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- Title
Computational Simulation and Optimization of Functionally Graded Auxetic Structures Made From Inverted Tetrapods.
- Authors
Novak, Nejc; Vesenjak, Matej; Ren, Zoran
- Abstract
Auxetic cellular materials show great potential for improved properties in case of impact loading. Due to this potential, auxetic structures made from inverted tetrapods are extensively analyzed experimentally and computationally. The built samples are compressed in two orthogonal directions to determine their base mechanical properties and deformation mechanisms. The lattice computational model is developed and validated using the experimental results. A new shape optimization procedure to develop new auxetic structures with functionally graded geometry is proposed and tested in a case study. With introduction of the functionally graded geometry the response of the auxetic structure can be tailored to a particular loading condition, which is especially important in impact or ballistic performance of modern composite materials.
- Subjects
AUXETIC materials; DEFORMATIONS (Mechanics); MECHANICAL loads; FINITE element method; STRUCTURAL optimization
- Publication
Physica Status Solidi (B), 2017, Vol 254, Issue 12, pn/a
- ISSN
0370-1972
- Publication type
Article
- DOI
10.1002/pssb.201600753