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PROBLEMS (10.60 and *10.61) A beam is loaded and supported as shown in Fig. P10.60 and
P10.61. Determine the deflection at the free end .
SOLUTION (10.60)
Q
P
a
a
A
a
C
B
D
Actual
Loading
=
Q
P
a
a
A
C
+
B
D
A
B
Equivalent Loadings
Use Table B.14
vB = (vB ) P + ( vB ) Q
where,
(vB ) P = (vC ) P + (θC ) P (2a)
=−
Pa 3 Pa 2
4 Pa 3
−
(2a) = −
3EI 2 EI
3 EI
(vB )Q = (vD )Q + (θ D )Q (a)
=−
Q(2a)3 Q(2a) 2
14 Qa 3
−
(a) = −
3EI
2 EI
3 EI
Thus,
2a 3
vB =
(2 P + 7Q) ↓
3EI
SOLUTION (*10.61)
P
M0
B
A
L/2 C L/2
L/2 D
Actual
Loading
=
P
A
C
(θ B ) M
P
M0
a
+
B
A
C
B
M0
Continued on next slide
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Use Table B.14 (cases 7, 9, and 2):
vD = ( vB ) M , P + (vD ) M
where,
L
(vD ) M , P = (θ B ) M , P ( )
2
2
PL L M 0 L L
=−
( )−
( )
16 EI 2
3EI 2
(vD )Q = (vD )Q + (θ D )Q (a)
( vD ) M = −
M 0 ( L 2) 2
2 EI
Hence,
vD =
L2
(3PL − 28M 0 )
96 EI
Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or
instructional purposes only to students enrolled in courses for which the textbook has been adopted. Any other
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