Temat: isogrid - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Selected Methods of Obtaining Adequate Forms of Deformation of Supercritical Thin-Walled Flat Plates
Autorzy:: Kopecki, Tomasz
Tematy:: finite elements method
nonlinear analysis
advanced deformation
isogrid; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2024021.pdf Link otwiera się w nowym oknie
Opis:: The study includes considerations on the numerical methods of obtaining the correct forms of deformation of thin-walled plates subjected to pure shear, operating under conditions of critical loads. Selected methods were presented and subjected to comparative tests, allowing for the obtaining of a state of large deformations of a perfectly flat system, loaded in its plane. These methods are based on application various forms of initial imperfections into the system, either geometrically or physically. A new solution was proposed in this area, differing in its essence from most commonly used solutions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Basic Principles and Mechanical Considerations of Satellites: A Short Review
Autorzy:: Reda, Reham
Ahmed, Yasmeen
Magdy, Islam
Nabil, Hossam
Khamis, Mennatullah
Refaey, Ahmed
Eldabaa, Nada
Abo Elmagd, Manar
Abo Lila, Mohamed
Ergawy, Hady
Elgarf, Alhussein
Abed, Gerges
Tematy:: principles of satellites
primary structure
isogrid structure
honeycomb structure
mechanical load analysis
assembly
integration
testing; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Powiązania:: https://bibliotekanauki.pl/articles/36827035.pdf Link otwiera się w nowym oknie
Opis:: Satellites are used for navigation, communication, oceanography, astronomy, etc.. Satellites come in a diversity of sizes and forms. Depending on the satellite’s mission, different subsystems are used. These subsystems are installed inside a housing to protect them from the space environment. This housing, which is also known as the satellite primary structure or mechanical structure, is made of durable materials that can endure severe conditions during launch and in the orbit. The optimisation of satellite mass is crucial right now since satellites are losing mass every day to reduce the cost of manufacturing and launching. This review first introduces an overview of the satellite classifications and subsystems. Then, the different types of mechanical load analysis the satellite subjects itself to are demonstrated. The advanced approaches for promoting the performance of the mechanical structures of satellites are explored, with a spotlight on the effect of the optimisation parameters of isogrid and honeycomb sandwich structures on the mechanical performance of the satellite primary structure. The assembly, integration and testing (AIT) of the small satellite are briefly presented. Finally, the important potential designs to improve the mechanical performance of the satellite primary structure and the challenges of further research are summarised.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of the Post-Critical Deformation State of Curvilinear Integral Stiffening of a Thin-Walled Structure Subjected to Torsion
Autorzy:: Kopecki, Tomasz
Tematy:: isogrid
advanced deformation
finite elements method
nonlinear analysis
izokrata
zaawansowana deformacja
metoda elementów skończonych
analiza nieliniowa; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/102877.pdf Link otwiera się w nowym oknie
Opis:: The paper presents an innovative concept of integral stiffening of the thin-walled structures based on the use of curvilinear elements. The analyzed system in the form of a thin-walled spatial structure was subjected to a non-linear numerical analysis, aimed at comparing the properties of the proposed solution with those of the reference stiffening. A comparative analysis of deformation forms and ranges as well as effective stress distributions was conducted. The tests constituted a preliminary analysis, aimed at determining the usability of the solution, which is the basis of the research process supported by an appropriate experiment.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Buckling deformation of thin layer coverings of small curvatures used in aircraft construction
Autorzy:: Kopecki, Tomasz
Lis, Tomasz
Mazurek, Przemysław
Bakunowicz, Jerzy
Tematy:: buckling
isogrid
loss of stability
aircraft load-bearing structures
finite elements method
nonlinear numerical analysis
wyboczenie
utrata stabilności
konstrukcje nośne statków powietrznych
metoda elementów skończonych
nieliniowa analiza numeryczna; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/103189.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the results of experimental and numerical analysis in terms of the finite element method of plating components of aircraft load bearing structures. The subject matter of the study was composite panels with stiffeners in the form of a regular grid of oriented longitudinal elements in accordance with the directions of the principal stresses in the covering. The analysis was conducted in the buckling states of structural deformation which showed that structures with stiffeners exhibit much more favorable behavior in buckling deformation states than in laminar structures. This translates into stress distributions and their gradients, which are milder in forms of stiffened structures.
Dostawca treści:: Biblioteka Nauki

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