Problems 511
Ans. 0 D
ql^3
24 EI
12
^3
2 tan
2
;y
l
2
D
5ql^4
384 EI
384
5^4
sec
2
1
^2
8
I
M
l
2
D
ql^2
8
8
^2
sec
2
1
13.18.The uniform beamABis subjected to axial compressive forcePand exter-
nal momentM 0 at the supportA(Fig. P13.18). Calculate the slope at the support
Aand reactions of supportsAandB. Estimate effect of axial load for different
parametersk,
PDkPcr;PcrD
2 EI
.0:7l /^2
:
P A B
M 0
l
Fig. P13.18
Ans.Q 0 D
M 0
l
.cos1/
sincos
,MBDM 0
sin
sincos
:
13.19.The uniform beamAB is subjected to axial compressive forceP and
transversal forceFat the middle point of the beam. Calculate slope at he sup-
portA, and linear displacement and bending moment at the point of forceF.
A B
l/ 2
P
l/ 2
F
Fig. P13.19
Ans. 0 D
Fl^2
16 EI
8
^2
sec
2
1
;y
l
2
D
Fl^3
48 EI
24
^3
tan
2
2
I
M
l
2
D
Fl
4
2
tan
2
;Dl
r
P
EI