Constitutive Modeling Of Nanotube Reinforced Polymer Composite Systems Nasa

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Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems

Author : Gregory M. Odegard
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems by : Gregory M. Odegard

Download or read book Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems written by Gregory M. Odegard and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a technique has been proposed for developing constitive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Since the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice structures of the nanotube and polymer chains cannot be be considered continuous, and the bulk mechanical properties of the SWNT/polymer composites can no longer be determined through traditional micromechanical approaches that are formulated using continuum mechanics. It is proposed herein that the nanotube, the local polymer near the nanotube, and the nanotube/polymer interface can be modeled as an effective continuum fiber using an equivalent-continuum modeling method.

Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems ... Nasa

Author : United States. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (639 download)

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Book Synopsis Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems ... Nasa by : United States. National Aeronautics and Space Administration

Download or read book Constitutive Modeling of Nanotube-reinforced Polymer Composite Systems ... Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Constitutive Modeling of Nanotube-Reinforced Polymer Composite Systems

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721268702
Total Pages : 32 pages
Book Rating : 4.2/5 (687 download)

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Book Synopsis Constitutive Modeling of Nanotube-Reinforced Polymer Composite Systems by : National Aeronautics and Space Administration (NASA)

Download or read book Constitutive Modeling of Nanotube-Reinforced Polymer Composite Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a technique has been proposed for developing constitutive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Since the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice structures of the nanotube and polymer chains cannot be considered continuous, and the bulk mechanical properties of the SWNT/polymer composites can no longer be determined through traditional micromechanical approaches that are formulated using continuum mechanics. It is proposed herein that the nanotube, the local polymer near the nanotube, and the nanotube/polymer interface can be modeled as an effective continuum fiber using an equivalent-continuum modeling method. The effective fiber retains the local molecular structure and bonding information and serves as a means for incorporating micromechanical analyses for the prediction of bulk mechanical properties of SWNT/polymer composites with various nanotube sizes and orientations. As an example, the proposed approach is used for the constitutive modeling of two SWNT/polyethylene composite systems, one with continuous and aligned SWNT and the other with discontinuous and randomly aligned nanotubes. Odegard, Gregory M. and Harik, Vasyl M. and Wise, Kristopher E. and Gates, Thomas S. Langley Research Center NASA/TM-2001-211044, L-18094, NAS 1.15:211044

Constitutive Modeling of Nanotube-Reinforced Polymer Composites

Author : G. M. Odegard
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Constitutive Modeling of Nanotube-Reinforced Polymer Composites by : G. M. Odegard

Download or read book Constitutive Modeling of Nanotube-Reinforced Polymer Composites written by G. M. Odegard and published by . This book was released on 2002 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a technique is presented for developing constitutive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Because the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice structures of the nanotube and polymer chains cannot be considered continuous, and the bulk mechanical properties can no longer be determined through the traditional micromechanical approaches that are formulated by using continuum mechanics. It is proposed herein that the nanotube, the local polymer near the nanotube, and the nanotube/polymer interface can be modeled as an effective continuum fiber using an equivalent-continuum modeling method. The micromechanical analyses for the prediction of bulk mechanical properties of SWNT/polymer composites with various nanotube lengths, concentrations, and orientations. As an example, the proposed approach is used for the constitutive modeling of two SWNT/polyimide composite systems.

Constitutive Modeling of Nanotube-Reinforced Polymer Composites

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720451501
Total Pages : 36 pages
Book Rating : 4.4/5 (515 download)

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Book Synopsis Constitutive Modeling of Nanotube-Reinforced Polymer Composites by : National Aeronautics and Space Administration (NASA)

Download or read book Constitutive Modeling of Nanotube-Reinforced Polymer Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a technique is presented for developing constitutive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Because the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice structures of the nanotube and polymer chains cannot be considered continuous, and the bulk mechanical properties can no longer be determined through traditional micromechanical approaches that are formulated by using continuum mechanics. It is proposed herein that the nanotube, the local polymer near the nanotube, and the nanotube/polymer interface can be modeled as an effective continuum fiber using an equivalent-continuum modeling method. The effective fiber serves as a means for incorporating micromechanical analyses for the prediction of bulk mechanical properties of SWNT/polymer composites with various nanotube lengths, concentrations, and orientations. As an example, the proposed approach is used for the constitutive modeling of two SWNT/polyimide composite systems.Odegard, G. M. and Gates, T. S. and Wise, K. E. and Park, C. and Siochi, E. J. and Bushnell, Dennis M. (Technical Monitor)Langley Research CenterCARBON NANOTUBES; POLYMERS; MOLECULAR STRUCTURE; BONDING; COMPOSITE STRUCTURES; CONTINUUM MODELING; MATHEMATICAL MODELS; MECHANICAL PROPERTIES; MOLECULAR CHAINS; POLYIMIDES

Nanowires and Nanobelts

Author : Zhong Lin Wang
Publisher : Springer Science & Business Media
ISBN 13 : 0387287450
Total Pages : 482 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Nanowires and Nanobelts by : Zhong Lin Wang

Download or read book Nanowires and Nanobelts written by Zhong Lin Wang and published by Springer Science & Business Media. This book was released on 2013-06-05 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 1, Metal and Semiconductor Nanowires covers a wide range of materials systems, from noble metals (such as Au, Ag, Cu), single element semiconductors (such as Si and Ge), compound semiconductors (such as InP, CdS and GaAs as well as heterostructures), nitrides (such as GaN and Si3N4) to carbides (such as SiC). The objective of this volume is to cover the synthesis, properties and device applications of nanowires based on metal and semiconductor materials. The volume starts with a review on novel electronic and optical nanodevices, nanosensors and logic circuits that have been built using individual nanowires as building blocks. Then, the theoretical background for electrical properties and mechanical properties of nanowires is given. The molecular nanowires, their quantized conductance, and metallic nanowires synthesized by chemical technique will be introduced next. Finally, the volume covers the synthesis and properties of semiconductor and nitrides nanowires.

纳米线和纳米带——材料、性能和器件卷1:金属和特种纳米线

Author :
Publisher : 清华大学出版社有限公司
ISBN 13 : 9787302082149
Total Pages : 490 pages
Book Rating : 4.0/5 (821 download)

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Book Synopsis 纳米线和纳米带——材料、性能和器件卷1:金属和特种纳米线 by :

Download or read book 纳米线和纳米带——材料、性能和器件卷1:金属和特种纳米线 written by and published by 清华大学出版社有限公司. This book was released on 2004 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Nanoscience, Engineering, and Technology

Author : William A. Goddard III
Publisher : CRC Press
ISBN 13 : 142000784X
Total Pages : 1080 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Handbook of Nanoscience, Engineering, and Technology by : William A. Goddard III

Download or read book Handbook of Nanoscience, Engineering, and Technology written by William A. Goddard III and published by CRC Press. This book was released on 2007-05-03 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to study and manipulate matter at the nanoscale is the defining feature of 21st-century science. The first edition of the standard-setting Handbook of Nanoscience, Engineering, and Technology saw the field through its infancy. Reassembling the preeminent team of leading scientists and researchers from all areas of nanoscience and nanote

NASA Langley Scientific and Technical Information Output-2001

Author :
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Langley Scientific and Technical Information Output-2001 by :

Download or read book NASA Langley Scientific and Technical Information Output-2001 written by and published by . This book was released on 2002 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ICASE Semiannual Report

Author :
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis ICASE Semiannual Report by :

Download or read book ICASE Semiannual Report written by and published by . This book was released on 2002 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes research conducted at ICASE in applied mathematics, computer science, fluid mechanics, and structures and material sciences during the period October 1, 2000 through March 31, 2001.

Clay-containing Polymeric Nanocomposites

Author : L. A. Utracki
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574829
Total Pages : 382 pages
Book Rating : 4.5/5 (748 download)

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Book Synopsis Clay-containing Polymeric Nanocomposites by : L. A. Utracki

Download or read book Clay-containing Polymeric Nanocomposites written by L. A. Utracki and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a very comprehensive book and represents the forefront of the technology of Clay-Containing Polymeric Nanocomposites.

Carbon Nanotube Reinforced Composites

Author : Marcio Loos
Publisher : Elsevier
ISBN 13 : 145573196X
Total Pages : 305 pages
Book Rating : 4.4/5 (557 download)

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Book Synopsis Carbon Nanotube Reinforced Composites by : Marcio Loos

Download or read book Carbon Nanotube Reinforced Composites written by Marcio Loos and published by Elsevier. This book was released on 2014-09-11 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube Reinforced Composites introduces a wide audience of engineers, scientists and product designers to this important and rapidly expanding class of high performance composites. Dr Loos provides readers with the scientific fundamentals of carbon nanotubes (CNTs), CNT composites and nanotechnology in a way which will enable them to understand the performance, capability and potential of the materials under discussion. He also investigates how CNT reinforcement can be used to enhance the mechanical, electrical and thermal properties of polymer composites. Production methods, processing technologies and applications are fully examined, with reference to relevant patents. Finally, health and safety issues related to the use of CNTs are investigated. Dr. Loos compares the theoretical expectations of using CNTs to the results obtained in labs, and explains the reasons for the discrepancy between theoretical and experimental results. This approach makes the book an essential reference and practical guide for engineers and product developers working with reinforced polymers – as well as researchers and students in polymer science, materials and nanotechnology. A wealth of applications information is included, taken from the wide range of industry sectors utilizing CNT reinforced composites, such as energy, coatings, defense, electronics, medical devices, and high performance sports equipment. Introduces a wide range of readers involved in plastics engineering, product design and manufacturing to the relevant topics in nano-science, nanotechnology, nanotubes and composites. Assesses effects of CNTs as reinforcing agents, both in a materials context and an applications setting. Focuses on applications aspects – performance, cost, health and safety, etc – for a wide range of industry sectors, e.g. energy, coatings, defense, electronics, medical devices, high performance sports equipment, etc.

Rate Dependent Constitutive Models for Fiber Reinforced Polymer Composites

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781728893273
Total Pages : 32 pages
Book Rating : 4.8/5 (932 download)

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Book Synopsis Rate Dependent Constitutive Models for Fiber Reinforced Polymer Composites by : National Aeronautics and Space Adm Nasa

Download or read book Rate Dependent Constitutive Models for Fiber Reinforced Polymer Composites written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-17 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A literature survey was conducted to assess the state-of-the-art in rate dependent constitutive models for continuous fiber reinforced polymer matrix composite (PMC) materials. Several recent models which include formulations for describing plasticity, viscoelasticity, viscoplasticity, and rate-dependent phenomenon such as creep and stress relaxation are outlined and compared. When appropriate, these comparisons include brief descriptions of the mathematical formulations, the test procedures required for generating material constants, and details of available data comparing test results to analytical predictions. Gates, Thomas S. Langley Research Center RTOP 505-63-01-05...

Ls-Dyna Implementation of Polymer Matrix Composite Model Under High Strain Rate Impact

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721587933
Total Pages : 34 pages
Book Rating : 4.5/5 (879 download)

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Book Synopsis Ls-Dyna Implementation of Polymer Matrix Composite Model Under High Strain Rate Impact by : National Aeronautics and Space Administration (NASA)

Download or read book Ls-Dyna Implementation of Polymer Matrix Composite Model Under High Strain Rate Impact written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recently developed constitutive model is implemented into LS-DYNA as a user defined material model (UMAT) to characterize the nonlinear strain rate dependent behavior of polymers. By utilizing this model within a micromechanics technique based on a laminate analogy, an algorithm to analyze the strain rate dependent, nonlinear deformation of a fiber reinforced polymer matrix composite is then developed as a UMAT to simulate the response of these composites under high strain rate impact. The models are designed for shell elements in order to ensure computational efficiency. Experimental and numerical stress-strain curves are compared for two representative polymers and a representative polymer matrix composite, with the analytical model predicting the experimental response reasonably well. Zheng, Xia-Hua and Goldberg, Robert K. and Binienda, Wieslaw K. and Roberts, Gary D. Glenn Research Center NASA/TM-2003-212583, E-14123, NAS 1.15:212583

Monthly Catalog of United States Government Publications

Author :
Publisher :
ISBN 13 :
Total Pages : 720 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Monthly Catalog of United States Government Publications by :

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2003 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Recueil des actes de la Société de santé de Lyon depuis l'an Ier jusqu'à l'an V de la République, et depuis l'an VI jusqu'à la fin de l'an IX.

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (45 download)

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Book Synopsis Recueil des actes de la Société de santé de Lyon depuis l'an Ier jusqu'à l'an V de la République, et depuis l'an VI jusqu'à la fin de l'an IX. by :

Download or read book Recueil des actes de la Société de santé de Lyon depuis l'an Ier jusqu'à l'an V de la République, et depuis l'an VI jusqu'à la fin de l'an IX. written by and published by . This book was released on 1798 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Equivalent-continuum Modeling of Nano-structured Materials

Author : Gregory M. Odegard
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Equivalent-continuum Modeling of Nano-structured Materials by : Gregory M. Odegard

Download or read book Equivalent-continuum Modeling of Nano-structured Materials written by Gregory M. Odegard and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method has been developed for modeling structure-property relationships of nano-structured materials. This method serves as a link between computational chemistry and solid mechanics by substituting discrete molecular structures with an equivalent-continuum model. It has been shown that this substitution may be accomplished by equating the vibrational potential energy of a nano-structured material with the strain energy of representative truss and continuum models. As an important example with direct application to the development and characterization of single-walled carbon nanotubes, the model has been applied to determine the effective continuum geometry of a graphene sheet. A representative volume element of the equivalent-continuum model has been developed with an effective thickness. This effective thickness has been shown to be similar to, but slightly smaller than, the interatomic spacing of graphite.