作者kindyoyotv (kindyoyotv)
看板Grad-ProbAsk
标题[理工] 机械-机械设计
时间Wed Jun 17 17:43:24 2009
A steel shaft is subjected to a completely reversed bending moment of 680N m.
A transition section at one end contains a fillet with a 2.5mm radius.The
steel has a tensile strength of 690 MPa,and the fatique limit is 310 MPa
.Kt for the fillet is about 2 and the dynamic factor of safety is 2.5
What is the minimum allowable diameter of the shaft?
这个题目我想很久 没有方向 请各位大大帮解
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