tutorial(27th and30th April)

tutorial(27th and30th April) - 570 CHAPTER 9 Deflections of...

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Unformatted text preview: 570 CHAPTER 9 Deflections of Beams Problem9.5-9 A horizontal load P acts at end C of the bracket ABC shown in the figure. (a) Detennine the deflection Bc of point C. (b) Detennine the maximum upward deflection Bma>< of member AB. Note: Assume that the flexural rigidity El is constant throughout the frame. Also, disregard the effects of axial defonnations and consider only the effects of bending due to the load P. ............................................................................................................................................................................................................................................................ Solution 9.5-9 Bracket ABC BEAM AB (a) ARM BC Table 0-1, Case 4 PH3 PH3 PH2L B =-+8H=-+- c 3EI B 3EI 3EI PH2 =-(L+H) ~ 3EI Mo = PH MoL PHL Table 0-2, Case 7: 8B = 3EI = 3EI (b) MAXIMUM DEFLEcnON OF BEAM AB MoL2 PHL2 Table 0-2, Case 7: Bm..= ~ = ~ ~ 9 V 3EI 9 V 3EI Problem9.5-10 A beam ABC having flexural rigidity El = 75 kN'm2 is loaded by a force P = 800 N at end C and tied down at end A by a wire having axial rigidity EA = 900 kN (see figure). What is the deflectionat point C when the load P is applied? A r- 0.5rn L ID B C I t P=800N 0.5rn-+--0.75 rn J ...............................................................................................................................................................................................................................................................
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tutorial(27th and30th April) - 570 CHAPTER 9 Deflections of...

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