On the mechanical modeling of the extreme softening/stiffening response of axially loaded tensegrity prisms
| Autor: | Ada Amendola, Fernando Fraternali, Gerardo Carpentieri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Tensegrity prisms FOS: Physical sciences Tensegrity Composite material Softening Elastic Softening Condensed Matter - Materials Science business.industry Mechanical Engineering Nonlinear metamaterials Metamaterial Materials Science (cond-mat.mtrl-sci) Structural engineering Condensed Matter Physics Aspect ratio (image) Stiffening Periodic lattices Buckling Mechanics of Materials Geometric nonlinearities Elastic stiffening business Material properties Axial symmetry |
| Popis: | We study the geometrically nonlinear behavior of uniformly compressed tensegrity prisms through fully elastic and rigid-elastic models. The given models predict a variety of mechanical behaviors in the regime of large displacements, including an extreme stiffening-type response, already known in the literature, and a newly discovered, extreme softening behavior. The latter may lead to a snap buckling event producing an axial collapse of the structure. The switching from one mechanical regime to another depends on the aspect ratio of the structure, the magnitude of the applied prestress, and the material properties of the constituent elements. We discuss potential mechanical and acoustic applications of such behaviors, which are related to the design and manufacture of tensegrity lattices and innovative metamaterials. |
| Databáze: | OpenAIRE |
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