shaft strength
shaft strength
(OP)
Hi all,
I have a hollow shaft of 2" outside dia to 1.25" inside dia, about 1.5 ft in length.I also have a notch going around the outside periphery of the shaft. The shaft also has 2 holes drilled tranversely through the shaft
The shaft will be rotating and will have torsion and probably bending load.
I calculated that the strength of this hollow shaft will reduce by about 15% compared to a solid 2" shaft.How can I further calculate the reduction in strength taking into consideration the drilled tranverse holes & the notch.Thanks in advance.
john
I have a hollow shaft of 2" outside dia to 1.25" inside dia, about 1.5 ft in length.I also have a notch going around the outside periphery of the shaft. The shaft also has 2 holes drilled tranversely through the shaft
The shaft will be rotating and will have torsion and probably bending load.
I calculated that the strength of this hollow shaft will reduce by about 15% compared to a solid 2" shaft.How can I further calculate the reduction in strength taking into consideration the drilled tranverse holes & the notch.Thanks in advance.
john





RE: shaft strength
Regards
Dave
RE: shaft strength
h
RE: shaft strength
You can assume such factors contribute minor stress concentrations to the system, since drilled material removes only small amounts of mass. Then you can simply model the hollow shaft WITH the notch, the notch would add to stress in a major way.
Again, probably FEA would be the best on complicated geometry.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: shaft strength
ZCP
www.phoenix-engineer.com
RE: shaft strength
Brandon B. Arthurs, P.E.
RE: shaft strength