图示杠杆机构中B处为螺栓联接,材料许用切应力为[img=89x25]18034cea01b918a.png[/img] ,不考虑挤压,已知支座B处约束力为 [img=112x27]18034cea0a8206d.png[/img],则螺栓最小直径为( )。[img=2362x780]18034cea1e33c36.png[/img]
A: d =18 mm
B: d =15.2 mm
C: d =17.7 mm
D: d =18.4 mm
A: d =18 mm
B: d =15.2 mm
C: d =17.7 mm
D: d =18.4 mm
举一反三
- 图示杠杆机构中B处为螺栓联接,材料许用切应力为 [img=99x25]18034cea6257314.png[/img],不考虑挤压,已知支座B处约束力为[img=112x27]18034cea6b558a9.png[/img] ,则螺栓最小直径为( )。[img=2362x780]18034cea78a1ffc.png[/img][img=2362x780]18034cea86b0611.png[/img] A: d =18 mm B: d =15.2 mm C: d =17.7 mm D: d =18.4 mm
- 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
- 图示杠杆机构中B处为螺栓联接,材料许用切应力为 http://edu-image.nosdn.127.net/_PhotoUploadUtils_7a3baa2d-246b-4ad6-b430-80e66d36fa83.png,不考虑挤压,已知支座B处约束力为http://edu-image.nosdn.127.net/_PhotoUploadUtils_b090252d-7a1d-49ae-9a9f-329e8bee92a6.png ,则螺栓最小直径为( )。http://edu-image.nosdn.127.net/49782124E78AD442DDD9D71CDF6FC533.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/BA4A589CA9C97E38D218216266737FE0.png?imageView&thumbnail=890x0&quality=100
- 图示销钉连接。已知:联接器壁厚δ=8mm,轴向拉力F=15kN,销钉许用切应力[ô]=20MPa,许用挤压应力[σbs]=70MPa。试求销钉的最小直径d 为____mm。 [img=258x115]17e0c56b706569b.gif[/img]
- 如图所示的连接若采用普通螺栓连接,则当计算单个螺栓抗剪的孔壁承压承载力时,公式[img=126x28]180361cc458424a.png[/img]中的[img=20x19]180361cc4f4247c.png[/img]应取为:[img=404x128]180361cc5a448b1.jpg[/img] A: 12 mm B: 20 mm C: 24 mm D: 44mm