The wood beam shown is reinforced on the bottom with a steel strip. Determine the maximum bending moment that can be carried safely by the beam if the allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use n= Es/Ewd=20. 150 mm 300 mm 75 mm 10 mm Hint: The above problem shown is a composite beam – a beam composed of two materials. Accounting for this difference in material we introduce the concept of the "Transformed Section" NA Az Original section Transformed section Transforming the cross section to an equivalent section made entirely of material 1

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Solve the following problem with complete solutions and fbd

The wood beam shown is reinforced on the bottom with a steel strip. Determine the
maximum bending moment that can be carried safely by the beam if the allowable bending
stresses are 120 MPa for steel and 8 MPa for wood. Use n=Eg/Ewd= 20.
150 mm
300 mm
75 mm
10 mm
Hint: The above problem shown is a composite beam – a beam composed of two materials.
Accounting for this difference in material we introduce the concept of the "Transformed
Section"
A1
NA
A2
Original
section
Transformed
section
Transforming the cross section to an equivalent section made entirely
of material 1
Transcribed Image Text:The wood beam shown is reinforced on the bottom with a steel strip. Determine the maximum bending moment that can be carried safely by the beam if the allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use n=Eg/Ewd= 20. 150 mm 300 mm 75 mm 10 mm Hint: The above problem shown is a composite beam – a beam composed of two materials. Accounting for this difference in material we introduce the concept of the "Transformed Section" A1 NA A2 Original section Transformed section Transforming the cross section to an equivalent section made entirely of material 1
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