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Mechanical Engineering Design 8th by Shigley 8판 솔루션

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갱신일 : 2010-05-04


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SHIGLEY MECHANICAL ENGINEERING DESIGN 8판 솔루션
Shigley 저
2008년판
챕터 1 ~ 10장까지
Philadelphia University Mechanical Engineering Design 8th eng.ahmad jabali

Chapter 1
Problems 1-1 through 1-4 are for student research. 1-5 (a) Point vehicles
v x

Q= Seek stationary point maximum

cars v 42.1v ? v 2 = = hour x 0.324

dQ 42.1 ? 2v =0= ∴ v* = 21.05 mph dv 0.324 Q* = (b) 42.1(21.05) ? 21.052 = 1368 cars/h Ans. 0.324
v l 2 x l 2

000001 v 0.324 l = Q= + 2 x +l v(42.1) ? v v Maximize Q with l = 10/5280 mi v 22.18 22.19 22.20 22.21 22.22 Q 1221.431 1221.433 1221.435 ← 1221.435 1221.434

?1

% loss of throughput = (c) % increase in speed

1368 ? 1221 = 12% 1221

Ans.

22.2 ? 21.05 = 5.5% 21.05 Modest change in optimal speed Ans.

Philadelphia Universit…(생략)
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