I make wooden archery bows. I have found data showing most hard woods to be three or more times stronger in tension than in compression.But I have not found information about how much woods stretch in tension before rupturing.
I am under the impression that most of the elasticity of wood in bending is the result of elasticity in the compression side of the beam, or in my case, bow limb.
I have experimented with narrowing the tension side of bow limbs to one half the width of the compression side. This resulted in a lighter limb that returns faster during the launching of an arrow.But, I have no information indicating whether this narrowing may also cause the tension side to elongate more than if it were the same width as the compression side.
Does anyone have any insight into the elongation question, or can anyone point me to an online reference for such data?
If it matters, I use hickory, black locust, winged elm and Osage orange for my bows--singly, not in combination.
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