受扭实心等直圆轴,当直径增大一倍时,其最大剪应力τ2max和两端相对扭转角与原来的τ1max和的比值为()。A.τ2max:τ1max=1:2,:=1:4B.τ2max:τ1max=1:4,:=1:8C.τ2max:τ1max=1:8,:=1:16D.τ2max:τ1max=1:4,:=1:16
受扭实心等直圆轴,当直径增大一倍时,其最大剪应力τ2max和两端相对扭转角
与原来的τ1max和
的比值为()。
A.τ2max:τ1max=1:2,
:
=1:4
B.τ2max:τ1max=1:4,
:
=1:8
C.τ2max:τ1max=1:8,
:
=1:16
D.τ2max:τ1max=1:4,
:
=1:16
![](https://assets.51tk.com/images/04f1aa66314972a9_img/c1061345ae8c2a39.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/72649dde92b4d7f0.jpg)
A.τ2max:τ1max=1:2,
![](https://assets.51tk.com/images/04f1aa66314972a9_img/7cf6b4351c5a9a1c.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/392bc59a83f4c01e.jpg)
B.τ2max:τ1max=1:4,
![](https://assets.51tk.com/images/04f1aa66314972a9_img/57a5443ab8672c3f.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/ad07a4661ab34def.jpg)
C.τ2max:τ1max=1:8,
![](https://assets.51tk.com/images/04f1aa66314972a9_img/4abb4e3c85627a77.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/4b98e1c88f83b2b3.jpg)
D.τ2max:τ1max=1:4,
![](https://assets.51tk.com/images/04f1aa66314972a9_img/78f76888335ffde2.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/c73bf350f7a2eb9e.jpg)
参考解析
解析:提示:τ2max=
τ1max
=
![](https://assets.51tk.com/images/04f1aa66314972a9_img/6e465ef1a1d78760.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/6a587a754687a409.jpg)
![](https://assets.51tk.com/images/04f1aa66314972a9_img/4064826c36e7618a.jpg)
相关考题:
已知圆截面杆扭转时,横截面上的最大剪应力为τmax,两端面间的相对扭转角为φ。若圆杆的直径增大一倍(即为原直径的两倍),则此时的最大剪应力τmax和相对扭 转角φ与原来的τmax和φ的比值为( )。A.τmax/τmax=1/2,φ/φ=1/4B.τmax/τmax=1/4,φ/φ=1/8C.τmax/τmax=1/8,φ/φ=1/8D.τmax/τmax=1/8,φ/φ=1/16
单选题(2005)受扭实心等直圆轴,当直径增大一倍时,其最大剪应力τ2max和两端相对扭转角φ2与原来的τ1max和φ1的比值为()。Aτ2max:τ1max=1:2,φ2:φ1=1:4Bτ2max:τ1max=1:4,φ2:φ1=1:8Cτ2max:τ1max=1:8,φ2:φ1=1:16Dτ2max:τ1max=1:4,φ2:φ1=1:16
单选题实心圆轴受扭,若将轴的直径减小一半时,则圆轴的扭转角是原来的多少倍,有四种答案:()A2倍B4倍C8倍D16倍