A glue-laminated timber beam is reinforced by carbon fiber reinforced plastic (CFRP) material bonded to its bottom surface. The cross section of the composite beam is shown in figure below. The elastic modulus of the wood is E= 12 GPa and the elastic modulus of the CFRP is 112 GPa. The simply supported beam spans L = 6 m and carries a concentrated load P= 3.8 kN at midspan, see figure below. b₁ A L/2 If b₁ = 88 mm and b₂ = 41 mm determine: P B L/2 CFRP b₂ 250 mm 3 mm c) moment of inertia about the horizontal centroidal axis for timber. Enter your answer in mm² to 1 decimal place. d) moment of inertia about the horizontal centroidal axis for transformed CFRP. Enter your answer in mm² to 2 decimal places. e) moment of inertia about the horizontal centroidal axis for the whole section. Enter your answer in mm² to 2 decimal places.
A glue-laminated timber beam is reinforced by carbon fiber reinforced plastic (CFRP) material bonded to its bottom surface. The cross section of the composite beam is shown in figure below. The elastic modulus of the wood is E= 12 GPa and the elastic modulus of the CFRP is 112 GPa. The simply supported beam spans L = 6 m and carries a concentrated load P= 3.8 kN at midspan, see figure below. b₁ A L/2 If b₁ = 88 mm and b₂ = 41 mm determine: P B L/2 CFRP b₂ 250 mm 3 mm c) moment of inertia about the horizontal centroidal axis for timber. Enter your answer in mm² to 1 decimal place. d) moment of inertia about the horizontal centroidal axis for transformed CFRP. Enter your answer in mm² to 2 decimal places. e) moment of inertia about the horizontal centroidal axis for the whole section. Enter your answer in mm² to 2 decimal places.
Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter6: Stresses In Beams (advanced Topics)
Section: Chapter Questions
Problem 6.2.4P: A wood beam with cross-sectional dimensions 200 mm x 300 mm is reinforced on its sides by steel...
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Step 1: Given data
VIEWStep 2: Calculation of modular ratio and draw equivalent wooden beam
VIEWStep 3: Calculation of y coordinate of centroid for the equivalent wooden beam
VIEWStep 4: Calculation of moment of inertia about horizontal centroidal axis for timber, CFRP, & whole section
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