Premium
Computational analysis of sandwich‐structured composites with an auxetic phase
Author(s) -
Strek Tomasz,
Jopek Hubert,
Maruszewski Bogdan T.,
Nienartowicz Maria
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201384250
Subject(s) - materials science , composite material , composite number , isotropy , sandwich structured composite , auxetics , strain energy , phase (matter) , core (optical fiber) , layer (electronics) , structural engineering , finite element method , chemistry , physics , organic chemistry , quantum mechanics , engineering
A sandwich‐structured composite is a special class of composite materials that is fabricated by attaching two thin but stiff layers to a lightweight but thick core. Composites analyzed in this paper consist of two different materials: auxetic and structural steel. The optimization criterion is minimum compliance for the load case where the frame's top boundary is downward loaded. Outer layers are made of steel while the middle layer is two‐phase solid material composite. Only the middle layer is optimized by means of minimization of the objective function defined as the internal strain energy. In the first part of this paper we study the application of the solid isotropic material with penalization (SIMP) model to find the optimal distribution of a given amount of materials in sandwich‐structured composite. In the second part we propose a multilayered composite structure in which internal layers surfaces are wavy. In both cases the total energy strain is analyzed.