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Foam Structures with a Negative Poisson's Ratio
- R. Lakes
- 27 February 1987
A novel foam structure is presented, which exhibits a negative Poisson's ratio. Such a material expands laterally when stretched, in contrast to ordinary materials.
Properties of a chiral honeycomb with a poisson's ratio of — 1
Poisson's ratio and modern materials
On the bicentenary of the publication of Poisson's Traité de Mécanique, the continuing relevance of Poissons's ratio in the understanding of the mechanical characteristics of modern materials is reviewed.
Materials with structural hierarchy
- R. Lakes
- Materials ScienceNature
- 11 February 1993
Understanding the effects of hierarchical structure can guide the synthesis of new materials with physical properties that are tailored for specific applications, as well as determining the bulk material properties.
Nonlinear Ligament Viscoelasticity
- P. Provenzano, R. Lakes, Thomas Keenan, R. Vanderby
- BiologyAnnals of Biomedical Engineering
- 1 October 2001
Non-linear viscoelasticity of ligament requires a description more general than the separable quasilinear viscoELasticity (QLV) formulation commonly used, and results from rat MCLs consistently show a nonlinear behavior in which the rate of creep is dependent upon stress level and the rates of relaxation are dependent upon strain level.
Size effects due to Cosserat elasticity and surface damage in closed-cell polymethacrylimide foam
This article describes the experimental investigation of Cosserat (or micropolar) elasticity and surface damage effects in closed-cell polymethacrylimide foams of different densities. The method of…
Subfailure damage in ligament: a structural and cellular evaluation.
- P. Provenzano, D. Heisey, Kei Hayashi, R. Lakes, R. Vanderby
- Biology, EngineeringJournal of applied physiology
Structural and cellular damage in ligaments was represented and compared as functions of subfailure MCL strains and regions containing necrotic cells were used to characterize cellular damage after a single stretch.
EXPERIMENTAL METHODS FOR STUDY OF COSSERAT ELASTIC SOLIDS AND OTHER GENERALIZED ELASTIC CONTINUA
- R. Lakes
The behavior of solids can be represented by a variety of continuum theories. For example, Cosserat elasticity allows the points in the continuum to rotate as well as translate, and the continuum…