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批踢踢實業坊 Examination 板

機械設計問題

May 10th 2015, 11:09, by RiceJar

作者RiceJar (RiceJar)

看板Examination

標題機械設計問題

時間Sun May 10 11:09:05 2015

小弟基礎沒有很好,念了一點材力就買了機械設計來念，所以小弟笨笨的問 http://i.imgur.com/UMMVj20.jpg

http://i.imgur.com/EdcYIml.jpg

http://i.imgur.com/f1MCJiN.jpg

B點位置的剪應力相較A點為何會多加一個4V/3A? (我知道圓形斷面樑的最大剪應力為平均剪力的4/3倍。τmax=4V/3A) 軸向拉應力相較A點則沒有了彎曲應力想請版上高手解惑，關於此題軸AB點的判斷觀念，感謝! -- Sent from my Android -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 42.75.49.150 ※ 文章網址: https://www.ptt.cc/bbs/Examination/M.1431227348.A.146.html

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