Journal
JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
Volume 11, Issue 3, Pages 217-229Publisher
MATHEMATICAL SCIENCE PUBL
DOI: 10.2140/jomms.2016.11.217
Keywords
Cosserat; microstretch; void theory; generalized continuum
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Funding
- National Science Foundation [CMMI-1361832]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1361832] Funding Source: National Science Foundation
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The physical meaning of Cosserat, void, and microstretch elastic constants is analyzed and interpreted. Various torsion experiment designs provide a clear path to extract Cosserat elastic constants independently of any dilatation gradient sensitivity the material may have. For void elasticity (with sensitivity to dilatation gradients) there is no known quasistatic modality to demonstrate phenomena or extract elastic constants independently of any sensitivity to rotation gradients. Wave methods may be appropriate if there is minimal viscoelastic dispersion. Microstretch elasticity, which includes sensitivity to gradients of rotation and of dilatation could account for bending effects larger than those of Cosserat elasticity.
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