《工程力学》期末复习题

5789.GC，或））））））））f）1(C3和)，则支座B；BABCAFM（F；FFF0XRYXYMF00XRRYs/ANBCABN；N。NBC和、13(A。(A)0000(D)。(C)D）PP12、12(B)(B)[2[(D。ππ；222。222ｄC；；；。dddd444416324。=(C)0000(D)、段段段7。C）MQMQMQ、MQ(B)M(A与Bl．ABMABFF'即AB2222ABBBABCMlBC22XAC2MlA4,及mDm。12B2332233P6212112m12PM9549,nernP20kW8.P20M954995491909.8Nmn1000er1为主动轮，输入功率P50kW某传动轴，转速n3与9.110kWPP20kW。轮4P，23413mm1mm3422341800800800题5-5图PM95491591.5Nm1n1PM9549318.3Nm2ne2PMM9549636.6Nm3ne3e418P、q、m和M。maxmaxPmPaPPAABBCCDaaaaa(b)mqmBBAACCa2a2aa(c)(d)ql4l2l4(e)3kN2kN2kN3kNFkN,F2kNNmaxNmax300060MPa40MPa501062000tmaxcmax5010650kNP与BCP与1220mmd30mm与BCP为d与122PP21ABC题12图ABPBCPP112dd224412PkN2200kNP100kN，段题图所示P，12d40mm与BCBC1ABPBCPP112dd224412d48.99mm2、b、aca09022m2m6023题13图1M20kNm,I0.060.093.64510m36412z0a200000.023.645106109.7MPa拉)246.9MPa)b200000.0453.645106cTqmA84BC241Im54z题6-12图243392.51T3331.31C3355.62T33164.52CMPa203040(a)题15图）60xyxcos2sin227.32MPaxyxy22xsin2cos227.32MPaxy2xMPa3202550(a)(b)题16图(a)20xyx()257xyxy222maxx26xyxy222minxx00xminxyx(xyxy2222xxyxy222minxx00xmin由和；杆F。ACF6BxACBCyACBCACAC],其中S为杆AC的截面积，查表得：S215.692AC2SACACACFBC杆强度条件：],其中S为杆BC的截面积，查表得：S35.578cmBC2SBCACBCFF502FFFBPA，CP12P3123ABC题18图p368500m954995497028Nm2n2p221m954995494220.66Nm3n5003轴的最大扭矩为7028NmTT由轴的强度条件：]d67.5mm13[]d316，lqBAhbl题19图11M244,2288M2l3.89[]1016W28l12FFABlll333M2.2354m331d2a3d12330P2段上产生2P123P题21图PA3025218.75