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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720669692
Category :
Languages : en
Pages : 34
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Book Description
A research program is being undertaken to develop rate dependent deformation and failure models for the analysis of polymer matrix composite materials. In previous work in this program, strain-rate dependent inelastic constitutive equations used to analyze polymers have been implemented into a mechanics of materials based composite micromechanics method. In the current work, modifications to the micromechanics model have been implemented to improve the calculation of the effective inelastic strain. Additionally, modifications to the polymer constitutive model are discussed in which pressure dependence is incorporated into the equations in order to improve the calculation of constituent and composite shear stresses. The Hashin failure criterion is implemented into the analysis method to allow for the calculation of ply level failure stresses. The deformation response and failure stresses for two representative uniaxial polymer matrix composites, IM7/977-2 and AS4-PEEK, are predicted for varying strain rates and fiber orientations. The predicted results compare favorably to experimentally obtained values.Goldberg, Robert K. and Stouffer, Donald C.Glenn Research CenterPOLYMER MATRIX COMPOSITES; DEFORMATION; STRAIN RATE; FAILURE ANALYSIS; MICROMECHANICS; PRESSURE DEPENDENCE; SHEAR STRESS; FIBER ORIENTATION; FAILURE; CONSTITUTIVE EQUATIONS; CRITERIA
Author: Amer Society Composi
Publisher: CRC Press
ISBN: 9781566767910
Category : Technology & Engineering
Languages : en
Pages : 1030
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Book Description
Conference proceedings of the Fourteenth American Society for Composites held on the September 27-29 1999 at the Holiday Inn-1675 Conference Centre, Fairborn, Ohio.
Author: Robert Keith Goldberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Author: Robert K. Goldberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Author: Jacob Aboudi
Publisher: Elsevier
ISBN: 1483290999
Category : Technology & Engineering
Languages : en
Pages : 341
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In the last decade the author has been engaged in developing a micromechanical composite model based on the study of interacting periodic cells. In this two-phase model, the inclusion is assumed to occupy a single cell whereas the matrix material occupies several surrounding cells. A prominent feature of the micromechanical method of cells is the transition from a medium, with a periodic microstructure to an equivalent homogeneous continuum which effectively represents the composite material. Of great importance is the significant advantage of the cells model in its capability to analyze elastic as well as nonelastic constituents (e.g. viscoelastic, elastoplastic and nonlinear elastic), thus forming a unified approach in the prediction of the overall behaviour of composite material. This book deals almost exclusively with this unified theory and its various applications.
Author:
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 1032
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Author: Rui Miranda Guedes
Publisher: Woodhead Publishing
ISBN: 0081026021
Category : Technology & Engineering
Languages : en
Pages : 590
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Creep and Fatigue in Polymer Matrix Composites, Second Edition, updates the latest research in modeling and predicting creep and fatigue in polymer matrix composites. The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a way of predicting performance and service life. Final sections discuss techniques for modeling creep rupture and failure and how to test and predict long-term creep and fatigue in polymer matrix composites. - Reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites - Puts a specific focus on viscoelastic and viscoplastic modeling - Features the time-temperature-age superposition principle for predicting long-term response - Examines the creep rupture and damage interaction, with a particular focus on time-dependent failure criteria for the lifetime prediction of polymer matrix composite structures that are illustrated using experimental cases
Author: Robert K. Goldberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Author: Amer Society Composi
Publisher: CRC Press
ISBN: 9781587160523
Category : Technology & Engineering
Languages : en
Pages : 1258
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