Large displacement analysis of sandwich plates and shells with symmetric/asymmetric lamination

Liang, Yating; Izzuddin, B.A.

doi:10.1016/j.compstruc.2016.01.001

Cited by 15 publications

(8 citation statements)

References 43 publications

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“…This is another EICR algorithm for shell element frame, which was firstly introduced by Izzuddin, 22 and the pertaining applications for many different shell element studies can be found in the literature. [23][24][25][26][27][28] Different from the former 2 EICR formulations, it does not extract pure deformation from total deformation completely. Similar to the classical co-rotational method presented in Section 3.1, this algorithm starts from the establishment of the relationship between local and global variables, but the interesting thing is that the local deformation in this formulation is not pure.…”

Section: Co-rotational Methods Without Removing Rigid Body Movement Comentioning

confidence: 99%

“…This is another EICR algorithm for shell element frame, which was firstly introduced by Izzuddin, and the pertaining applications for many different shell element studies can be found in the literature . Different from the former 2 EICR formulations, it does not extract pure deformation from total deformation completely.…”

Section: Existing Co‐rotational Algorithmsmentioning

confidence: 99%

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A simplified co‐rotational method for quadrilateral shell elements in geometrically nonlinear analysis

Tang

Chan

2017

Numerical Meth Engineering

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Summary This paper presents a simplified co‐rotational formulation for quadrilateral shell elements inheriting the merit of element‐independence from the traditional co‐rotational approach in literature. With the objective of application to nonlinear analysis of civil engineering structures, the authors further simplify the formulation of the geometrical stiffness using the small strain assumption, which is valid in the co‐rotational approach, with the warping effects considered as eccentricities. Compared with the traditional element‐independent co‐rotational method, the projector is neglected both in the tangent stiffness matrix and in the internal force vector for simplicity in formulation. Meanwhile, a quadrilateral flat shell element allowing for drilling rotations is adopted and incorporated into this simplified co‐rotational algorithm for geometrically nonlinear analysis involved with large displacements and large rotations. Several benchmark problems are presented to confirm the efficiency and accuracy of the proposed method for practical applications.

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Section: Co-rotational Methods Without Removing Rigid Body Movement Comentioning

confidence: 99%

Section: Existing Co‐rotational Algorithmsmentioning

confidence: 99%

A simplified co‐rotational method for quadrilateral shell elements in geometrically nonlinear analysis

Tang

Chan

2017

Numerical Meth Engineering

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“…Simplified FE models can overcome these restrictions, where common methods with improved efficiency rely on the employment of sandwich shell finite elements, using layerwise laminate theory (Carrera 1998), while still defining distinct material properties for the faceplates and the homogeneous core. An effective approach has previously been proposed by Liang and Izzuddin (2016) to perform linear and nonlinear analysis of sandwich structures using a 2D local shell system, where a co-rotational approach is employed to model geometric nonlinearity (Izzuddin 2007;Izzuddin and Liang 2016).…”

Section: Introductionmentioning

confidence: 99%

Gradient-based optimisation of rectangular honeycomb core sandwich panels

Santos

Izzuddin

Macorini

2022

Struct Multidisc Optim

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When subjected to bending loads, sandwich panels are highly efficient structural components with the potential to achieve substantial weight reduction. A successful design methodology for sandwich panels should aim at maximising this potential for weight reduction while considering the various possible failure mode in a simple yet accurate manner. This paper investigates the application of steel sandwich panels as two-way deck systems. Near-optimal designs for all-steel Rectangular Honeycomb Core Sandwich Panels (RHCSPs) under general out-of-plane loading are achieved using a gradient-based optimisation method. The method relies on continuously optimising the design limit state constraints while the response constraints are considered a priori in the analysis stage using simplified analytical assessment. Plate bending solutions and sandwich bending solutions are used as alternatives to estimate the internal stresses on each layer of the sandwich panel under out-of-plane loads, where comparisons are made between these two analysis methods in terms of computational efficiency and accuracy. The internal stresses are then used to formulate design limit state equations for each relevant failure mode, including material yielding, plate buckling and deformation control. The Method of Moving Asymptotes is used for the optimisation of RHCSPs, considering the limit states as the constraints of the optimisation problem and weight as the objective function to be minimised. The proposed methodology for simplified assessment is verified against detailed nonlinear finite element models for optimal design solutions. The implications of the results of the proposed optimisation strategy on the development of a systematic design methodology for RHCSPs are also highlighted, making specific reference to critical failure modes.

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“…These solutions are significantly related to application of composite materials [1][2][3][4][5][6]. One of important areas in shell-type structures (bodies of missiles, ships, fuselages and wings of aircraft and helicopters, as well as other items) is creation and expanding application of multilayer [7][8][9][10][11][12], sandwich structures the elements of which consist of two carrying layers and the light core between them [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of a Physically Nonlinear Problem of the Longitudinal Bending of the Sandwich Plate With a Transversal-Soft Core

2018

PNRPU MB

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Large displacement analysis of sandwich plates and shells with symmetric/asymmetric lamination

Cited by 15 publications

References 43 publications

A simplified co‐rotational method for quadrilateral shell elements in geometrically nonlinear analysis

A simplified co‐rotational method for quadrilateral shell elements in geometrically nonlinear analysis

Gradient-based optimisation of rectangular honeycomb core sandwich panels

Numerical Investigation of a Physically Nonlinear Problem of the Longitudinal Bending of the Sandwich Plate With a Transversal-Soft Core

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