two different elastic modulli) the relationship will have to be modified.
ansformed ction Method Transformed Section Method Transform the two component beam into an equivalent beam that as only one material has only one material. The flexure formula would apply to e transformed shape the transformed shape.

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ansform to equivalent beam? Transform to equivalent beam? The transformed cross section must yield the same bending strains as the actual cross ction section. y rain ρ ε x = Strain
ansform to equivalent beam? Transform to equivalent beam?

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## This note was uploaded on 12/01/2009 for the course CIVE 207 taught by Professor Shao during the Winter '09 term at McGill.

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Week6-3 - Assignment Assignment#6 Forsubmission 8.16 8.22 Forpractice 8.17 8.36 8.50 8.45 DueTuesday,March3rd at12noon Beam BeamDesignExample

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