[試題] 104-2 劉建豪 材料力學 期末考

作者: mutichung (μΤ)   2016-06-22 04:47:27
課程名稱︰材料力學
課程性質︰必修
課程教師︰劉建豪
開課學院:工學院
開課系所︰機械工程學系
考試日期(年月日)︰2016年6月22日
考試時限(分鐘):120分鐘
試題 :
1.(20%) For the given state of stress, determie (a) the principle planes,
(b) the principal stresses.
http://i.imgur.com/VE1A2cH.jpg
2.(20%) The strains determined by the use of a rosette attached as shown
to the surface of a machine element are ε1 = -93.1×10^-6 mm/mm,
ε2 = +385×10^-6 mm/mm, ε3 = +210×10^-6 mm/mm. Determine (a)
the orientation and magnitude of the principle strains in the
plane of the rosette, (b) the maximum in-plane shearing strains.
(Hint: find εx, εy, γxy)
http://i.imgur.com/TrQ21JN.jpg
3.(20%) Explain why gas cylinders explore in radial direction instead of
in longitudinal direction.
http://i.imgur.com/gELgzB3.jpg
4.(20%) The solid shaft AB rotates at 600rpm and transimits 80kW from the
motor M to a machine tool connected gear F. Knowing that τall =
60MPa, determine the smallest permissible diameter of shaft AB.
http://i.imgur.com/vfiFGzP.jpg
5.(20%) For the cantilever beam and loading shown, determine (a) the
equation of the elastic curve for portion AB of the beam, (b) the
deflection at B, (c) the slope at B.
http://i.imgur.com/LYL8xMv.jpg
6.(20%) (a) Buckle occurs when tension or compression? (b) How to aviod
buckle (we talk three methods in class, answer one of them)?
http://i.imgur.com/dWXzdsi.jpg
考卷最末附上公式表:http://i.imgur.com/P7FRFMg.jpg

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