Beam Deflection

Solution to Problem 642 | Deflection of Cantilever Beams

Problem 642
Find the maximum deflection for the cantilever beam loaded as shown in Figure P-642 if the cross section is 50 mm wide by 150 mm high. Use E = 69 GPa.
 

Uniform load over the free end of cantilever beam

 

Solution to Problem 641 | Deflection of Cantilever Beams

Problem 641
For the cantilever beam shown in Fig. P-641, what will cause zero deflection at A?
 

Unknown point force P and counterclockwise moment in cantilever beam

 

Solution to Problem 640 | Deflection of Cantilever Beams

Problem 640
Compute the value of δ at the concentrated load in Prob. 639. Is the deflection upward downward?
 

Cantilever beam with uniform downward load and concentrated upward load

 

Solution to Problem 639 | Deflection of Cantilever Beams

Problem 639
The downward distributed load and an upward concentrated force act on the cantilever beam in Fig. P-639. Find the amount the free end deflects upward or downward if E = 1.5 × 106 psi and I = 60 in4.
 

Cantilever beam with uniform downward load and concentrated upward load

 

Solution to Problem 638 | Deflection of Cantilever Beams

Problem 638
For the cantilever beam shown in Fig. P-638, determine the value of EIδ at the left end. Is this deflection upward or downward?
 

Cantilever Beam with Clockwise Moment Load at Midspan

 

Solution to Problem 637 | Deflection of Cantilever Beams

Problem 637
For the beam loaded as shown in Fig. P-637, determine the deflection 6 ft from the wall. Use E = 1.5 × 106 psi and I = 40 in4.
 

637-cantilever-uniform-loads.gif

 

Solution to Problem 636 | Deflection of Cantilever Beams

Problem 636
The cantilever beam shown in Fig. P-636 has a rectangular cross-section 50 mm wide by h mm high. Find the height h if the maximum deflection is not to exceed 10 mm. Use E = 10 GPa.
 

Cantilever beam with two concentrated loads

 

Deflection of Cantilever Beams | Area-Moment Method

Generally, the tangential deviation t is not equal to the beam deflection. In cantilever beams, however, the tangent drawn to the elastic curve at the wall is horizontal and coincidence therefore with the neutral axis of the beam. The tangential deviation in this case is equal to the deflection of the beam as shown below.
 

Area-Moment Method | Beam Deflections

Area Moment Method Part 1 - Basic Concepts | Theory of Structures

Another method of determining the slopes and deflections in beams is the area-moment method, which involves the area of the moment diagram.
 

Deviation and Slope of Beam by Area-Moment Method

 

Solution to Problem 621 | Double Integration Method

Problem 621
Determine the value of EIδ midway between the supports for the beam shown in Fig. P-621. Check your result by letting a = 0 and comparing with Prob. 606. (Apply the hint given in Prob. 620.)
 

621-given-figure.jpg

 

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