Large deformation analysis of laminated shells by ftnife element method

Chang, Tienchong; Sawamiphakdi, Krich

doi:10.1016/0045-7949(81)90141-3

Cited by 79 publications

(18 citation statements)

References 24 publications

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“…The general shell element, known as rhe degenerate shell element, was originally introduced by Ahmad, Irons and Z i e n k i e w i c~~~ for the linear analysis of moderately thick and thin shells and has been applied to the non-linear analysis of plates and shells by Ramm,45 K r a k e l a x~d ,~~ Chang and Sawamiphakdi, 16 Bathe and Bol~urichi,~' Chao and Reddy" and Liao and Reddy,". *' among others.…”

Section: Continuum-based Shell Modelmentioning

confidence: 99%

On refined computational models of composite laminates

Reddy

1989

Numerical Meth Engineering

260

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SUMMARYFinite element models of the continuumsbased theories and two-dimensional plate/shell theories used in the analysis of composite laminates are reviewed. The classical and shear deformation theories up to the thirdorder are presented in a single theory. Results of linear and non-linear bending, natural vibration and stability of composite laminates are presented for various boundary.conditbns and lamination schemes. Computational modelling issues related to composite laminates, such as locking, symmetry considerations, boundary conditions, and geometric non-linearity effects on displacements, buckling loads and frequencies are discussed. It is shown that the use of quarter plate models can introduce significant errors into the solution of certain laminates, the non-linear effects are important even at small ratio of the transverse deflection to the thickness of antisymmetric laminates with pinned edges, and that the conventional eigenvalue approach for the determination of buckling loads of composite laminates can be overly conservative. I . INTRODUCTIONIncreased utilization of composite materials in a variety of structures, including space and underwater vehicles, autotnotive parts, electronic and medicai devices, and sports equipment, has led to increased research activity in the mechanical characterization, structural modelling, and failure and damage assessment of composite materials. While composite materials offer many desirable structural properties over conventional materials, they also present challenging technical problems in the understanding of their structural behaviour, manufacturing, and in the damage and failure modes developed during their service:The subject of composite materials is an interdisciplinary area where chemists, materials scientists, chemical 'engineers, mechanical engineers, structural engineers and manufacturing engineers contribute to the overall product. From computational mechanics considerations, the study of composite materials involves modelling of fabrication processes (heat and mass transfer, and fluid flow) and structural response including micromechanics aspects, inelasticity and damage.Laminated composites consist of two or more different composite materials that are bonded together to achieve the best properties of the constituent layers. Most composite laminates are made of layers of the same orthotropic material, with the material co-ordinates of each layer oriented differently with respect to the laniinate co-ordinates.

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Section: Continuum-based Shell Modelmentioning

confidence: 99%

On refined computational models of composite laminates

Reddy

1989

Numerical Meth Engineering

260

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“…(2) and (3) respectively. The theory used in the present work refers to the previous studies [8,10]. However, the fundamental concept is here again illustrated for understanding the present research.…”

Section: Merits Of a J-shaped Steel Hysteresis Dampermentioning

confidence: 92%

Simulation of the cyclic behavior of J-shaped steel hysteresis devices and study on the efficiency for reducing earthquake responses of space structures

Kato¹,

Kim²,

Nakazawa³

et al. 2005

Journal of Constructional Steel Research

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“…In the conventional degenerated shell element formulations of nonlinear analysis for laminated structures (Chang and Swawamiphakdi, 1981), the linear and nonlinear strain incremental stiffness matrices and the vector of nodal point forces equivalent to the element stresses are given by…”

Section: Explicit Through-thickness Integration Schemementioning

confidence: 99%

“…The degenerated shell element for laminated composite structures was developed by Panda and Natarajan (1981) and Chang and Swawamiphakdi (1981) for linear and nonlinear problems, respectively. In the conventional degenerated shell element formulations of nonlinear analysis for laminated structures (Chang and Swawamiphakdi, 1981), the linear and nonlinear strain incremental stiffness matrices and the vector of nodal point forces equivalent to the element stresses are given by…”

Section: Explicit Through-thickness Integration Schemementioning

confidence: 99%

Reliability assessment of post-buckling compressive strength of laminated composite plates and stiffened panels under axial compression

Chen

Soares

2007

International Journal of Solids and Structures

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A method for reliability assessment of the post-buckling compressive strength of laminated composite plates and stiffened panels under axial compression is presented in the paper. The prediction of the post-buckling compressive strength is performed by a progressive failure analysis which was developed based on a progressive stiffness degradation model and a nonlinear finite element analysis with a new explicit through-thickness integration scheme. A method coupled with the finite element analysis is proposed for reliability assessment where a finite difference method combined with an improved first-order reliability algorithm that omits the non-important random variables but retains sufficient accuracy was developed for reliability estimation. Two numerical examples are described demonstrating the capabilities of the method developed.

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Large deformation analysis of laminated shells by ftnife element method

Cited by 79 publications

References 24 publications

On refined computational models of composite laminates

On refined computational models of composite laminates

Simulation of the cyclic behavior of J-shaped steel hysteresis devices and study on the efficiency for reducing earthquake responses of space structures

Reliability assessment of post-buckling compressive strength of laminated composite plates and stiffened panels under axial compression

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