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Shell thickness
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The influence of porosity distribution pattern on the nonlinear buckling and postbuckling behavior of porous cylindrical shells subjected to axial compression are investigated by the analytical approach in this paper. The material properties are assumed to vary through the thickness of the shell. There are three porosity distribution pattern types are considered.
10p
dathienlang1012
03-05-2024
2
0
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A new continuous element (CE) formulation has been presented in this paper for the vibration analysis of FGM joined conical-cylindrical shells surrounded by Pasternak elastic foundations. The differential equations of FGM conical shells are used including FGM cylindrical shells as a special case. Governing equations are obtained using thick shell theory of Reissner, taking into account the shear deflection effects.
10p
dathienlang1012
03-05-2024
3
0
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Core/shell hetero-nanostructures are promising materials for fabricating optoelectronic devices, photodetectors, bioimaging, and biosensing. The CdSe/CdS core/shell nanocrystals (NCs) were synthesized in a wet chemical reaction. The shell thickness was modified by varying reaction times.
6p
vispiderman
15-06-2023
3
2
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Chitosan-sheath and -chitin-core nanowhiskers (CsNWs) have been successfully generated by surface deacetylation of chitin nanowhiskers (CtNWs) in the never-dried state. Acid hydrolysis (3N HCl, 30 mL/g, 104 ◦C) of pure chitin derived from crab shell yielded 65% 4–10 nm thick, 16 nm wide and 214 nm long chitin whiskers (CtNWs) that were 86% crystalline and 81% acetylated.
9p
vihermione
06-01-2023
16
2
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Orthotropic composite pressure vessels are designed based on considering the role of a matrix in the force balance of the structure and its leakage due to matrix failure. To be more specific, the stress and strain states of the shell are considered simultaneously in both longitudinal and transverse directions of the fiber.
8p
viwmotors
02-12-2022
8
3
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Aluminum-based bimetallic core–shell nanoparticles have shown promising applications in civil and defense industries. This study addresses the thermal stability of aluminum–palladium (Al–Pd) core/shell nanoparticles with a varying shell thickness of 5, 6, and 7 A˚ , respectively. The classic molecular dynamics (MD) simulations are performed in order to investigate the effects of the shell thickness on the ignition mechanism and subsequent energetic processes of these nanoparticles.
12p
runordie3
27-06-2022
17
3
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North of İstanbul, the thick Upper Cretaceous volcanic and volcanoclastic sequence of the Yemişliçay Group is nonconformably overlain by the neritic clastic and carbonate sequence of the Zekeriyaköy Formation. This unit, either placed within the volcanic sequence or interpreted to overlie it, was studied near Zekeriyaköy for its larger foraminifera, previously recurrently referred to as the Maastrichtian. The basal epiclastic sandstone beds of the Zekeriyaköy Formation immediately above the volcanic sequence contain Praesiderolites dordoniensis and rare rudist shells.
21p
tanmocphong
29-01-2022
13
1
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Silver nanoparticles (AgNPs) with their unique properties represent great promise in biological applications. However, the high toxicity of AgNPs still remains a major bottleneck and hinders their basic usage. In the present study, to improve the cytotoxicity of AgNPs, a thin layer of polydopamine (PDOP) was proposed as shell material. For this, the as-prepared citrate-stabilized AgNPs were dispersed in dopamine solution under alkaline conditions. The thickness of the PDOP layer could be manipulated simply by tuning the polymerization time.
8p
dolomite36
30-12-2021
6
0
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This research presents a continuous element model for solving vibration problems of FG stepped truncated conical shells having various material properties and surrounded by Pasternak foundations. Based on the First Order Shear Deformation Theory (FSDT) and the equations of the FGM conical shells, the dynamic stiffness matrix is obtained for each segment of the shell having constant thickness.
20p
nguaconbaynhay11
07-04-2021
16
1
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The present paper presents the evaluation of three-dimensional (3D) stress distributions of shell structures in the large displacement and rotation fields. The proposed geometrical nonlinear model is based on a combination of the Carrera Unified Formulation (CUF) and the Finite Element Method (FEM). Besides, a Newton-Raphson linearization scheme is adopted to compute the geometrical nonlinear equations, which are constrained using the arc-length path-following method.
16p
trinhthamhodang9
10-12-2020
15
2
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This paper derives a semi-analytical solution to determine displacements and stresses in a thick cylindrical shell with variable thickness under uniform pressure based on disk form multilayers. The proposed study partitions the thick cylinder into disk-layer parts based on their thickness of the cylinder.
14p
tohitohi
19-05-2020
18
0
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Genetic variability and correlation analysis of vegetative, floral, nut and yield characters were studied with 11 tall and 3 dwarfs which include 6 indigenous and 8 exotic coconut genotypes from diverse geographic origin. Analysis revealed a high degree of variability for most of the character studied.
15p
trinhthamhodang5
16-05-2020
15
1
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The present investigation was aimed to evaluate the physical properties of exotic and indigenous breed eggs. The collected eggs were analyzed for external and internal qualities. A significant difference (tcal>ttab) was recorded in quality parameters like weight (55.82 and 43.66 g), surface area (67.35 and 57.29 cm2 ), volume (50.96 and 39.86 cm3 ), albumen width (6.43 and 5.89 mm), albumen height (7.56 and 5.32 mm), yolk height (16.55 and 14.76 mm), albumen weight (34.17 and 24.46 g), yolk weight (15.64 and 13.95 g), albumen ratio (61.23 and 56.02), yolk diameter (4.29 and 3.
8p
caygaocaolon3
27-02-2020
15
0
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The present study was aimed to explore embryonic mortality pattern of fertile eggs of Vanaraja chicken reared on deep litter system. The study was conducted in the year 2016 at Hatchery Unit of West Bengal University of Animal and Fishery Sciences, Mohanpur campus (Nadia District). Birds were divided in 3 age groups as 27 to 40, 41 to 72 and 73 to 92 weeks. Eggs were grouped into three categories; 38 to 41.3, 41.6 to 54.8 and> 55g.
8p
kethamoi2
15-12-2019
30
2
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Genetic variability, heritability, genetic advance and genetic advance as a per cent over mean for twenty characters were assessed by field evaluation (part of survey) of two thirty one tamarind genotypes in six districts (viz, Belagavi, Dharwad, Gadag, Bellary, Chitradurga and Gulbarga) with different location during 2018. High degree of variation was observed for all characters. In all cases, phenotypic variances were higher than the genotypic variance.
7p
kequaidan2
13-12-2019
18
1
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The present investigation entitled “Response of Integrated Nutrient Management on different physical characters of bael (Aegle marmelos Correa) cv. Narendra Bael-9” was carried out at Main Experiment Station, Horticulture, N. D. University of Agriculture and Technology, Kumarganj Faizabad (U.P.) 224 229 under sodic soil condition during the years 2014-15 and2015-16 to access the response of organic manure, inorganic fertilizer and Bio-fertilizers on different physical characters of bael fruit.
9p
cothumenhmong1
11-12-2019
14
1
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Thesis studying deformation stress state of two-layer curved reinforced concrete sloped shell roof under the impact of uniformly distributed load in the period before concrete appeared cracks, in case the shell has constant thickness.
27p
bibianh
25-09-2019
28
2
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This study was carried out to determine important nut and kernel quality characteristics and variation in nut and kernel weight and kernel percentage in orchards of Palaz hazelnut cultivar in Ordu and nearby villages. Samples were selected at random from 36 orchards.
4p
aquaman27
15-01-2019
19
1
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This study was carried out on Palaz and Sivri hazelnut cultivars grown in central Ordu and the surrounding area. The interrelationships among husk length, nut length, nut width, nut height nut weight, shell thickness, kernel length, kernel width, kernel height, kernel weight and percent kernel were determined using path analysis.
5p
aquaman27
15-01-2019
12
1
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In this study, Alder (Alnus glutinosa subsp.Barbata) wood was used for particleboard manufacturing. The purpose of this study was to determine the effects of particle moisture content, shelling ratio and the addition of wood dust on the mechanical properties (static bending, modulus of elasticity and internal bond) and physical property (thickness swelling) of particleboard.
6p
masterbarista
14-01-2019
30
1
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