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RE: Shear Modulus[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Shear Modulus
- From: "Lutz, James" <James.Lutz(--nospam--at)earthtech.com>
- Date: Wed, 31 Aug 2005 13:37:21 -0700
Fintel's "Handbook of Concrete Engineering" recommends you use the formula G = E/2(1-v), where E is the elastic modulus and v is Poisson's ratio, usually between .10 and .20. Thee doesn't seem to be any clear relationship between Poisson's ratio and other parameters, but you could do tests on it if you really needed to know. Roark's tables suggests you use higher values of Poisson's ratio with higher E. I would probably just use .15 and call it a day. That results in G closer to 0.6E for concrete.
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