9 beam deflection

Deflection of Beams Deformation of a Beam Under Transverse Loading Equation of the Elastic Curve Direct Determination of the Elastic Curve From the Load Di... Statically Indeterminate Beams Sample Problem 9.1 Sample Problem 9.3 Method of Superposition Sample Problem 9.7 Application of Superposition to Statically Indeterminate ... Sample Problem 9.8 Moment-Area Theorems Application to Cantilever Beams and Beams With Symmetric ... Bending Moment Diagrams by Parts Sample Problem 9.11 Application of Moment-Area Theorems to Beams With Unsymme... Maximum Deflection Use of Moment-Area Theorems With Statically Indeterminate...

Deformation of a Beam Under Transverse Loading ,[object Object],[object Object],[object Object],[object Object],[object Object]

Deformation of a Beam Under Transverse Loading ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Equation of the Elastic Curve ,[object Object],[object Object]

Equation of the Elastic Curve ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Direct Determination of the Elastic Curve From the Load Distribution ,[object Object],[object Object],[object Object],[object Object]

Statically Indeterminate Beams ,[object Object],[object Object],[object Object],The beam is statically indeterminate. ,[object Object],which introduces two unknowns but provides three additional equations from the boundary conditions:

Sample Problem 9.1 ,[object Object],[object Object],[object Object],[object Object],[object Object],For portion AB of the overhanging beam, ( a ) derive the equation for the elastic curve, ( b ) determine the maximum deflection, ( c ) evaluate y max .

Sample Problem 9.1 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Sample Problem 9.1 ,[object Object],Substituting,

Sample Problem 9.1 ,[object Object],[object Object]

Sample Problem 9.3 ,[object Object],[object Object],[object Object],[object Object],For the uniform beam, determine the reaction at A , derive the equation for the elastic curve, and determine the slope at A . (Note that the beam is statically indeterminate to the first degree)

Sample Problem 9.3 ,[object Object],[object Object],[object Object]

Sample Problem 9.3 ,[object Object],[object Object],at x = 0,

Method of Superposition ,[object Object],[object Object],[object Object]

Sample Problem 9.7 For the beam and loading shown, determine the slope and deflection at point B . SOLUTION: Superpose the deformations due to Loading I and Loading II as shown.

Sample Problem 9.7 Loading I Loading II In beam segment CB, the bending moment is zero and the elastic curve is a straight line.

Sample Problem 9.7 Combine the two solutions,

Application of Superposition to Statically Indeterminate Beams ,[object Object],[object Object],[object Object],[object Object]

Sample Problem 9.8 For the uniform beam and loading shown, determine the reaction at each support and the slope at end A . ,[object Object],[object Object],[object Object]

Sample Problem 9.8 ,[object Object],[object Object],[object Object],[object Object]

Sample Problem 9.8 Slope at end A ,

Moment-Area Theorems ,[object Object],[object Object],[object Object],[object Object]

Moment-Area Theorems ,[object Object],[object Object],= tangential deviation of C with respect to D

Application to Cantilever Beams and Beams With Symmetric Loadings ,[object Object],[object Object]

Bending Moment Diagrams by Parts ,[object Object],[object Object],[object Object],[object Object],[object Object]

Sample Problem 9.11 ,[object Object],[object Object],[object Object],[object Object],For the prismatic beam shown, determine the slope and deflection at E .

Sample Problem 9.11 ,[object Object],[object Object],[object Object]

Application of Moment-Area Theorems to Beams With Unsymmetric Loadings ,[object Object],[object Object],[object Object]

Maximum Deflection ,[object Object],[object Object],[object Object]

Use of Moment-Area Theorems With Statically Indeterminate Beams ,[object Object],[object Object],[object Object]

9 beam deflection

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