機械力學-卡式定理求樑的撓度 - 考試
By Rachel
at 2015-05-18T09:00
at 2015-05-18T09:00
Table of Contents
[課業] 國考課業相關問題,歷屆考題的討論,如學理觀念的釐清。
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http://i.imgur.com/MxIlCBI.jpg
http://i.imgur.com/b7RggId.jpg
題目如上所示,主要的疑問在於最後的積分
偏微分符號以D表示
Dc=DU/DP=2∫(M/EI)*DM/DP*dx=2∫(Px/2)(x/2)/EI*dx=PL^3/48EI
其中48是如何積分的?
(Px/2)(x/2)結果也不過Px^2/4,還要乘上最外面的2
是如何解出這種答案?
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