机械原理(第二版,孔建益)作业解答.pdf

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1、《机械原理》习题答案武汉科技大学机械原理教研组编著1第二章机构结构分析习题答案2-2:F=3×3-2×4-1=0D点产生运动干涉。F=3×4-2×5-1=12-3:滚子D摆杆F=3×7-(2×9+2)=1C滑块DFFCE滑杆BEB齿轮及凸轮ωAA连杆oO齿轮及偏心轮压头机架22-7：CACBBDAD(a)(b)F=3×4-(2×5-1)=1F=3×6-（2×7-3）=12-9：F=3×7-2×10=1II级机构32-10:F=3×7-2×10=1II级机构2-11:F=3×5-2×7=1II级机构2-12:III级组F=3×5-2×7=1III级机构42-

2、13:F=3×7-2×10=1III级机构III级II级组2-14:五个II级组F=3×11-2×16=1II级机构5第三章平面机构的运动分析习题答案3-1：a·cosφ1+b·cosφ2=sa·sinφ1+b·sinφ2=esinφ2=(e-a·sinφ1)/b3-2：ω2=0.7153rad/svc=178.4412mm/s3-3：φ2=-9.10814º，φ3=75.07084º，φ5=104.9292º，ω2=-2.0147rad/s，ω3=6.5146rad/sSe=233.1225mm，ω5=-6.5146rad/s，ve=839.1617mm

3、/s.23-4：Ve=0.3757m/s，ae=-2.08m/(s)3-5：φ1=76.6726º，-bsinφ2csinφ3dsinφ40ω2aω1sinφ1bcosφ2-ccosφ3-dcosφ40ω3=aω1cosφ10S35sinφ3-dsinφ4-cosφ3ω400-S35cosφ3dcosφ4-sinφ3V3503-6：φ1=81.9614º，φ2=168.4846º，ω1=40.0738rad/s23-7：ω3=4.904rad/s，ε3=-14.3253rad/(s)3-8：VS2=4000mm/s，βvs2=150º223-9：ω3=80

4、.2524rad/s，ε3=43295.4216rad/(s)，ac=7660.07m/(s)，βac=14.691º，vc=14.0442m/s，βvc=6.2346º23-10：ω2=10rad/s，ε2=-57.7350rad/(s)3-11：(φ1=30º)(φ2=175.5816º，φ3=107.5747º，φ4=85.992º,S5=0.6578M。)2ve=-0.2248m/s，ae=1.3642m/(s)3-12：ω1/ω3=2.3462，vD=8.41m/s，βvD=-74.6488º23-13：s3=290.9539mm,v3=-0.5

5、13m/s,a3=-14.1m/(s)6223-14：v3=8.0m/s,a3=126.96m/(s).ac=316.1146m/(s)23-15：vc=217.408mm/s,vd=316.27mm/s,βvd=105º,ad=551.191mm/(s),βad=-85.4948º23-16:vB=0.5196m/s,βvB=100.00º,aB=0.7422m/(s),βaB=-80.00º3-17:φ1=0º,v2=200mm/s;φ1=45º,v2=141.4214mm/s;φ1=90º,v2=03-18:Ap13=a/cos(90-α)，ω1=1

6、7.321rad/s3-19:β=90-α，Ap12=R/tanβ,ω2=10rad/s.3-20:EF与AD线的交点即p13，ω1/ω3=Dp13/Ap133-21:构件1与机架重合，即φ1=α3-22:φ2=-2.9869º,φ3=21.4149º,φ4=-81.7372º,φ5=-51.3839ºω2=-7.2329rad/s，ω3=6.1331rad/s,ω4=-23.2513rad/s,ω5=-15.7455rad/s.222ε2=65.6263rad/(s)，ε3=1008.1759rad/(s)，ε4=-4018.991rad/(s)，2ε5

7、=-2500.6992rad/(s)7第四章机构的力分析习题答案4-1:φ2=-12.373º,s3=0.393m,ω2=-34.4586rad/s,v3=-13.5438m/s,222ε2=5152.2566rad/(s),a3=-1763.135m/(s),aS2=2101.9983mm/(s),βaS2=213.5972º,FI3=3778.1464N,FI2=5362.2406N,βFI2=33.5972º,ΜI2=-218.97N·M.4-2:FI3=-78.5503N,Mb=-7.6338N·M.4-3:FI3=8.837N,Mb=20.582

8、N·M.4-4:R31=53.3523N,R32=11.0926N