Modeling of Setting Stresses in Particle Reinforced Polymer Composites Using Finite Element Analysis PDF Download

Author: Aladin Mohamed Boriek
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 380

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author: Samit Roy
Publisher: CRC Press
ISBN: 1466586508
Category : Science
Languages : en
Pages : 296

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Book Description
This book provides a better understanding of the theories associated with finite element models of elastic and viscoelastic response of polymers and polymer composites. It covers computational modeling and life-prediction of polymers and polymeric composites in aggressive environments. It begins with a review of mathematical preliminaries, equations of anisotropic elasticity, and then presents finite element analysis of viscoelasticity and the diffusion process in polymers and polymeric composites. The book provides a reference for engineers and scientists and can be used as a textbook in graduate courses.

Author: E. Andreassen
Publisher: iSmithers Rapra Publishing
ISBN: 9780080420554
Category : Technology & Engineering
Languages : en
Pages : 130

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Book Description
The use of computers to numerically analyse polymer processing was first reported as for back as the 1950's, and the first commercial software became available around 20 years ago. Much research has been carried out since that time, and this report aims to summarise contemporary trends in both commercial and academic research and development. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 850

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Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 568

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Author: Shrikant Shyam Nargund
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Book Description
The dynamic behavior of polymer composites is significantly affected by the properties of their micro constituents including shape and size of inclusions and inclusions/matrix adhesion properties. Finite element modeling provides a viable approach for investigating the effects of micro constituent structure on the dynamic behavior of polymer composites. In this thesis, finite element (FE) modeling is used to investigate wave propagation through polymer matrix particulate composite. This finite element models consists of three phases; polymer matrix, particle reinforcements and interphase zones between inclusions and matrix. The interphase zones are modeled explicitly to study how the properties of interphase can affect the dynamic behavior of the polymer. Interphase region physically indicates a coupling agent added in between the two materials which improve bonding as well as reduce stress concentration at the interface. By performing analysis on three dimensional finite element models, the attenuation characteristic of ultrasonic longitudinal waves in the composite are evaluated. An interface between polymer and inclusions is modeled by Cohesive Zone Modeling (CZM) implementing bilinear traction separation law. We specifically investigate how to maximize the wave attenuation in composite by changing the size, volume fraction of inclusions and interphase material properties. The effect of frequency of wave on wave attenuation is also studied by varying the frequency in between 1MHz and 4MHz. The analysis is performed using the finite element software LS-Dyna and models are prepared using pre-processing software Hypermesh. Results of the tests revealed that higher volume fraction of inclusions give a greater attenuation compared to lower volume fraction model. Also small size of inclusions is preferred over lager size as they give higher wave attenuation. Results are also affected by the arrangement/ distribution of the inclusions. Softer interphase zone (low stiffness) performs better in absorbing the incident wave energy, hence giving higher wave attenuation than harder (high stiffness) interphase.

Author: Amir R. Khoei
Publisher: John Wiley & Sons
ISBN: 1118457684
Category : Science
Languages : en
Pages : 600

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Book Description
Introduces the theory and applications of the extended finite element method (XFEM) in the linear and nonlinear problems of continua, structures and geomechanics Explores the concept of partition of unity, various enrichment functions, and fundamentals of XFEM formulation. Covers numerous applications of XFEM including fracture mechanics, large deformation, plasticity, multiphase flow, hydraulic fracturing and contact problems Accompanied by a website hosting source code and examples

Author: Leon L. Mishnaevsky, Jr
Publisher: John Wiley & Sons
ISBN: 9780470513187
Category : Technology & Engineering
Languages : en
Pages : 294

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Book Description
Mechanical properties of composite materials can be improved by tailoring their microstructures. Optimal microstructures of composites, which ensure desired properties of composite materials, can be determined in computational experiments. The subject of this book is the computational analysis of interrelations between mechanical properties (e.g., strength, damage resistance stiffness) and microstructures of composites. The methods of mesomechanics of composites are reviewed, and applied to the modelling of the mechanical behaviour of different groups of composites. Individual chapters are devoted to the computational analysis of the microstructure- mechanical properties relationships of particle reinforced composites, functionally graded and particle clusters reinforced composites, interpenetrating phase and unidirectional fiber reinforced composites, and machining tools materials.

Author: F L Matthews
Publisher: Elsevier
ISBN: 1855738929
Category : Technology & Engineering
Languages : en
Pages : 225

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Book Description
Finite element modelling of composite materials and structures provides an introduction to a technique which is increasingly being used as an analytical tool for composite materials.The text is presented in four parts: Part one sets the scene and reviews the fundamentals of composite materials together with the basic nature of FRP and its constituents. Two-dimensional stress-strain is covered, as is laminated plated theory and its limitations. Part two reviews the basic principles of FE analysis, starting with underlying theoretical issues and going on to show how elements are derived, a model is generated and results are processed. Part three builds on the basics of FE analysis and considers the particular issues that arise in applying finite elements to composites, especially to the layered nature of the material. Part four deals with the application of FE to FRP composites, presenting analytical models alongside FE representations. Specific issues addressed include interlaminar stresses, fracture delamination, joints and fatigue. This book is invaluable for students of materials science and engineering, and for engineers and others wishing to expand their knowledge of structural analysis. Covers important work on finite element analysis of composite material performance Based on material developed for an MSc course at Imperial College, London, UK Covers particular problems such as holes, free edges with FE results compared with experimental data and classical analysis