[img=425x122]1799deb4eda75a3.png[/img]题若扭力偶矩[tex=5.357x1.286]VPkI+VRpzVOvLIS+HwOn9djO151S0LJCjuQ6rIHGIdg=[/tex]许用切应力[tex=5.214x1.357]p9sEAiMbz+Xlb0+YlOL6Tcvz2YxpKs0KF2oiBluObUU=[/tex]单位长度许用扭转角[tex=6.286x1.357]JSypA/1GUmQmNu89aFmgjph0eU+SdX+8+Z0O4+Qn5UU1gyRA0b2GGf+ATHVsolcr[/tex]切变模里 [tex=4.571x1.0]2nifFUsavsCM/AW46Sialg==[/tex], 试确定轴径[tex=0.929x1.214]reGzIBWk/oHCN9N6I2G0mA==[/tex] 与 [tex=1.286x1.214]plQa6BS+vtRNezMZbiV8Jg==[/tex]

2022-06-05

[img=425x122]1799deb4eda75a3.png[/img]题若扭力偶矩[tex=5.357x1.286]VPkI+VRpzVOvLIS+HwOn9djO151S0LJCjuQ6rIHGIdg=[/tex]许用切应力[tex=5.214x1.357]p9sEAiMbz+Xlb0+YlOL6Tcvz2YxpKs0KF2oiBluObUU=[/tex]单位长度许用扭转角[tex=6.286x1.357]JSypA/1GUmQmNu89aFmgjph0eU+SdX+8+Z0O4+Qn5UU1gyRA0b2GGf+ATHVsolcr[/tex]切变模里 [tex=4.571x1.0]2nifFUsavsCM/AW46Sialg==[/tex], 试确定轴径[tex=0.929x1.214]reGzIBWk/oHCN9N6I2G0mA==[/tex] 与 [tex=1.286x1.214]plQa6BS+vtRNezMZbiV8Jg==[/tex]

答案：

解 如题图所示， [tex=1.571x1.0]mCjAngcIqtveplNftuY0BQ==[/tex] 段轴内的扭矩[tex=5.143x1.214]DonEOcwHOcWg/nZKILxjLks4ApZLdPMBKcG09/mPct8=[/tex]段轴内 的扭矩[tex=2.714x1.214]QoTR+vfxj4e3e1o0QDQa3Q==[/tex][tex=1.857x1.286]1VzY8n9el4A9x26c25ECzg==[/tex]根据强度条件确定轴径[tex=19.643x12.786]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[/tex][tex=1.286x1.357]BEB68bP4vOVk/XYYizw11w==[/tex] 根据刚度条件确定轴径[tex=24.429x12.357]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[/tex]所以,[tex=1.571x1.0]mCjAngcIqtveplNftuY0BQ==[/tex] 段的轴径[tex=7.143x1.214]AW+0ySbuHl9sX5NJuX8cM3ZOs6ue/HKfjjiDgMVVhLE=[/tex] 段的轴径[tex=5.214x1.214]5RChZ+MlU8jbgSDkhX8gQg==[/tex] 。

举一反三

内容

0
set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为？ A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
1
>>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
2
以下创建数组的方式错误的是（） A: shortx[]；x={1，2，3，4，5，6}； B: shortx[]=newshort[6]；x[0]=9；x[1]=8；x[2]=7；x[3]=6；x[4]=5；x[5]=4； C: shortx[]=newshort[6]；intlen=x.length；for（inti=0；i
3
set1 = {x for x in range(10) if x%2==0} print(set1) 以上代码的运行结果为？ A: {0, 2, 4, 6} B: {2, 4, 6, 8} C: {0, 2, 4, 6, 8} D: {4, 6, 8}
4
设函数f(x)在[tex=3.286x1.357]64m0xE4nFlaKGIakApV0PA==[/tex]上连续，且有f(0)=0及f'(x)单调增，证明：在[tex=3.5x1.357]vgrW1/jK/GZ1TOWaPFIQWA==[/tex]上函数[tex=5.071x2.429]KmCvFjqAEA9O51+9erVGP+KtDDqVtXZQWqxj1eiTO5k=[/tex]是单调增的。