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Mechanical Engineering
To what degree does a hole in a tube make it weaker?
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[QUOTE="jrmichler, post: 6032611, member: 638574"] Short answer: Adding holes to a pipe will make it weaker. Possibly a little weaker, more likely a lot weaker. Longer answer: In order to find out how much weaker, you need to do separate stress calculations for bending and torsion. If the loads are time varying, or the pipe is turning, then you may need to perform fatigue calculations. You need all dimensions and loads, and the steel properties in the as hardened condition. You need to define your reliability and/or safety factors. Then you can start the calculations. This is a job that an experienced engineer can do in a couple of hours. It is beyond what is practical in this forum. And if the shaft breaking would cause safety issues, you definitely need an experienced engineer to perform a full analysis. [/QUOTE]
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To what degree does a hole in a tube make it weaker?
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