課程名稱︰材料力學
課程性質︰必修
課程教師︰王安邦
開課學院：工學院
開課系所︰化工系
考試日期（年月日）︰2013/1/14
考試時限（分鐘）：100mins
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.A tapered circular shaft of Fig.1 has an axial hole of constant diameter
throughout its length. Determine the angle of twist due to a constant torque
in terms of T,L,G,R,and r.
http://ppt.cc/96PH
2.Fig.2. Using the coordinate axes shown,
a.Write equations for the shear force Vr and bending moment Mr for any section
of the beam.
b.Determine the magnitudes and locations of the maximum shear and the maximum
bending moment in the beam.
http://ppt.cc/hokW
3.A tractor is moving slowly over a bridge, as shown in Fig.3. Neglect the
weight of the beam. The forces exerted on one beam of the bridge by the tractor
are 4050 lb by the rear wheels and 1010 lb by the front wheels. Write equations
for the shear force Vr and the bending moment Mr and plot their diagrams.
Determine the position x of the tractor for which the bending moment in the
beam is maximum.
http://ppt.cc/xs9W
4.A boy with mass of 50kg is standing on a 40x400mm wood(E=10GPa) diving board
,as shown in Fig.4. If the length AB is 0.5m and the length BC is 1.5m,
determine the maximum deflection in the diving board when the boy is standing
oon the end of the board.
http://ppt.cc/kMdi
5.The 160-mm-diameter steel(G=60GPa) shaft shown in Fig.3 has a 100-mm-diameter
bronze(G=40GPa) core inserted in 3m of its right end. The bronze is securely
bonded to the steel. Determine
a.The maximum shearing stress in each of the materials.
b.The rotation of the free end of the shaft.
http://ppt.cc/nbgd
至於為什麼要考兩次期末考.......只能說就是這樣......HAIZ。。。。。。
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