hibbeler chapter6 solution
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정역학 , hibbeler chapter6 솔루션기계설계솔루션 , 12
솔루션/기계설계
12,기계설계,솔루션
Engineering Mechanics - Statics
Chapter 6
Problem 6-1 Determine the force in each member of the truss and state if the members are in tension or compression. Units Used: kN = 10 N Given: P 1 = 7 kN P 2 = 7 kN Solution:
3
θ = 45 deg
Initial Guesses: F AB = 1 kN F DC = 1 kN Given Joint A: F AB + F AD cos ( θ ) = 0 ?P 1 ? F AD sin ( θ ) = 0 Joint D: F DB cos ( θ ) ? F AD cos ( θ ) + F DC cos ( θ ) = 0 F AD = 1 kN F CB = 1 kN F DB = 1 kN
(FAD + FDB ? FDC)sin(θ ) ? P2 = 0
Joint C: F CB + FDC sin ( θ ) = 0
? FAB ? ? ? ? FAD ? ? ? ? FDB ? = Find ( FAB , FAD , FDB , FDC , FCB) ?F ? ? DC ? ? FCB ? ? ?
? FAB ? ? ? ? 7 ? ? FAD ? ? ?9.9 ? ? ? ? ? ? FDB ? = ? 4.95 ? kN ? F ? ? …(To be continued )
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hibbeler chapter6 solution
정역학
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