Homogenization analysis
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The linear buckling behavior of functionally graded toroidal shell segments with corrugated core under axial compression using the first-order shear deformation theory is presented in this paper. The homogeneous technique is applied for shear deformable corrugated core. Approximate analytical solutions are assumed to satisfy the simply supported boundary conditions and the adjacent equilibrium criterion is applied to obtain closed-form relations of buckling loads.
10p dathienlang1012 03-05-2024 1 0 Download
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This work focuses on the free vibration of the functionally graded porous (FGP) sandwich microplates using the isogeometric approach (IGA). The FGP sandwich plate comprises the homogeneous core and the FG porous face sheets. The material properties of the FGP face sheets are supposed to vary through the thickness direction according to the power-law function and modified rule of a mixture of the volume fraction with three different types of porosity distribution: homogeneous porous, X porous and V porous distributions.
11p dathienlang1012 03-05-2024 2 0 Download
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In the paper "Nonlinear static analysis of bidirectional functionally graded sandwich plates using a higher-order finite element formulation" the nonlinear static behaviors of bidirectional functionally graded sandwich (BFGSW) plates are investigated using a finite element procedure. The plates consist of three layers, a homogeneous core and two bidirectional functionally graded face sheets. A nonlinear finite element formulation in sense of the von Karman nonlinear strain-displacement relation is derived in the basis of a higher-order shear deformation theory.
10p dathienlang1012 03-05-2024 4 0 Download
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In the paper "Finite element analysis for the composite sandwich plate using the homogenization method", we propose a homogeneous model for the composite sandwich plate. Accordingly, the 3D plate model will be replaced by a 2D homogeneous panel. Analytical calculations were performed for both models. The proposed model is confirmed by comparing the results obtained with the 3D plate model. The findings of this research will help us continue to build and finalize a homogenous model for a variety of structures.
7p dathienlang1012 03-05-2024 1 0 Download
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An analytical approach of nonlinear buckling and postbuckling analysis of core-corrugated functionally graded carbon nanotubes reinforced composite (FG- CNTRC) cylindrical panels under axial compression is presented in the present study. A homogenization technique is applied for the corrugated core with thermal effects. The nonlinear stability equation system of panels is formulated by using the Donnell thin shell theory with the von Kármán geometrical nonlinearities.
9p dathienlang1012 03-05-2024 2 0 Download
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This paper studies dynamic behavior of an inclined sandwich beam with a homogeneous core and functionally graded carbon nanotube reinforced composite (FG-CNTRC) face sheets under a moving mass. The effective properties of the face sheets are estimated by the extended rule of mixture.
15p dianmotminh02 03-05-2024 3 2 Download
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In this work, the free vibration analysis of Timoshenko microbeams made of the Functionally Graded Material (FGM) on the Winkler–Paternak elastic foundation based on the Modified Coupled Stress Theory (MCST) is investigated. Material characteristics of the beam vary throughout the thickness according to the power distribution and are estimated though Mori–Tanaka, Hashin–Shtrikman and Voigt homogenization techniques.
13p dianmotminh02 03-05-2024 7 2 Download
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Continued part 1, part 2 of ebook "Reliability and statistics in geotechnical engineering" provides readers with content including: site characterization; classification and mapping; soil variability; spatial variability within homogeneous deposits; random field theory; spatial sampling; search theory; reliability analysis and error propagation;...
305p dieptieuung 19-07-2023 9 3 Download
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In this work, geometrically nonlinear behavior of sandwich composite beams reinforced by carbon nanotubes is studied, taking into account the influence of agglomeration of the carbon nanotubes (CNTs). The core of the sandwich beams is homogeneous while the two face sheets are made of CNT reinforced composite with the effective material properties being estimated by the Eshelby-Mori-Tanaka approach.
16p viwolverine 11-07-2023 5 2 Download
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This paper presents a novel formulation for the computational homogenization analysis of materials at the limit state. The polynomial interpolations are employed to impose the periodic boundary conditions for the fluctuating term of the displacement field when using arbitrary finite element meshes.
12p viwolverine 11-07-2023 6 2 Download
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This paper presents a computational homogenization shakedown analysis of periodic perforated materials with von Mises matrices. The plastic behaviors of the perforated materials under cyclic macroscopic loads are studied by means of kinematic shakedown theorem and computational homogenization method.
13p viwolverine 11-07-2023 2 2 Download
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In this paper, the authors proposed a higher-order shear deformation theory for buckling and free vibration analysis of functionally graded sandwich plates. Equations of motion derived from Hamilton’s principle are established basing on a refined hyperbolic distribution of transverse shear stress which satisfies the traction free boundary conditions.
8p vidoctorstrange 06-05-2023 9 2 Download
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Accurate classification of patients with a complex disease into subtypes has important implications for medicine and healthcare. Using more homogeneous disease subtypes in genetic association analysis will facilitate the detection of new genetic variants that are not detectible using the non-differentiated disease phenotype.
12p vinarcissa 21-03-2023 4 1 Download
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In meta-analyses of genetic association studies, ancestry and ethnicity are not accurately investigated. Ethnicity is usually classified using conventional race/ethnic categories or continental groupings even though they could introduce bias increasing heterogeneity between and within studies; thus decreasing the external validity of the results.
11p vinarcissa 21-03-2023 6 1 Download
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Advanced Algorithms Analysis and Design - Lecture 8: Recurrence relations. In this lecture we will cover the following: general homogenous recurrences; non-homogenous recurrence relations; characteristics of various type of non-homogenous recurrence relations; solution to various non-homogenous recurrence relations;...
36p andromedashun 26-05-2022 9 2 Download
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Advanced Algorithms Analysis and Design - Lecture 7: Recurrence relations. In this lecture we will cover the following: recursive mathematical models; solving recurrence relations; first order linear homogenous recurrence relations, with constant coefficients; second order linear homogenous recurrence relations, constant coefficients; general homogenous recurrences;...
40p andromedashun 26-05-2022 6 1 Download
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We describe a methodology for partitioning scRNA-seq datasets into metacells: disjoint and homogenous groups of profiles that could have been resampled from the same cell. Unlike clustering analysis, our algorithm specializes at obtaining granular as opposed to maximal groups.
19p vielonmusk 30-01-2022 12 0 Download
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Cell-to-cell variation and heterogeneity are fundamental and intrinsic characteristics of stem cell populations, but these differences are masked when bulk cells are used for omic analysis. Single-cell sequencing technologies serve as powerful tools to dissect cellular heterogeneity comprehensively and to identify distinct phenotypic cell types, even within a ‘homogeneous’ stem cell population.
12p viaristotle 29-01-2022 8 0 Download
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The scorpion venom consisting of a pair of gland connected to telson has great importance for their survival, assisting in feeding and self-defense. Scorpion venoms are a complex mixture of inorganic salts, free amino acids, heterocyclic components, peptides and proteins. The present study aimed to identify telson components of four scorpion species Leiurus quinquestriatus, Androctonus amoreuxi, Orthochirus innesi and Buthacus leptochelys.
13p dolomite36 30-12-2021 9 0 Download
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Our studies on the selective catalytic reduction of NO (SCR-deNO) properties of M/γ-Al2O3 (M = Mn, Co, Cu) nanocatalysts are presented. All catalysts were prepared by homogeneous deposition precipitation using urea as the precursor for the precipitating agent. The SCR activity followed the order Mn/γ-Al2O3 > Cu/γ-Al2O3 > Co/γ-Al2O3. The nanocatalysts were characterized with respect to their texture (N2-BET), particle size (TEM), reducibility (H2-TPR), and acidity (NH3-TPD).
10p langthannam 29-12-2021 9 0 Download