• 2022-06-15
    图示杠杆机构中B处为螺栓联接,材料许用切应力为 [img=99x25]1803de02f231be6.png[/img],不考虑挤压,已知支座B处约束力为[img=112x27]1803de02fc4c349.png[/img] ,则螺栓最小直径为( )。[img=2362x780]1803de030ae168e.png[/img][img=2362x780]1803de0319c96e7.png[/img]
    A: d =18 mm
    B: d =15.2 mm
    C: d =17.7 mm
    D: d =18.4 mm
  • 举一反三