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To what degree does a hole in a tube make it weaker?
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[QUOTE="Afiaki, post: 6034151, member: 648915"] I appreciate the replies, thank you both. My question omitted any specific details in case there was a rule about stress, relating to holes, that I was missing. The details of what I was asking it for weren't really relevant, because it was just hypothetical. I was looking at ways to make heavy trucks lighter, and I was thinking about a backbone (central tube) chassis for that. Ultimately I ended up resolving my own question anyway, which I probably should have figured out before asking, but anyway. There's a vehicle manufacturer (Tatra) which uses backbone chassis' for their vehicles, including heavy trucks. They run the driveline through the chassis, and every axle is driven, so thus there is double the holes in the tube as there are axles... and they are not small holes of course. The fact that there are backbone chassis' to start with answers my question, and furthermore, the dual C channel chassis rails that I was trying to improve upon are basically half-tubes that have hundreds of holes through them. So to what degree does a tube weaken with holes? Not significantly; there is no Achilles Heel like I was wondering about – it is going to be weaker of course, but by how much depends on the details. The amount to which it does is logical, however. Thanks! It seems like a great place to get answers. [/QUOTE]
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To what degree does a hole in a tube make it weaker?
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