Temat: topology optimization - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Finite element analysis of dynamic properties of thermally optimal two-phase composite structure
Autorzy:: Nienartowicz, M.
Stręk, T.
Powiązania:: https://bibliotekanauki.pl/articles/128202.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: topology optimization
SIMP model
SNOPT
internal energy
optymalizacja topologii
model SIMP
energia wewnętrzna
Opis:: This paper presents modelling and a FEM analysis of dynamic properties of a thermally optimal two-phase composite structure. Simulations were provided for 2D models. At the first step, topology optimization was performed, where an internal energy was minimized. At the second step, analysis of dynamic properties was executed. Calculations allowed to determine eigenfrequencies and the mode shape of the structure. Solid isotropic material with penalization (SIMP) model was used to find the optimal solution. The optimization algorithm was based on SNOPT method and Finite Element Method.
Źródło:: Vibrations in Physical Systems; 2014, 26; 203-210
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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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

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