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Friday, July 24, 2020 | History

3 edition of An approximate solution for interlaminar stresses in laminated composites found in the catalog.

An approximate solution for interlaminar stresses in laminated composites

An approximate solution for interlaminar stresses in laminated composites

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  • 8 Currently reading

Published by School of Engineering and Applied Science, Applied Mechanics Program, University of Virginia, National Aeronautics and Space Administration, National Technical Information Service, distributor in Charlottesville, Va, [Washington, DC, Springfield, Va.? .
Written in English

    Subjects:
  • Strains and stresses.,
  • Laminated materials.

  • Edition Notes

    StatementCheryl A. Rose, Carl T. Herakovich.
    SeriesNASA-CR -- 190537., NASA contractor report -- NASA CR-190537.
    ContributionsHerakovich, Carl T., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15366483M

      Standard test method for apparent interlaminar shear strength of parallel fiber composites by short beam method. ASTM D Annual Book of ASTM Standards. ASTM, West Conshohocken, PA. pp. _____. Standard terminology of high-modulus reinforcing fibers and their composites. ASTM D Annual Book of ASTM Standards. The approximate solution expressed by Quasi-Shannon wavelet satisfies the clamped boundary conditions of the plate easily. Hence, it is convenient to establish the wavelet collocation precise integration method for the static problem of the rectangular laminated plate with .

    [7] B.V. Sankar () "Interlaminar Shear Stresses in Composite Laminates Due to Static Indentation". Journal of Reinforced Plastics and Composites, 8(5) [6] B.V. Sankar () "An Approximate Green's Function for Beams and Application to Contact Problems". Journal of Applied Mechanics, 54(3) free edges and transverse cracks in laminated composites. On the basis of a state space formulation and the generalised plane strain condition, the model can approximate the stress singularities in the vicinity of free edges and crack tips, while guarantee the continuity of interlaminar stresses across material interfaces.

    53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference20th AIAA/ASME/AHS Adaptive Structures Conference14th AIAA Honolulu, Hawaii 53rd AIAA/A. Updated and expanded to reflect recent advances in the field, this Second Edition retains all of the features-logical, streamlined organization, thorough coverage, and self-contained treatment-that made the first edition a book begins with a question-and-answer style introduction to composite materials, including updated material.


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An approximate solution for interlaminar stresses in laminated composites Download PDF EPUB FB2

Get this from a library. An approximate solution for interlaminar stresses in laminated composites. [Cheryl A Rose; Carl T Herakovich; United States. National Aeronautics and. An approximate elasticity solution is developed for the response of the finite-width, angle-ply composite laminate under uniform axial strain.

The solution yields components of the displacement vector, strain tensor, and stress tensor in the form of sinusoidal-hyperbolic by: Interlaminar Stresses in Composite Laminates Subjected to Anticlastic Bending Deformation Article (PDF Available) in Journal of Applied Mechanics 80(4) May with Reads.

Interlaminar stresses are the stress components associated with the stacking direction of a laminated plate. In general, the stress status at an arbitrary point in a laminated plate can be characterized by six independent stress tensor components (σ xx, σ yy, σ zz, σ yz, σ xz, σ xy) in the form of a symmetric second-order stress tensor S (Fig.

1), in which the shear stress. Since there is a great need for accurate and efficient calculation of interlaminar stresses for the design using composites, the partial hybrid finite method does provide one possible solution. Hybrid finite method has been in existence since and a significant amount of work has been done on the topic.

This state of deformation is termed anticlastic bending. The approximate elasticity solution for this bending deformation is shown to recover laminated plate theory predictions at interior regions of the laminate and thereby illustrates the boundary layer character of this interlaminar by: Interlaminar stress distribution of laminated composites using the mixed-dimensional transition element Article (PDF Available) in Journal of Composite Materials 48(1).

Abstract. In an effort to improve our understanding of delamination phenomena in composite bodies, an approximate method to define the distribution of the interlaminar normal stress, σ z, along the central plane of a symmetric, finite-width, composite laminate is approach is based upon a modified version of a recent theory developed by Whitney and Sun Cited by:   Interlaminar stresses near free edges in composite laminates were analyzed by considering interface modeling.

Previous regular analytical solutions for free edge stress are not rigorous in their linear elastic modeling with dissimilar interfaces between homogeneous plies of laminated composites. Analysis and Performance of Fiber Composites, Fourth Edition features updated and expanded coverage of all technical aspects of fiber composites, including the latest trends and developments in materials, manufacturing processes, and materials applications, as well as the latest experimental characterization methods.

The obtained results for practical composites show that the bounds present a good estimation for particular modes and material properties. Therefore, the bounds may be considered as the first step on the way to the exact solution of the problem of stability in compression of composites with particular interlaminar by: 1.

_' LAYER 1 LAYER 2 ./0 -/5 -5 v 0 x'max 5 10 15 20 I Fig. 6b Comparison of exact and approximate tangential stresses. Bending of Laminated Plates V 3Y E, Wmaxh 3 PRESENT THEORY THEORY ELASTICITY \ ^^^^ i 10 1 _L_ A IS 1 20 L_ 25 J 30 I Fig. 7 Comparison of exact and approximate middle surface transverse by: Stress concentration phenomena in composite laminates are technically important situations.

A well-known problem of this class is the free-edge effect in composite laminates or as a superordinated Cited by: Practical Analysis of Aircraft Composites 1. Analysis and Performance of Fiber Composites, Third Edition is a revision of the classic fundamentals book on composite materials.

It provides a complete, up-to-date treatment of the mechanics, materials, analysis, fabrication, characterization, and performance of composite materials, complete with numerous worked examples and exercise Edition: 3rd   "Analysis and Performance of Fiber Composites, Third Edition" is a revision of the classic fundamentals book on composite materials.

It provides a complete, up-to-date treatment of the mechanics, materials, analysis, fabrication, characterization, and performance of composite materials, complete with numerous worked examples and exercise problems. Determination of stress‐strain state in contemporary laminated composite plates containing layers with continuous unidirectional fibers requires the application of refined plate theories, which include layerwise theory.

In contrast to homogeneous isotropic plates, heterogeneity of the anisotropic structure of laminated composite plates often leads to the appearance of Cited by: 1.

() Approximate solution of singular integro-differential equations in elastic contact problems. International Journal for Numerical Methods in Engineering() Singular Stresses in an Elastic Sphere Having an Annular by: Abstract.

This paper considers a transient thermal stress analysis of a laminated beam made of different materials in multilayers. To simplify the problem, the heat conduction problem is treated as a one-dimensional case in the direction of thickness; then, the transient temperature solution is evaluated using the Laplace transform method.

@article{osti_, title = {Lamb-wave propagation in laminated composite plates}, author = {Tang, B.S.L.}, abstractNote = {Various approximate theories have been proposed to model low-frequency Lamb-wave propagation in composite laminates.

In this study, an approximate solution was derived from an elementary shear-deformation plate theory. The free-edge effect around holes in composite laminates has recieved less attention than the straight free-edge problem.

Mathematical analysis of free-edge stresses around holes have mostly been numerical. The present work develops a simple approximate solution of the hole problem which allows for low cost computation.

The method assumes that only the deviations Cited by: 1.Using the properties of the related orthogonal polynomials, approximate solutions of systems of simultaneous singular integral equations are obtained, in which the essential features of the singularity of the unknown functions are preserved.

In the system of integral equations of the first kind, the fundamental solution is the weight function of the Chebyshev polynomials of first or Cited by: Interlaminar stresses in composite laminates under axial tension.

Journal of Composite Materials. ;4(4) Pipes RB, Pagano NJ. Interlaminar stresses in composites laminates - An approximate elasticity solution. Journal of Applied Mechanics. ;41(3) Pister KS, Dong SB. Elastic bending of layered plates.