A simple rectangular element for two-dimensional analysis of laminated composites

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National Aeronautics and Space Administration, Langley Research Center , Hampton, Va
Laminated materials, Composite mate
StatementJohn D. Whitcomb
SeriesNASA technical memorandum -- 86291
ContributionsLangley Research Center
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL14926742M

A simple rectangular finite element was developed for two-dimensional analysis of laminated composite materials. The rectangular laminated composite (RLC) element eliminates the need to add elements to a model simply to account for the material properties of various laminae.

This is particularly advantageous for thick laminates with many by: Get this from a library.

Details A simple rectangular element for two-dimensional analysis of laminated composites PDF

A simple rectangular element for two-dimensional analysis of laminated composites. [J D Whitcomb; Langley Research Center.]. A simple rectangular finite element was developed for two-dimensional analysis of laminated composite materials.

The rectangular laminated composite element eliminates the need to add elements to a model simply to account for the material properties of various laminae.

This is particularly advantageous for thick laminates with many : J. Whitcomb. To this end, a cross sectional finite element stress analysis was applied by Sen and Fish [1, 2] to determine the stresses in glass-epoxy thirty-two-ply flexbeam laminates under torsion and combined tension-torsion loads.

The largest mesh in the finite element analysis consisted of 7, elements w degrees of freedom. An evaluation of the element is conducted with respect to the accuracy obtained in the bending of laminated anistropic rectangular plates with different lamination schemes, loadings, and boundary.

Choudhary and Tungikar () analyzed the geometrically nonlinear behavior of laminated composite plates using the finite element analysis.

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They studied the effect of number of layers, effect of. A Spectral Finite Element Model for Wave Propagation Analysis in Laminated Composite Plate J. Vib. Acoust (August, ) Active Damping of Nonlinear Vibrations of Functionally Graded Laminated Composite Plates using Vertically/Obliquely Reinforced Piezoelectric Composite.

A rectangular finite element for analysing composite multilayered shallow shells in statics, vibration and buckling International Journal for Numerical Methods in Engineering, Vol.

36, No. 4 Modelling of thick composites using a layerwise laminate theory. Book • 4th Edition • Authors: The only restriction that is imposed on the laminate as an element of a composite structure concerns its total thickness, which is assumed to be much smaller than the other dimensions of the structure.

Practical examples of analysis and design of real composite structural components; Show less. 1. Introduction. Composite laminated plates are widely used in modern aerospace structures.

Among the various aspects of the structural performance of elements made of composite materials, rectangular laminated plates has drawn much holes, which ensure pipelines or wires can pass through it, are inevitable in the design progress and bring problem of stress. A review of the recent development of the finite element analysis for laminated composite plates from is presented in this paper.

The literature review is devoted to the recently developed. Consider, a rectangular, thin laminated composite plate of length a, width b and thickness h as shown in Fig The plate consists of a laminate having n number of laminae with different materials, fibre orientations and thicknesses.

The nine-noded quadratic Lagrangian two-dimensional element is used with five and nine degrees of freedom per node. The accuracy of the formulation is verified by analyzing sample problems available in literature.

Numerical results are presented in nondimensional form for symmetric, antisymmetric, and cross-ply laminates, both thick and thin. Analysis of laminated composite shell structures by finite element method pectively. This implies an approximation that all layers rotate through the same angle, a better approach would have been to take separate normal rotations for each layer, but this will involve large number of degrees of freedom and consequently limit the usefulness.

Nacre-like laminated composites modeled using the Voronoi diagram. Finite element analysis (FEA) 1. Introduction. First, we fabricated a simple rectangular specimen composed of the PLA (white) and TPU (red) plastics shown in Fig. 7 using dual extrusion 3D printers.

Description A simple rectangular element for two-dimensional analysis of laminated composites EPUB

The specimen has dimensions of length 60 mm, width 15 mm, and height 7 mm. Ren, J. G., and Hinton, E., “The Finite Element Analysis of Homogeneous and Laminated Composite Plates Using a Simple Higher Order Theory,” Communications in Applied Numerical Methods, 2 (2), pp.

– (). zbMATH CrossRef Google Scholar. A simple rectangular finite element was developed for two-dimensional analysis of laminated composite materials. The full text of this article hosted at is unavailable due to technical difficulties. In this paper a refined higher-order shear deformation theory for the instability finite element analysis of fibre reinforced shell like composite structures is developed.

A higher order shear deformation theory allows parabolic description of the transverse shear stresses and therefore the shear correction factors of the usual shear deformation theory are not required.

The proposed elements, namely NS-MITC3, show good accuracy and convergence as compared to other plate elements when employed to analyze laminated composite plates.

Keywords Node-based smoothed finite element method (NS-FEM) Mixed interpolation of tensorial components (MITC) Higher-order shear deformation theory (HSDT) Laminated composite plates. the free vibration of laminated anisotropic composite conical cylindrical shell structures.

A simple two-noded shear flexible axi-symmetric shell element based on field consistency approach is employed. Shankara and Iyengar [16] developed a C. element for the free vibration analysis of laminated composite plates, together with a higher. namic analyses of laminate-faced sandwich plate using higher-order zig-zag theory (HZZT).

After-wards, Kulkarni and Kapuria () extended the application of a newly improved discrete Kirchoff quadrilateral element, based on third order zigzag theory to vibration analysis of composite and sandwich plates. LAMINATED COMPOSITE PLATES David Roylance Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA Febru Introduction laminate compliance matrix: E E E D D D   Designing structures using composite materials poses unique challenges, especially due to the need for concurrent design of both material and structure.

Students are faced with two options: textbooks that teach the theory of advanced mechanics of composites, but lack computational examples of advanced analysis, and books on finite element analysis that may or may not demonstrate very.

The analysis of textile composites is complicated by the complex micro-structure. It is not practical to account for this microstructure directly using traditional finite elements. “A Simple Rectangular Element for Two-Dimensional Analysis of Laminated Composites.

This book intend to supply readers with some MATLAB codes for finite element analysis of solids and structures. After a short introduction to MATLAB, the book illustrates the finite element implementation of some problems by simple scripts and functions. The following problems are discussed: • Discrete systems, such as springs and bars.

Using a higher order shear deformation theory, finite-element solutions for free vibration analysis of laminated composite plates were also obtained in (Shankara and Iyengar ).

The complete set of linear equations of a second-order theory was derived in Khdeir and Reddy () to analyze the free vibration behavior of cross-ply and. Design Optimization of Laminated Composite Structures Using Explicit Finite Element Analysis by Krista Mika A Thesis Presented in Partial Fulfillment of the Requirements for the Degree Master of Science Approved November by the Graduate Supervisory Committee: Subramaniam Rajan, Chair Narayanan Neithalath Barzin Mobasher.

The solid (or continuum) elements in Abaqus can be used for linear analysis and for complex nonlinear analyses involving contact, plasticity, and large deformations. They are available for stress, heat transfer, acoustic, coupled thermal-stress, coupled pore fluid-stress, piezoelectric, magnetostatic, electromagnetic, and coupled thermal-electrical analyses (see Choosing the appropriate.

The use of bistable unsymmetric cross-ply laminates for morphing application has received growing attention in the last few years. So far, most studies use large rectangular piezoelectric Macro Fiber Composite (MFC) patches bonded at the center of the laminate to induce snap-through.

However, the use of large rectangular MFC patches bonded in the center of the laminates significantly. Dynamic Relaxation (DR) method is presented for the analysis of geometrically linear laterally loaded, rectangular laminated plates.

The analysis uses the Mind. A simple finite element formulation of a higher-order theory for unsymmetrically laminated composite plates. A generalization of two-dimensional theories of laminated composite plates.

Y. Static and free vibration analysis of laminated composite and sandwich spherical shells using a generalized higher order shell theory.element method for modeling complicated geometries and for performing con-vergence checks. The objective of this paper is to introduce a new type of two-dimensional (i.e., plane stress or plane strain) finite element for analysis of laminated composites.

The element is a four-node, bilinear, rectangular element. An ordinary.