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Bows / Re: The best shape for a reflexed bow?
« Last post by willie on December 09, 2025, 03:28:31 pm »So more taper → more evenly distributed stresses and lighter limbs.......Was this with the same width width profile? A limb can be made stiffer, or for the sake of this discussion, less stressed, anywhere along the limb where the stresses are maxing out.
I tried my D/R model using a 0.010 taper (more taper)...... the maximum strain values were higher.
With less taper (0.006).....the maximum strain values were slightly higher.
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In VirtualBow, I get maximum speed and minimum strain when stresses are distributed as evenly as possible (within reasonable limits, of course).
In real life, we cannot “see” strain values, so it’s difficult to tiller perfectly, but we can learn a lot by using programs like VirtualBow.
visualing the stress curve with the program, is to me, its strongest feature.
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The question is that how do you optimize the tiller? What is the parameter which is altered? More bending towards the tips, or handle? Something else?
In theory (and in generally accepted widsom), bend towards the handle does the most for energy storage. So for me, it becomes where a designer would seek to place the highest stress on the curve, but also keep it as level as possible without the stress curve peaking too much, finally deciding where along the limb length to have the stress curve begin its downward slope towards the tip where stress and bend is zero.
Looking foreward to your presentation!
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Thank you for the sharing of so much knowledge.