[理工][材力]Strain and Material Relations

[a1133333 (阿傑)]

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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◆ From: 220.139.152.8
→ moonaya:條件都給完了??  總覺得有少
→ kwei1027:E?
→ a1133333:E=105GPa    ν=0.3
推 qoodeva:有沒有答案阿 (B) (C)有點想不出來
→ a1133333:(a)0.176mm (b)-0.014mm (c)-0.0016mm
→ boy210637:(a)PL/EA (b)先求x(—>)方向應力再由廣義虎克定律算εy
→ 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
→ boy210637:是答案
推 qoodeva:問題圓柱中空的廣義虎克定律套進去就怪怪的阿...