课程名称︰材料力学 课程性质︰必修 课程教师︰王安邦 开课学院：工学院 开课系所︰化工系 考试日期（年月日）︰2013/1/14 考试时限（分钟）：100mins 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 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 至於为什麽要考两次期末考.......只能说就是这样......HAIZ。。。。。。 --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.112.246.37