- Tytuł:
- Dynamic analysis of optimized two-phase auxetic structure
- Autorzy:
-
Idczak, E.
Stręk, T. - Powiązania:
- https://bibliotekanauki.pl/articles/127856.pdf
- Data publikacji:
- 2017
- Wydawca:
- Politechnika Poznańska. Instytut Mechaniki Stosowanej
- Tematy:
-
negative Poisson's ratio
auxetics
eigenfrequency
topology optimization
dynamic analysis
ujemny współczynnik Poissona
auksetyki
częstotliwość drgań własnych
optymalizacja topologiczna
analiza dynamiczna - Opis:
- This paper presents a dynamic analysis of earlier optimized auxetic structure. This optimization based on the distribution of two materials in such way to obtain a minimal value of Poisson’s ratio (PR), which indicates the auxetic properties. The initial optimized shape was so-called star structure, which if is made from one material has the PR close to 0.188. After optimization with the goal function of PR-minimization, the obtained value was equal to -9.5043. Then the eigenfrequencies for the optimized structure were investigated. The calculations were carried out by means of Finite Element Method (FEM). For optimization of the value of Poisson’s ratio was used algorithm MMA (Method of Moving Asymptotes). The computing of single material properties (PR, Young’s modulus, density) for the whole shape was made by means of SIMP method (Solid Isotropic Method with Penalization).
- Źródło:
-
Vibrations in Physical Systems; 2017, 28; 1-12
0860-6897 - Pojawia się w:
- Vibrations in Physical Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł