作者a1133333 (阿傑)
看板Grad-ProbAsk
標題[理工][材力]Strain and Material Relations
時間Mon Mar 29 21:01:30 2010
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.
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1F：→ moonaya:條件都給完了?? 總覺得有少 03/29 21:57
2F：→ kwei1027:E? 03/29 22:27
3F：→ a1133333:E=105GPa ν=0.3 03/29 22:36
4F：推 qoodeva:有沒有答案阿 (B) (C)有點想不出來 03/29 23:51
5F：→ a1133333:(a)0.176mm (b)-0.014mm (c)-0.0016mm 03/30 00:16
6F：→ boy210637:(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
7F：→ boy210637: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
8F：→ boy210637:是答案 03/30 01:39
9F：推 qoodeva: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