Finite Element Modeling of Structural Adhesives Using Nonlinear Viscoelastic Analysis PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Finite Element Modeling of Structural Adhesives Using Nonlinear Viscoelastic Analysis PDF full book. Access full book title Finite Element Modeling of Structural Adhesives Using Nonlinear Viscoelastic Analysis by Sreesh Kumar Inguva. Download full books in PDF and EPUB format.
Author: Sreesh Kumar Inguva
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
"Finite element modeling techniques for studying mechanical properties of nonlinear viscoelastic structural adhesives are presented here. Long term mechanical properties of the Ashland Urethane and Araldite Epoxy adhesive systems have been studied. The stress and strain based modified free volume theories developed at the University of Texas-Austin are verified by using them to model the nonlinear material properties of the aforementioned viscoelastic adhesives. The modified free volume theories work on the fundamental assumption that all viscoelastic material nonlinearities are dependent on free volume and that they can be captured entirely in a nonlinear shift factor definition. These shift factor definitions incorporate parameters to model the nonlinearities observed in shear dominated loading. Ashland Urethane and Araldite Epoxy were modeled using the stress and strain based approaches respectively. The modified free volume theories were incorporated into the NOVA-3D finite element analysis code, which was then used to simulate uniaxial tensile tests and biaxial Arcan tests. In an effort to analyze the effects of such adhesives on the overall mechanical properties of bonded structures, the effect of cohesive crack growth within a finite thickness adhesive layer was studied. Strain energy release rates for stationary cracks in double cantilever beam (DCB) specimens were modeled for the purpose of comparison with published data. Strain energy release rates for a DCB specimen made out of viscoelastic urethane and epoxy adhesives were computed for comparison with exact solution"--Abstract, leaf iii
Author: Sreesh Kumar Inguva
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
"Finite element modeling techniques for studying mechanical properties of nonlinear viscoelastic structural adhesives are presented here. Long term mechanical properties of the Ashland Urethane and Araldite Epoxy adhesive systems have been studied. The stress and strain based modified free volume theories developed at the University of Texas-Austin are verified by using them to model the nonlinear material properties of the aforementioned viscoelastic adhesives. The modified free volume theories work on the fundamental assumption that all viscoelastic material nonlinearities are dependent on free volume and that they can be captured entirely in a nonlinear shift factor definition. These shift factor definitions incorporate parameters to model the nonlinearities observed in shear dominated loading. Ashland Urethane and Araldite Epoxy were modeled using the stress and strain based approaches respectively. The modified free volume theories were incorporated into the NOVA-3D finite element analysis code, which was then used to simulate uniaxial tensile tests and biaxial Arcan tests. In an effort to analyze the effects of such adhesives on the overall mechanical properties of bonded structures, the effect of cohesive crack growth within a finite thickness adhesive layer was studied. Strain energy release rates for stationary cracks in double cantilever beam (DCB) specimens were modeled for the purpose of comparison with published data. Strain energy release rates for a DCB specimen made out of viscoelastic urethane and epoxy adhesives were computed for comparison with exact solution"--Abstract, leaf iii
Author: S. Kumar
Publisher: John Wiley & Sons
ISBN: 1118754077
Category : Technology & Engineering
Languages : en
Pages : 219
Get Book Here
Book Description
The book comprehensively charts a way for industry to employ adhesively bonded joints to make systems more efficient and cost-effective Adhesively bonded systems have found applications in a wide spectrum of industries (e.g., aerospace, electronics, construction, ship building, biomedical, etc.) for a variety of purposes. Emerging adhesive materials with improved mechanical properties have allowed adhesion strength approaching that of the bonded materials themselves. Due to advances in adhesive materials and the many potential merits that adhesive bonding offers, adhesive bonding has replaced other joining methods in many applications. Containing nine articles written by world-renowned experts, the book deals with the advances in theoretical and computational modeling as well as the design and experimental aspects of adhesively bonded structural systems. Stress analysis and strength prediction of adhesively bonded structural systems, considering a range of material models under a variety of loading conditions, are discussed. Finite element modeling using macro-elements is elaborated on. Recent developments in modeling and experimental aspects of bonded systems with graded adhesive layers and dual adhesives are described. Simulation of progressive damage in bonded joints is addressed. A novel vibration-based approach to detect disbonding and delamination in composite joints is also discussed. Readership The book is central to a range of engineers including mechanical, reliability, construction and surface engineers as well as materials scientists who are engaged in the mechanics of structural adhesive joints. Industries that will use this book include aerospace, electronics, biomedical, automotive, ship building, and construction.
Author: K. L. Mittal
Publisher: John Wiley & Sons
ISBN: 1394175582
Category : Technology & Engineering
Languages : en
Pages : 484
Get Book Here
Book Description
Structural Adhesives Uniquely provides up-to-date and comprehensive information on the topic in an easily-accessible form. A structural adhesive can be described as a high-strength adhesive material that is isotropic in nature and bonds two or more parts together in a load-bearing structure. A structural adhesive material must be capable of transmitting the stress/load without loss of structural integrity within design limits. There are many types of established structural adhesives, including epoxy, urethane, acrylic, silicone, etc. Structural Adhesives comprises nine chapters and is divided into two parts: Part 1, Preparation, Properties, and Characterization; Part 2, Applications. The topics covered include: structural epoxy adhesives; biological reinforcement of epoxies as structural adhesives; marble dust reinforced epoxy structural adhesive composites; characterization of various structural adhesive materials; effects of shear and peel stress distributions on the behavior of structural adhesives; the inelastic response of structural aerospace adhesives; structural reactive acrylic adhesives: their preparation, characterization, properties, and applications; application of structural adhesives in composite connections; and naval applications of structural adhesives. Audience This book should be of much use and interest to adhesionists, materials scientists, adhesive technologists, polymer scientists, and those working in the construction, railway, automotive, aviation, bridge, and shipbuilding industries.
Author: Magd Abdel Wahab
Publisher: DEStech Publications, Inc
ISBN: 1605950963
Category : Technology & Engineering
Languages : en
Pages : 226
Get Book Here
Book Description
Scientific background and practical methods for modeling adhered joints Tools for analyzing stress, fracture, fatigue crack propagation, thermal, diffusion and coupled thermal-stress/diffusion-stress, as well as life prediction of joints Book includes access to downloadable macrofiles for ANSYS This text investigates the mechanics of adhesively bonded composite and metallic joints using finite element analysis, and more specifically, ANSYS, the basics of which are presented. The book provides engineers and scientists with the technical know-how to simulate a variety of adhesively bonded joints using ANSYS. It explains how to model stress, fracture, fatigue crack propagation, thermal, diffusion and coupled field analysis of the following: single lap, double lap, lap strap/cracked lap shear, butt and cantilevered beam joints. Readers receive free digital access to a variety of input and program data, which can be downloaded as macrofiles for modeling with ANSYS.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1006
Get Book Here
Book Description
Author: M. A. Rochefort
Publisher:
ISBN:
Category : Adhesives
Languages : en
Pages : 136
Get Book Here
Book Description
Measurements of the nonlinear viscoelastic behavior of two adhesives, FM-73 and FM-300, are presented and discussed. Analytical methods to quantify the measurements are given and fitted into a framework of an accelerated testing and analysis procedure. The single integral model used is shown to function well and is analogous to a time-temperature stress-superposition procedure (TTSSP). Advantages and disadvantages of the method accessed with the latter residing primarily with the nature of the creep power law which is utilized.
Author: Pouria Hajikarimi
Publisher: Springer Nature
ISBN: 9819917867
Category : Science
Languages : en
Pages : 170
Get Book Here
Book Description
Viscoelasticity is a complicated theorem that is generally used in several aspects of material characterization and modeling of polymers, resins, fiber-reinforced composites, bituminous composites, etc. On the other hand, the heterogeneous nature of composites like asphalt concrete and fiber-reinforced polymers has motivated lots of researchers to investigate the mechanical and rheological properties of these materials. This book mainly consists of the theory and application of viscoelastic materials used for construction. It starts with a comprehensible presentation of the theory of linear and nonlinear viscoelasticity. Wherein, the application of viscoelastic equations and principles on constructional viscoelastic composite materials considering time, temperature, loading rate dependency, and heterogeneity of composite substances is highlighted. The principles and equations of the viscoelasticity theorem are presented in several books, but here it is tried to present them more understandable and straightforwardly. This helps in solving real problems of heterogeneous composite materials, especially those which are used in construction. Moreover, the fundamental experiments for characterizing the elastic and viscoelastic properties of fibrous and bituminous composites are introduced and summarized. Then after, some analytical and empirical formulations for deriving the material properties of composites from the properties of the basic constituents are presented. These are followed by numerical simulation techniques using the finite element method to simulate composite materials.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1148
Get Book Here
Book Description
Author: Robert D. Adams
Publisher: Woodhead Publishing
ISBN: 0323851436
Category : Technology & Engineering
Languages : en
Pages : 828
Get Book Here
Book Description
Adhesive Bonding: Science, Technology and Applications, Second Edition guides the reader through the fundamentals, mechanical properties and applications of adhesive bonding. This thoroughly revised and expanded new edition reflects the many advances that have occurred in recent years. Sections cover the fundamentals of adhesive bonding, explaining how adhesives and sealants work, and how to assess and treat surfaces, how adhesives perform under stress and the factors affecting fatigue and failure, stress analysis, environmental durability, non-destructive testing, impact behavior, fracture mechanics, fatigue, vibration damping, and applications in construction, automotive, marine, footwear, electrical engineering, aerospace, repair, electronics, biomedicine, and bonding of composites. With its distinguished editor and international team of contributors, this book is an essential resource for industrial engineers, R&D, and scientists working with adhesives and their industrial applications, as well as researchers and advanced students in adhesion, joining, polymer science, materials science and mechanical engineering. Offers detailed, methodical coverage of the fundamentals, mechanical properties and industrial applications of adhesive bonding Enables the successful preparation of adhesives for a broad range of important load-bearing applications in areas such as automotive and aerospace, construction, electronics and biomedicine Covers the latest advances in adhesive bonding, including improved repair techniques for metallic and composite structures, cohesive zone modeling, and disassembly and recycling
Author: Ahmed K. Noor
Publisher: Elsevier
ISBN: 1483145646
Category : Mathematics
Languages : en
Pages : 472
Get Book Here
Book Description
Computational Methods in Nonlinear Structural and Solid Mechanics covers the proceedings of the Symposium on Computational Methods in Nonlinear Structural and Solid Mechanics. The book covers the development of efficient discretization approaches; advanced numerical methods; improved programming techniques; and applications of these developments to nonlinear analysis of structures and solids. The chapters of the text are organized into 10 parts according to the issue they tackle. The first part deals with nonlinear mathematical theories and formulation aspects, while the second part covers computational strategies for nonlinear programs. Part 3 deals with time integration and numerical solution of nonlinear algebraic equations, while Part 4 discusses material characterization and nonlinear fracture mechanics, and Part 5 tackles nonlinear interaction problems. The sixth part discusses seismic response and nonlinear analysis of concrete structure, and the seventh part tackles nonlinear problems for nuclear reactors. Part 8 covers crash dynamics and impact problems, while Part 9 deals with nonlinear problems of fibrous composites and advanced nonlinear applications. The last part discusses computerized symbolic manipulation and nonlinear analysis software systems. The book will be of great interest to numerical analysts, computer scientists, structural engineers, and other professionals concerned with nonlinear structural and solid mechanics.
