Originally Posted by
aland2
I think you may find "modulues" is actually spelt "modulus". And how you can present the three attributes of wall thickness, tubing diameter and butted section length under the heading of geometry is beyond science.
Ah, but you missed my mispelling of flex (see above).
Elastic modulus (thank you so kindly for pointing out the mispelling, which I often do when trying to peck out a reply on my phone rather than wait for a proper keyboard to reply) is a material property, whilst wall thickness, tubing diameter, and butted section length are properly described as variations of geometry, which are material independent.
It may be that it's been some time since my university training in mechanical engineering, but I do remember a bit of it now and then.