Micromechanically Based Multiscale Material Modeling of Polymer Nanocomposites - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Micromechanically Based Multiscale Material Modeling of Polymer Nanocomposites write by Jaesang Yu. This book was released on 2011. Micromechanically Based Multiscale Material Modeling of Polymer Nanocomposites available in PDF, EPUB and Kindle. The Effective Continuum Micromechanics Analysis Code (EC-MAC) was developed for predicting effective properties of composites containing multiple distinct nanoheterogeneities (fibers, spheres, platelets, voids, etc.) each with an arbitrary number of coating layers based upon either the modified Mori-Tanaka method (MTM) and self consistent method (SCM). This code was used to investigate the effect of carbon nanofiber morphology (i.e., hollow versus solid cross-section), nanofiber waviness, and both nanofiber-resin interphase properties and dimensions on bulk nanocomposite elastic moduli. For a given nanofiber axial force-displacement relationship, the elastic modulus for hollow nanofibers can significantly exceed that for solid nanofibers resulting in notable differences in bulk nanocomposite properties. The development of a nanofiber-resin interphase had a notable effect on the bulk elastic moduli. Consistent with results from the literature, small degrees of nanofiber waviness resulted in a significant decrease in effective composite properties. Key aspects of nanofiber morphology were characterized using transmission electron microscopy (TEM) images for VGCNF/vinyl ester (VE) nanocomposites. Three-parameter Weibull probability density functions were generated to describe the statistical variation in nanofiber outer diameters, wall thicknesses, relative wall thicknesses, visible aspect ratios, and visible waviness ratios. Such information could be used to establish more realistic nanofiber moduli and strengths obtained from nanofiber tensile tests, as well as to develop physically motivated computational models for predicting nanocomposite behavior. This study represents one of the first attempts to characterize the distribution of VGCNF features in real thermoset nanocomposites. In addition, the influence of realistic nanoreinforcement geometries, distinct elastic properties, and orientations on the effective elastic moduli was addressed. The effect of multiple distinct heterogeneities, including voids, on the effective elastic moduli was investigated. For the composites containing randomly oriented wavy vapor grown carbon nanofibers (VGCNFs) and voids, the predicted moduli captured the essential character of the experimental data, where the volume fraction of voids was approximated as a nonlinear function of the volume fraction of reinforcements. This study should facilitate the development of multiscale materials design by providing insight into the relationships between nanomaterial morphology and properties across multiple spatial scales that lead to improved macroscale performance.
Mechanics of Multiscale Hybrid Nanocomposites
Mechanics of Multiscale Hybrid Nanocomposites - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Mechanics of Multiscale Hybrid Nanocomposites write by Farzad Ebrahimi. This book was released on 2022-01-25. Mechanics of Multiscale Hybrid Nanocomposites available in PDF, EPUB and Kindle. Mechanics of Multiscale Hybrid Nanocomposites provides a practical and application-based investigation of both static and dynamic behaviors of multiscale hybrid nanocomposites. The book outlines how to predict the mechanical behavior and material characteristics of these nanocomposites via two-step micromechanical homogenization techniques performed in an energy-based approach that is incorporated with the strain-displacement relations of shear deformable beam, plate and shell theories. The effects of using various nanofillers are detailed, providing readers with the best methods of improving nanocomposite stiffness. Both numerical (Ritz, Rayleigh-Ritz, etc.) and analytical (Navier, Galerkin, etc.) solution methods are outlined, along with examples and techniques. Demonstrates the influences of carbon nanotube agglomerates and wave phenomena on the constitutive modeling of three-phase hybrid nanocomposites Analyzes nonlinear dynamic characteristics of hybrid nanocomposite systems, as well as how to monitor the system’s stability via linearization technique Discusses the stability of linear nanocomposite systems subjected to the dispersion of elastic waves and bending loads Outlines how to design three-phase nanocomposite structures for resistance against buckling-mode failure Instructs how to derive the governing equations of continuous systems in both linear and nonlinear regimes in the framework of various types of kinematic shell and plate theories
Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites
Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites write by Sumit Sharma. This book was released on 2021-03-03. Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites available in PDF, EPUB and Kindle. Learn to model your own problems for predicting the properties of polymer-based composites Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites: Nanoscale to Continuum Simulations provides readers with a thorough and up-to-date overview of nano, micro, and continuum approaches for the multiscale modeling of polymer-based composites. Covering nanocomposite development, theoretical models, and common simulation methods, the text includes a variety of case studies and scripting tutorials that enable readers to apply and further develop the supplied simulations. The book describes the foundations of molecular dynamics and continuum mechanics methods, guides readers through the basic steps required for multiscale modeling of any material, and correlates the results between the experimental and theoretical work performed. Focused primarily on nanocomposites, the methods covered in the book are applicable to various other materials such as carbon nanotubes, polymers, metals, and ceramics. Throughout the book, readers are introduced to key topics of relevance to nanocomposite materials and structures—supported by journal articles that discuss recent developments in modeling techniques and in the prediction of mechanical and thermal properties. This timely, highly practical resource: Explains the molecular dynamics (MD) simulation procedure for nanofiber and nanoparticle reinforced polymer composites Compares results of experimental and theoretical results from mechanical models at different length scales Covers different types of fibers and matrix materials that constitute composite materials, including glass, boron, carbon, and Kevlar Reviews models that predict the stiffness of short-fiber composites, including the self-consistent model for finite-length fibers, bounding models, and the Halpin-Tsai equation Describes various molecular modeling methods such as Monte Carlo, Brownian dynamics, dissipative particle dynamics, and lattice Boltzmann methods Highlights the potential of nanocomposites for defense and space applications Perfect for materials scientists, materials engineers, polymer scientists, and mechanical engineers, Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites is also a must-have reference for computer simulation scientists seeking to improve their understanding of reinforced polymer nanocomposites.
Multiscale Modeling of Thermal and Mechanical Properties of Nanostructured Materials and Polymer Nanocomposites
Multiscale Modeling of Thermal and Mechanical Properties of Nanostructured Materials and Polymer Nanocomposites - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Multiscale Modeling of Thermal and Mechanical Properties of Nanostructured Materials and Polymer Nanocomposites write by Bohayra Mortazavi. This book was released on 2013. Multiscale Modeling of Thermal and Mechanical Properties of Nanostructured Materials and Polymer Nanocomposites available in PDF, EPUB and Kindle. Nanostructured materials are gaining an ongoing demand because of their exceptional chemical and physical properties. Due to complexities and costs of experimental studies at nanoscale, computer simulations are getting more attractive asexperimental alternatives. In this PhD work, we tried to use combination of atomistic simulations and continuum modeling for the evaluation of thermal conductivity and elastic stiffness of nanostructured materials. We used molecular dynamics simulations to probe and investigate the thermal and mechanical response of materials at nanoscale. The finite element and micromechanics methods that are on the basis of continuum mechanics theories were used to evaluate the bulk properties of materials. The predicted properties are then compared with existing experimental results.
Theory and Modeling of Polymer Nanocomposites
Theory and Modeling of Polymer Nanocomposites - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Theory and Modeling of Polymer Nanocomposites write by Valeriy V. Ginzburg. This book was released on 2020-12-16. Theory and Modeling of Polymer Nanocomposites available in PDF, EPUB and Kindle. This edited volume brings together the state of the art in polymer nanocomposite theory and modeling, creating a roadmap for scientists and engineers seeking to design new advanced materials. The book opens with a review of molecular and mesoscale models predicting equilibrium and non-equilibrium nanoscale structure of hybrid materials as a function of composition and, especially, filler types. Subsequent chapters cover the methods and analyses used for describing the dynamics of nanocomposites and their mechanical and physical properties. Dedicated chapters present best practices for predicting materials properties of practical interest, including thermal and electrical conductivity, optical properties, barrier properties, and flammability. Each chapter is written by leading academic and industrial scientists working in each respective sub-field. The overview of modeling methodology combined with detailed examples of property predictions for specific systems will make this book useful for academic and industrial practitioners alike.
