Re:
"Incorrect. This is a misinterpretation of compound beam theory. In a multi-material beam in flexture, putting the stiffer materials on the outer regions and the less stiff materials (generally centrally) at the neutral plane will result in the stiffest beam, given those materials; but, if you replaced the central less-stiff material with the same amount of high-stiffness material, the beam would be even stiffer. Or, taking the reverse direction, imagine a uniform-material beam, with a certain stiffness; replacing any part of it with less-stiff material will result in a less stiff beam. The reduction in stiffness will be least if you put the less-stiff material surrounding a central neutral plane, but it will still have reduced stiffness."
Could be- I'll have to look into that further, I'm certain you're right about at least most of it- so much for plywood...
Great explanation, tho.
"Incorrect. This is a misinterpretation of compound beam theory. In a multi-material beam in flexture, putting the stiffer materials on the outer regions and the less stiff materials (generally centrally) at the neutral plane will result in the stiffest beam, given those materials; but, if you replaced the central less-stiff material with the same amount of high-stiffness material, the beam would be even stiffer. Or, taking the reverse direction, imagine a uniform-material beam, with a certain stiffness; replacing any part of it with less-stiff material will result in a less stiff beam. The reduction in stiffness will be least if you put the less-stiff material surrounding a central neutral plane, but it will still have reduced stiffness."
Could be- I'll have to look into that further, I'm certain you're right about at least most of it- so much for plywood...
Great explanation, tho.