Finite Element Analysis Of Mechanical Behavior Of Frp Concrete Composite Beams

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Nonlinear Finite Element Analysis Of Composite And Reinforced Concrete Beams

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Author : Xiaoshan Lin
language : en
Publisher: Woodhead Publishing
Release Date : 2019-10-18

Nonlinear Finite Element Analysis Of Composite And Reinforced Concrete Beams written by Xiaoshan Lin and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-18 with Architecture categories.

Nonlinear Finite Element Analysis of Composite and Reinforced Concrete Beams presents advanced methods and techniques for the analysis of composite and FRP reinforced concrete beams. The title introduces detailed numerical modeling methods and the modeling of the structural behavior of composite beams, including critical interfacial bond-slip behavior. It covers a new family of composite beam elements developed by the authors. Other sections cover nonlinear finite element analysis procedures and the numerical modeling techniques used in commercial finite element software that will be of particular interest to engineers and researchers executing numerical simulations. Gives advanced methods and techniques for the analysis of composite and fiber Reinforced Plastic (FRP) and reinforced concrete beams Presents new composite beam elements developed by the authors Introduces numerical techniques for the development of effective finite element models using commercial software Discusses the critical issues encountered in structural analysis Maintains a clear focus on advanced numerical modeling

Shear Strengthening Of T Beam With Gfrp

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Author : Kishor Chandra Panda
language : en
Publisher: Springer
Release Date : 2018-04-27

Shear Strengthening Of T Beam With Gfrp written by Kishor Chandra Panda and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-27 with Technology & Engineering categories.

This book presents a systematic approach to the experimental, theoretical, and numerical investigation of reinforced concrete (RC) T-beams strengthened in shear with glass-fibre-reinforced polymers (GFRP) with variation in transverse steel reinforcements. It discusses experiments conducted on simply supported RC T-beams for control beams with and without transverse steel reinforcements and beams strengthened in shear with GFRP sheets and strips in different configurations, orientations, and variation of layers for each type of stirrup spacing. The book also includes a detailed numerical study using ANSYS performed in two stages. The first stage consists of selecting and testing relevant materials in the laboratory to establish the physical and mechanical properties of the materials. The second stage then involves testing beams for shear under two-point static loading systems. The test results demonstrate the advantage of using an externally applied, epoxy-bonded GFRP sheets and strips to increase the shear capacity of the beams. The finite element method (FEM) analysis results verify the experimental results. The book will serve as a valuable resource for researchers and practicing civil engineers alike.

Study Of The Response Of Fiber Reinforced Polymeric Composite Beam Under Dynamic Loading And Hygrothermal Sic Environment

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Author : Bahubali Chandrashekar Kagi
language : en
Publisher:
Release Date : 2006

Study Of The Response Of Fiber Reinforced Polymeric Composite Beam Under Dynamic Loading And Hygrothermal Sic Environment written by Bahubali Chandrashekar Kagi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

[Author's abstract] Fiber reinforced polymeric (FRP) composites are beginning to find applications in constructing infrastructures such as bridges, railroads, etc. Composites may potentially be more durable replacements for steel and concrete, but their experience in these applications is minimal. Also, composite decks are susceptible to change in environmental conditions. Thus, the study of the behavior of composite material in elevated environmental conditions is necessary. This thesis is aimed at development and validation of Finite element methods used to analyze Fiber reinforced polymeric composite beam under moisture and elevated temperature change. The response of the composite beam subjected to various loads is analyzed under dry and moist conditions. It is assumed that only the matrix properties are adversely affected. The mechanical properties such as stiffness, strength, etc are degraded due to the combined effect of moisture and temperature change. The laminate properties are calculated using the rule of mixtures. A parametric study is carried out by varying the fiber volume fraction and by changing the fiber orientations and ply lay-ups in the laminate. From results it can be observed that the static and dynamic deflections increase due to the presence of moisture and increased temperature. The behavior of the beam is also influenced by the ply orientations and fiber volume fraction. Thus, for composite materials to reach their full potential in structural applications, it becomes quite imperative to consider factors such as moisture content, temperature, ply orientations and fiber volume during design and analysis.

Numerical Analysis Of Debonding Mechanisms Of Externally Bonded Frp Reinforcement In Rc Beams

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Author : Michael Cohen
language : en
Publisher:
Release Date : 2018

Numerical Analysis Of Debonding Mechanisms Of Externally Bonded Frp Reinforcement In Rc Beams written by Michael Cohen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Concrete-filled tubes categories.

There is an urgent need to develop economic and efficient methods to repair and strengthen existing reinforced concrete structures. This demand is motivated by several factors including the aging of concrete structures, the desire to upgrade design standards, and the exposure to severe environmental effects. A particular problem confronting engineers in repairing deteriorated structures is the rehabilitation of reinforced concrete elements. Conventionally, steel plates were utilized to restore and enhance the tensile strength of damaged concrete members. Despite the effectiveness of this practice in terms of improving the structural capacity, it is still considered disadvantageous due to the excessive weight of steel and its susceptibility to corrosion in moist environments. The application of fibre reinforced polymer (FRP) to existing reinforced concrete structures has gained the interest of many researchers in the last few decades. These materials are superior to steel when it comes to comparing the resistance to electrochemical corrosion, strength-to-weight ratio, ease of handling, fatigue resistance, and availability in any length or shape. However, there is still a serious concern regarding the effect of premature debonding of the FRP plates before reaching the desired strength or ductility. This debonding can initiate from the ends of the plate or can be induced by intermediate cracks in the concrete member. Although the end-plate debonding and peeling mechanisms have been studied extensively, there is still a significant lack of data for FRP-strengthened beams in which intermediate crack-induced debonding is the dominant failure mode. On the other hand, the interfacial bond capacity between the concrete and the FRP composite has not been thoroughly investigated. Whereas, there is still need to study the effect of some of the mechanical and physical parameters on the bond strength of FRP-Concrete interface. Moreover, researchers have also shown a keen interest in simulating flexural cracks in concrete beams, and examine their effect on the debonding mechanisms of FRP materials. However, more realistic approach is needed to model cracks and account for their growth. In this study, a three-dimensional nonlinear finite element model was developed for simulating the flexural behaviour of RC beams externally bonded with FRP systems. The ABAQUS/CAE software version 6.14-2 was used for this purpose. This numerical analysis was performed based on a comprehensive experimental program conducted by Brena et al. (2003). The simulated RC beams were categorized in two groups: Control Beams (without fibre) and CFRP Beams (with carbon fibre reinforced polymer). During the process of constructing the CFRP beam models, two distinct procedures were followed to simulate the interface between the concrete and the externally attached FRP laminates. Perfect bond was assumed in the first approach, and a Cohesive Zone Model (CZM) was adopted in the second approach. In the latter, cohesive surface technique was implemented in the ABAQUS model through the use of traction-separation law. Despite the lack of quantitative evaluation in the literature as no similar techniques was attempted by others, the results of this numerical analysis were only compared with experimental findings, and the proposed models were found to be reliable. A parametric study was performed to investigate the influence of various parameters on the flexural capacity of the proposed beam model, and the debonding behaviour of the externally attached FRP laminate. This analysis was conducted by either changing the mechanical properties of some of the constitutive materials (e.g. concrete and reinforcing steel), or altering the geometrical and mechanical properties of the FRP reinforcement. It was then found that the effect of internal steel reinforcement ratio has the most impact on beam ultimate capacity. While changing the FRP bond length beyond a certain value bears no effect on beam strength. Moreover, the numerical model was modified to review the effect of intermediate crack spacings on the overall beam performance. A discrete crack approach was adopted to replicate crack propagation throughout the body of the beam. This technique has shown an approximately 30% improvement in the prediction capacity of this model when compared to a similar specimen in which smeared crack approach is used. The results of this analysis showed that the debonding behaviour of FRP laminates is largely influenced by crack spacing. In addition, the results have also indicated that the initiation of FRP micro-debonding was prolonged as crack spacings were decreased. This response can be attributed to the abrasion effect within the FRP-Concrete interface. Finally, this numerical analysis provides a relatively reliable guidance on the application and the mitigation of externally bonded FRP reinforcement in concrete beams. The predictive capability of the proposed FE models ensures their suitableness for further investigations of FRP effectiveness in civil engineering field.

Introduction To Composite Materials Design Second Edition

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Author : Ever J. Barbero
language : en
Publisher: CRC Press
Release Date : 2010-07-07

Introduction To Composite Materials Design Second Edition written by Ever J. Barbero and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-07 with Technology & Engineering categories.

Presenting a wealth of completely revised examples and new information, Introduction to Composite Materials Design, Second Edition greatly improves on the bestselling first edition. It incorporates state-of-the-art advances in knowledge and design methods that have taken place over the last 10 years, yet maintains the distinguishing features and vital content of the original. New material in this second edition: Introduces new background topics, including design for reliability and fracture mechanics Revises and updates information on polymer matrices, modern fibers (e.g., carbon nanotubes, Basalt, Vectran) and fiber forms such as textiles/fabrics Includes new information on Vacuum Assisted Resin Transfer Molding (VARTM) Incorporates major advances in prediction of unidirectional-lamina properties Reworks sections on material failure, including the most advanced prediction and design methodologies, such as in situ strength and Mohr-Coulomb criterion, etc. Covers all aspects of preliminary design, relegating finite element analysis to a separate textbook Discusses methodology used to perform damage mechanics analysis of laminated composites accounting for the main damage modes: longitudinal tension, longitudinal compression, transverse tension, in-plane shear, and transverse compression Presents in-depth analysis of composites reinforced with plain, twill, and satin weaves, as well as with random fiber reinforcements Expands the analysis of thin walled beams with newly developed examples and MATLAB® code Addresses external strengthening of reinforced-concrete beams, columns, and structural members subjected to both axial and bending loads The author distributes 78 fully developed examples throughout the book to illustrate the application of presented analysis techniques and design methodology, making this textbook ideally suited for self-study. Requiring no more than senior undergraduate-level understanding of math and mechanics, it remains an invaluable tool for students in the engineering disciplines, as well as for self-studying, practicing engineers.

Mechcomp2

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Author : Antonio J.M. Ferreira
language : en
Publisher: Società Editrice Esculapio
Release Date : 2016-05-20

Mechcomp2 written by Antonio J.M. Ferreira and has been published by Società Editrice Esculapio this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-20 with Technology & Engineering categories.

Composites materials have aroused a great interest over the last few decades. Several applications of fibrous composites, functionally graded materials, laminated composites, nano-structured reinforcements, morphing structures, can be found in many engineering fields, such as aerospace, mechanical, naval and civil engineering. The necessity of lightweight structures, smart and adaptive systems, high-level strength, have led both the academic research and the manufacturing development to a recurring employment of these materials. Many journal papers and technical notes have been published extensively over the last seventy years in international scientific journals of different engineering fields. For this reason, the establishment of this second edition of Mechanics of Composites International Conference has appeared appropriate to continue what has been begun during the first edition occurred in 2014 at Stony Brook University (USA). MECHCOMP wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures. As a proof of this event, which has taken place in Porto (Portugal), selected plenary and key-note lectures have been collected in the present book.

Finite Element Analysis Of Bond Characteristics At The Frp Concrete Interface

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Author : Mani Balazadeh Minouei
language : en
Publisher:
Release Date : 2014

Finite Element Analysis Of Bond Characteristics At The Frp Concrete Interface written by Mani Balazadeh Minouei and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

"Reinforced concrete structures are prone to corrosion in harsh environments. Fibre-Reinforced Polymer (FRP) laminates are more resistant than steel elements, such as bars and plate in aggressive environments; they can be used as a barrier to protect concrete structures; however, poor bond between FRP composite laminates and structural concrete can prevent utilizing the full structural and protective capacity of FRP-concrete composite system, therefore, it is important to develop good bond between concrete and the FRP to ensure the integrity and durability of the FRP-concrete system. There is a need to understand the bond characteristics at the FRP laminates-concrete interface, and the various parameters influencing the bond performance of the composite system. This research program consists of numerical modeling of the double lap pull-off tests conducted by Ali et.al (2012) and comparing the computed values with the experimental results for two different batches, along with an evaluation of the various parameters influencing bond between FRP laminates and concrete. The ABAQUS 6.10.1 program was used to model the double lap pull-off test. Shell elements were used to model FRP laminates, solid elements for concrete and steel and cohesive elements for modeling the epoxy joint. The constitutive models for the materials were selected based on their experimental behavior. A linear elastic model was used for modeling FRP laminates and steel, elastoplastic behavior was used for modeling epoxy and damaged plasticity model was used for modeling concrete.Numerical and experimental curves reflected similar responses. In the first batch the average ultimate load in the tests was 70.7 kN , while the ultimate load for the numerical analysis was 73.8 kN, showing a difference of 4.6% . Also, the average experimental value of strain at the center of the FRP laminate was 2657x[(10)]^(-6), while the ultimate strain in numerical simulation was 3023x[(10)]^(-6), showing an acceptable difference of 12.1 %. In the second batch, the average of experimental ultimate load was 54.5kN, while the ultimate load in numerical analysis was 58.6kN, with a difference of only 5.4%. The computed ultimate strain is 2320 x[(10)]^(-6), while the average of ultimate strain in experimental study was 2173x[(10)]^(-6), showing a discrepancy of 6.3%. Also, the effect of different geometrical factors on the bond behavior of FRP and concrete was studied; it was concluded that, the most effective geometrical parameter influencing bond between FRP and concrete was the bonded width of the FRP laminate." --

Stability And Failure Of High Performance Composite Structures

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Author : Shamsher Bahadur Singh
language : en
Publisher: Springer Nature
Release Date : 2022-07-05

Stability And Failure Of High Performance Composite Structures written by Shamsher Bahadur Singh and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-05 with Technology & Engineering categories.

This book is written to introduce the application of high-performance composite materials such as fiber reinforced polymers, functionally graded composites, and sustainable fiber reinforced composites for development of thin-walled plated structures, beams, girders, and deck structures subjected to different kinds of loads. This book also includes test cases and its validation with finite element method using general purpose commercial computer software. Moreover, the book also deals with design methodology of advanced composite materials based on different applications. The comprehensive overview of the state-of-the-art research on the high-performance composite structures dealing with their stability, response, and failure characteristics will be of significant interest to scientists, researchers, students, and engineers working in the thrust area of advanced composite structures. This book is also helpful for Ph.D. candidates for developing their fundamental understanding on high-performance composite structures, and it will also appropriate for master- and undergraduate-level courses on design of composite structures especially for Civil Engineering Infrastructures.

Advances In Frp Composites In Civil Engineering

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Author : Lieping Ye
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-02-01

Advances In Frp Composites In Civil Engineering written by Lieping Ye and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-01 with Technology & Engineering categories.

"Advances in FRP Composites in Civil Engineering" contains the papers presented at the 5th International Conference on Fiber Reinforced Polymer (FRP) Composites in Civil Engineering in 2010, which is an official conference of the International Institute for FRP in Construction (IIFC). The book includes 7 keynote papers which are presented by top professors and engineers in the world and 203 papers covering a wide spectrum of topics. These important papers not only demonstrate the recent advances in the application of FRP composites in civil engineering, but also point to future research endeavors in this exciting area. Researchers and professionals in the field of civil engineering will find this book is exceedingly valuable. Prof. Lieping Ye and Dr. Peng Feng both work at the Department of Civil Engineering, Tsinghua University, China. Qingrui Yue is a Professor at China Metallurgical Group Corporation.

Introduction To Composite Materials Design

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Author : Ever J. Barbero
language : en
Publisher: CRC Press
Release Date : 2017-10-25

Introduction To Composite Materials Design written by Ever J. Barbero and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-25 with Technology & Engineering categories.

The third edition of Introduction to Composite Materials Design is a practical, design-oriented textbook aimed at students and practicing engineers learning analysis and design of composite materials and structures. Readers will find the third edition to be both highly streamlined for teaching, with new comprehensive examples and exercises emphasizing design, as well as complete with practical content relevant to current industry needs. Furthermore, the third edition is updated with the latest analysis techniques for the preliminary design of composite materials, including universal carpet plots, temperature dependent properties, and more. Significant additions provide the essential tools for mastering Design for Reliability as well as an expanded material property database.