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عنوان فارسی مقاله:

تئوری پوسته شبه غشا مواد ناهمسانگرد هیبریدی


عنوان انگلیسی مقاله:

Pseudo-membrane shell theory of hybrid anisotropic materials


سال انتشار : 2016



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مقدمه انگلیسی مقاله:

1. Introduction

Shell theories used for pressure vessel design and manufacturing technology are becoming more important recently as the outer space exploration being more active. The pressure vessel ranges from deep water submarines, space vehicles, to the dome type human residences in the Moon or Mars. The membrane theory of shell is simple and been existing for generations since Trusdell and Goldenveiser have theoretically formulated as shown in the Refs. [7,8]. The mechanics of composites are complicated compared to the ordinary conventional materials such as steel and other metallic brands but composites possess such characteristics as high strength/density and modulus/density ratios, which will allow flight vehicles more efficient and increased distance. The filaments embedded in the matrix materials of composites give additional stiffness and tensile strength. They can be arranged arbitrarily so as to make a structure more resistant to loadings. As the mechanical properties of composites vary depending on the direction of the fiber arrangement, it is necessary to analyze them by use of an anisotropic theory. Also the current design codes including ASME, API and ACI, Refs. [15–18], are all based on membrane theory for isotropic materials. Pressure vessels of composite materials are, in general, constructed of thin layers of different thickness with different material properties. The properties of anisotropic materials are represented by different elastic coefficients and different cross-ply angles. The cross-ply angle, c, is the angle between major elastic axis of the material and reference axis (Figs. 1 and 2). The variation in properties in the direction of the thickness implies non-homogeneity of the material and composite structures must thus be analyzed according to theories which allow for non-homogeneous anisotropic material behavior. Our task is to formulate a theory for a shell of composite materials which are non-homogeneous and anisotropic materials.



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کلمات کلیدی:

Hybrid Anisotropic Materials for Wind Power Turbine Blades https://books.google.com/books?isbn=1439868921 Yosif Golfman - 2016 - ‎Science A.generalized.theory.of.strength.for.anisotropic. materials..Journal of Composites Materials.5. . 18..Wu,.E..M..1974..Phenomenological.anisotropic.failure.criteria. Hybrid Anisotropic Materials for Structural Aviation Parts https://books.google.com/books?isbn=1439836817 Yosif Golfman - 2016 - ‎Technology & Engineering In Multiscale Modeling and Simulation of Composite Materials and Structures, ed. Y. Kwon ... A general theory of strength for anisotropic materials. Journal of ... Toward Anisotropic Hybrid Materials: Directional Crystallization of ... pubs.acs.org/doi/abs/10.1021/acsnano.5b03660 by T Rudolph - ‎2015 - ‎Cited by 9 - ‎Related articles Sep 5, 2015 - We present the design and synthesis of a linear ABC triblock terpolymer for the bottom-up synthesis of anisotropic organic/inorganic hybrid ... Hybrid Anisotropic Materials for Structural Aviation Parts - Yosif ... books.google.com › Technology & Engineering › Materials Science › General Apr 19, 2016 - Hybrid Anisotropic Materials for Structural Aviation Parts ... reader establish a solid understanding of anisotropic properties, theory of laminates, ... [PDF]Anisotropic mechanical properties of polymorphic hybrid inorganic ... www.eng.ox.ac.uk/tan/pdf-publications/jct_ActaMater_2009.pdf by JC Tan - ‎2009 - ‎Cited by 60 - ‎Related articles May 7, 2009 - Hybrid inorganic–organic framework materials have recently developed into an important new class of solid-state materials. Their .... theory predictions [11,12]. ... of anisotropic materials, such as single crystals [14–18] and.