[理工] [材力]-Strain and Material Relations

看板Grad-ProbAsk作者 (阿傑)時間15年前 (2010/03/29 21:01), 編輯推噓2(2推 0噓 7→)
留言9則, 5人參與, 最新討論串3/3 (看更多)
The cast-iron pipe shown,which has lengh L=0.5m, outside diameter D=130mm, and wall thicknesses t=15mm, is under an axial tension P=200kn. Determine the change in (a)length △L (b)diameter △D;and (c)thickness △t. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 220.139.152.8
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03/29 21:57, , 1F
條件都給完了?? 總覺得有少
03/29 21:57, 1F
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03/29 22:27, , 2F
E?
03/29 22:27, 2F
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03/29 22:36, , 3F
E=105GPa ν=0.3
03/29 22:36, 3F
推
03/29 23:51, , 4F
有沒有答案阿 (B) (C)有點想不出來
03/29 23:51, 4F
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03/30 00:16, , 5F
(a)0.176mm (b)-0.014mm (c)-0.0016mm
03/30 00:16, 5F
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03/30 01:37, , 6F
(a)PL/EA (b)先求x(—>)方向應力再由廣義虎克定律算εy
03/30 01:37, 6F
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03/30 01:38, , 7F
算出來再乘D 就是D的變化量 (c)將b小題算出來的εy乘t就
03/30 01:38, 7F
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03/30 01:39, , 8F
是答案
03/30 01:39, 8F
推
03/30 12:29, , 9F
問題圓柱中空的廣義虎克定律套進去就怪怪的阿...
03/30 12:29, 9F
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