Dynamic analysis of optimized two-phase auxetic structure

• Autorzy: Idczak E. , Stręk T.
• Języki publikacji: EN

Abstrakty

EN

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).

Słowa kluczowe

EN

negative Poisson's ratio; auxetics; eigenfrequency; topology optimization; dynamic analysis

PL

ujemny współczynnik Poissona; materiały auksetyczne; częstotliwość drgań własnych; optymalizacja topologiczna; analiza dynamiczna

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2017
• Tom: Vol. 28
• Strony: art. no. 2017003
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr.

Twórcy

autor

Idczak E.

• Institute of Applied Mechanics, Poznan University of Technology, ul. Jana Pawla II 24, 60-965 Poznan, Poland

autor

Stręk T.

• Institute of Applied Mechanics, Poznan University of Technology, ul. Jana Pawla II 24, 60-965 Poznan, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).