Flexure of power law governed functionally graded plates using ABAQUS UMAT

Shiyekar, Sandeep; Lavate, P. S.

doi:10.1016/j.ast.2015.06.021

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…To model the varying Young's modulus of the functionally graded platelet, a user subroutine UMAT (User MATerial) is used in ABAQUS 6.13 software [19]. A FORTRAN code is generated to define the functional gradation of the platelet and is used while defining the platelet material properties [23] using the UMAT subroutine [29,31]. For comparison, another composite model with uniformly graded platelet and same boundary conditions is also made.…”

Section: Results-fe Analysismentioning

confidence: 99%

Bio-inspired composites with functionally graded platelets exhibit enhanced stiffness

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2017

Bioinspir. Biomim.

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Unidirectional composites inspired from biological materials such as nacre are composed of stiff platelets arranged in a staggered manner within a soft matrix. Elaborate analyses have been conducted on the aforementioned composites and they are found to have excellent mechanical properties like stiffness, strength and fracture toughness. The superior properties exhibited by these composites have been proved to be the result of its unique structure. An emerging development in the field of composite structures is functionally graded composites, whose properties vary spatially and possess enhanced thermo-mechanical properties. In this paper, the platelets are functionally graded with its Young's modulus varying parabolically along the length. Two different models-namely, tension shear chain model and minimisation of complementary energy model have been employed to obtain the stiffness of the overall composite analytically. The effect of various parameters that define the composite model such as overlapping length between any two neighbouring platelets, different gradation parameters and platelet aspect ratio on the overall mechanical properties have been studied. Composites with functionally graded platelets are found to possess enhanced stiffness (upto [Formula: see text] higher) for certain values of these parameters. The obtained solutions have been validated using finite element analysis. Bio-inspired composites with functionally graded platelets can be engineered for structural applications, such as in automobile, aerospace and aircraft industries, where stiffness plays a crucial role.

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Section: Results-fe Analysismentioning

confidence: 99%

Bio-inspired composites with functionally graded platelets exhibit enhanced stiffness

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2017

Bioinspir. Biomim.

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“…Huang and Han [7] studied the non-linear buckling of torsion-loaded functionally graded cylindrical shells in thermal environment based on nonlinear large deflection theory of cylindrical shells. Shiyekar and Lavate [8] presented analytical model based on Reddy's TOT and modelling of FG material is done by using FEM computational tools ABAQUS [9].…”

Section: Introductionmentioning

confidence: 99%

Static Stress Analysis of Functionally Graded Cylindrical Stiffened Shells

Shiyekar

Awari²

2022

ASPS Conf. Proc.

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In this paper, a study on bending performance of functionally graded (FGM) cylindrical shells under transverse mechanical load is presented. Computational and analytical tools are used to study the behavior of FGM cylindrical shells under bending. Analytical modeling is based on first order shear deformation theory (FOST) and a finite element computational tool ABAQUS is used to model the FGM cylindrical shell. Material properties are estimated by power law index. Results from computational tools for isotropic and FGM cylindrical shells with various boundary and loading conditions are validated with literature and present FOST. Stiffened FG cylindrical shells with cutouts are analyzed. The FGM circular cylindrical shells subjected to an internal pressure with various arrangements of stiffeners are also analyzed and von – Mises stresses are also studied.

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“…Such approach for implementation of varying material properties has been reported for ABAQUS' 2-D plane strain elements in [49][50][51], where the strain-stress state of FGM pavement and the thermo-mechanical behaviour of FGM plate have been analysed, respectively. Also, this modelling technique has been extended on 2-D plate/shell and 3-D models of FGM plates in [52,53], respectively, however only the static bending analysis has been simulated there.…”

Section: Introductionmentioning

confidence: 99%

Free vibrations and static analysis of functionally graded sandwich plates with three-dimensional finite elements

Burlayenko

2019

Meccanica

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A three-dimensional modelling of free vibrations and static response of functionally graded material (FGM) sandwich plates is presented. Natural frequencies and associated mode shapes as well as displacements and stresses are determined by using the finite element method within the ABAQUS TM code. The three-dimensional (3-D) brick graded finite element is programmed and incorporated into the code via the user-defined material subroutine UMAT. The results of modal and static analyses are demonstrated for square metal-ceramic functionally graded simply supported plates with a power-law through-the-thickness variation of the volume fraction of the ceramic constituent. The through-the-thickness distribution of effective material properties at a point are defined based on the Mori-Tanaka scheme. First, exact values of displacements, stresses and natural frequencies available for FGM sandwich plates in the literature are used to verify the performance and estimate the accuracy of the developed 3-D graded finite element. Then, parametric studies are carried out for the frequency analysis by varying the volume fraction profile and value of the ceramic volume fraction.

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Flexure of power law governed functionally graded plates using ABAQUS UMAT

Cited by 8 publications

References 47 publications

Bio-inspired composites with functionally graded platelets exhibit enhanced stiffness

Bio-inspired composites with functionally graded platelets exhibit enhanced stiffness

Static Stress Analysis of Functionally Graded Cylindrical Stiffened Shells

Free vibrations and static analysis of functionally graded sandwich plates with three-dimensional finite elements

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