Search results for: modeling-of-adhesively-bonded-joints

Modeling of Adhesively Bonded Joints

Author : Lucas F. M. da Silva
File Size : 33.30 MB
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A lot of recent developments have been made about adhesively bonded joints modeling using various methods of analysis. The increasing application of adhesives in industry is partly due to the increased sophistication and reliability of adhesive joints modeling. The book proposed intends to provide the designer with the most advanced stress analyses techniques in adhesive joints to reinforce the use of this promising bonding technique.

Advances in Modeling and Design of Adhesively Bonded Systems

Author : S. Kumar
File Size : 74.67 MB
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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.

Advances in Numerical Modeling of Adhesive Joints

Author : Lucas Filipe Martins da Silva
File Size : 26.11 MB
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This book deals with the most recent numerical modeling of adhesive joints. Advances in damage mechanics and extended finite element method are described in the context of the Finite Element method with examples of application. The book also introduces the classical continuum mechanics and fracture mechanics approach and discusses the boundary element method and the finite difference method with indication of the cases they are most adapted to. At the moment there a no numerical technique that can solve any problem and the analyst needs to be aware of the limitations involved in each case.

Hybrid Adhesive Joints

Author : Lucas F. M. da Silva
File Size : 34.23 MB
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This volume presents treat the material science and mechanical issues of hybrid adhesive bonds which are a combination of adhesive bonding rather than mechanical fasteners. The idea of hybrid joints is to gather the advantages of the different techniques leaving out their problems. Some of the advantages of these joints are a higher static and fatigue strength and a higher stiffness with respect to simple joints, a two-stage cracking process before the final failure and improved durability. The book treats all important kinds of joints which are in use today: weld – adhesive, rivet – adhesive, clinch – adhesive, bolt – adhesive, and adhesive – adhesive. A section dedicated to threadlocking and interference-fit adhesive joints is also included. All sections are treated from a scientific point of view with modeling issues supported by simple coupons testing and a technological point of view where the idea is to present more applied results with practical cases.

Strength Prediction of Adhesively Bonded Joints

Author : Raul D. S. G. Campilho
File Size : 28.5 MB
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Adhesively-bonded joints provide many advantages over conventional mechanical fasteners and are increasingly receiving attention as an alternative to mechanical joints in engineering applications. The traditional fasteners usually result in the cutting of fibers and hence the introduction of stress concentrations, both of which reduce structural integrity. By contrast, bonded joints are more continuous and have potential advantages of strength-to-weight ratio, design flexibility, and ease of fabrication. This book provides an overview of available analytical methods as well as numerical methods.

Strength Prediction of Adhesively Bonded Joints

Author : Raul D. S. G. Campilho
File Size : 65.32 MB
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Adhesively-bonded joints provide many advantages over conventional mechanical fasteners and are increasingly receiving attention as an alternative to mechanical joints in engineering applications. The traditional fasteners usually result in the cutting of fibers and hence the introduction of stress concentrations, both of which reduce structural integrity. By contrast, bonded joints are more continuous and have potential advantages of strength-to-weight ratio, design flexibility, and ease of fabrication. This book provides an overview of available analytical methods as well as numerical methods.

The Mechanics of Adhesives in Composite and Metal Joints

Author : Magd Abdel Wahab
File Size : 50.25 MB
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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.

Vibration Isolation Acoustics and Damping in Mechanical Systems

Author : Conor Johnson
File Size : 42.73 MB
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Optimization of Analysis Using VCCT0 9s for Prediction of Failure Initiation of Adhesively Bonded Joints

Author : Silvio Damian Martino
File Size : 52.92 MB
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Adhesively bonded joints are used on numerous applications involving light-weight composite materials. Consequently, the successful modeling and subsequent analysis of bonded joints involving more than one adherend material is crucial for optimization of structural components. An increasing effort to analytically predict the failure strength of adhesively bonded joints has driven the industry0́9s attention to energy methods such as the virtual crack closure technique. This research attempts to optimize the modeling of such joints in order to acquire accurate analytical predictions with a reasonable computational cost. A detail study of the application of virtual crack closure technique in Abaqus® showed the existence of considerable dependence of results accuracy in mesh densities, element type, and mixed mode criteria used for post processing of the results. The investigation reported herein involves the use of Hysol® EA9394 adhesive to bond components made of two different carbon/epoxy materials, as well as aluminum into single lap shear, double lap shear, T pull-off, and thick lap shear specimens. The results of this research are not intended to provide the analyst with exact parameters for constructing a FEM for a bondline and post processing the results. Rather, this paper provides a procedure for optimizing the finite element model in order to maximize the accuracy-tocomputational time ratio. Additionally, a procedure for correlating the analytical results to test data is provided. It is concluded that adhesively bonded joints can be accurately analyzed using VCCT0́9s in Abaqus®, provided the finite element models are developed using the technique described herein for obtaining converged analytical solutions. Finally, the correlation of analytical results to test data is not a trivial task that is achieved utilizing the procedure developed during this research.

Time temperature Effect in Adhesively Bonded Joints

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File Size : 25.81 MB
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Dissertation Abstracts International

Author :
File Size : 22.4 MB
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Fracture of Plastically deforming Adhesively bonded Structures

Author : Ce Sun
File Size : 75.76 MB
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Durability Predictions for Adhesively Bonded Joints in Humid Environments

Author :
File Size : 33.20 MB
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The research objective of this study was to develop an understanding of the cohesive failure of adhesively bonded joints under load an in aggressive environments. Such an understanding could then be used to predict the durability of adhesively bonded joints in humid environments. The problem was to have been approached by first examining the diffusion kinetics and then modeling the deformation and failure behavior as a function temperature and moisture. Although only one adhesive was to have been considered in the study, the first adhesive had to be abandoned mid-way through the program (after its diffusion characteristics had been studied) when creep deformation experiments revealed an unexceptable degree of scatter due to random shear banding After some development, a suitable second adhesive was found, but there was not enough time to completely characterize its diffusion, deformation and failure behavior as a function of temperature and moisture. In the analytical portion of the project, finite element analyses were conducted to optimize various specimens employed in the experimental program. In addition, several thermo-mechanical models for rate-dependent materials with sensitivity to hydrostatic pressure were explored. An extended Prager Drucker plasticity model reproduced the data obtained to date.

Bolted bonded Joints in Polymeric Composites

Author :
File Size : 85.62 MB
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International Aerospace Abstracts

Author :
File Size : 32.64 MB
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A Collection of Technical Papers Structures and design

Author :
File Size : 74.69 MB
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Crashworthiness Occupant Protection and Biomechanics in Transportation Systems

Author :
File Size : 82.29 MB
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Effect of an Adhesive Layer on the Mode I Delamination in Unidirectional CFRP Bonded Joints

Author : Nassima Nasri
File Size : 44.56 MB
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Mots-clés de l'autrice: delamination ; patch repair ; fibre reinforced composite ; cohesive zone model ; fibre bridging ; adhesively bonded joints ; multiscale modeling.

Fatigue and Fracture Mechanics

Author :
File Size : 35.68 MB
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Conference Proceedings

Author : Society of Plastics Engineers. Technical Conference
File Size : 53.73 MB
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