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Author: K.C. Valanis Publisher: ISBN: Category : Deformations (Mechanics) Languages : en Pages : 8
Book Description
"During the past eight years or so, the foundations have been laid for the development of a consistent mathematical theory of the mechanical behavior of visoelastic materials experiencing large deformations. During the same period experimenters have put a great deal of effort into the experimental characterization of the mechanical behavior of such materials. With a few notable exceptions, however, theory and experiment have followed largely independent paths. Experiments have been usually limited to the simple tension test which, because of its inherent simplicity, has been used extensively for the study of uniaxial behavior under diverse histories of deformation such as relaxation, creep, constant strain rate, oscillatory motion, etc. These and to a lesser extent, other experimental results obtained from biaxial test measurements, have been published and it is felt that more will be gained of experimental data are given a rational evaluation in light of the existing general theories. The purpose of this report is to view some experimental results in the light of a constitutive equation, derived from irreversible thermodynamics by Valanis3, but which is a particular form of a very general constitutive equation given earlier by Green and Rivlin. The experimental results constitute biaxial and uniaxial tests on filled natural rubber, carried out by Hutchison at the Jet Propulsion Laboratory."--Introduction.
Author: K.C. Valanis Publisher: ISBN: Category : Deformations (Mechanics) Languages : en Pages : 8
Book Description
"During the past eight years or so, the foundations have been laid for the development of a consistent mathematical theory of the mechanical behavior of visoelastic materials experiencing large deformations. During the same period experimenters have put a great deal of effort into the experimental characterization of the mechanical behavior of such materials. With a few notable exceptions, however, theory and experiment have followed largely independent paths. Experiments have been usually limited to the simple tension test which, because of its inherent simplicity, has been used extensively for the study of uniaxial behavior under diverse histories of deformation such as relaxation, creep, constant strain rate, oscillatory motion, etc. These and to a lesser extent, other experimental results obtained from biaxial test measurements, have been published and it is felt that more will be gained of experimental data are given a rational evaluation in light of the existing general theories. The purpose of this report is to view some experimental results in the light of a constitutive equation, derived from irreversible thermodynamics by Valanis3, but which is a particular form of a very general constitutive equation given earlier by Green and Rivlin. The experimental results constitute biaxial and uniaxial tests on filled natural rubber, carried out by Hutchison at the Jet Propulsion Laboratory."--Introduction.
Author: A. Cemal Eringen Publisher: Academic Press ISBN: 1483276678 Category : Science Languages : en Pages : 635
Book Description
Continuum Physics, Volume II: Continuum Mechanics of Single-Substance Bodies discusses the continuum mechanics of bodies constituted by a single substance, providing a thorough and precise presentation of exact theories that have evolved during the past years. This book consists of three parts—basic principles, constitutive equations for simple materials, and methods of solution. Part I of this publication is devoted to a discussion of basic principles irrespective of material geometry and constitution that are valid for all kinds of substances, including composites. The geometrical notions, kinematics, balance laws, and thermodynamics of continua are also deliberated. Part II focuses on materials consisting of a single substance, followed by a general theory of constitutive equations and special types of bodies. The thermoelastic solids, thermoviscous fluids, and memory-dependent materials are likewise considered. Part III is devoted to a discussion of a variety of nonlinear and linear problems, as well as nonlinear deformations of elastic solids, viscometric fluids, singular surfaces and waves, and complex function technique. This volume is a good source for researchers and students conducting work on the continuum mechanics of single-substance bodies.
Author: Bruno A. Boley Publisher: Springer Science & Business Media ISBN: 3709182441 Category : Science Languages : en Pages : 357
Book Description
The proposal for a Symposium on high temperature effects in solids originated in 1964, at which time a pilot committee, headed by Professor F. K. G. ODQVIST, was formed. Upon the recommendation of this com mittee, a site for the Symposium and a Scientific Organizing Committee were chosen, and some guidelines delineating the field to be covered were established. The Symposium was held at the National Engineering Laboratory in East Kilbride (Glasgow), Scotland, from June 25 to 28, 1968. The Scientific Organizing Committee was composed of the following mem bers: Professor B. A. BOLEY, Chairman (U. S. A.) Professor F. BUCKENS (Belgium) Professor F. K. G. ODQVIST (Sweden) Professor W. OLSZAK (Poland) Professor H. PARKUS (Austria) Dr. D. G. SOPWITH (U. K.) The Local Organizing Committee was subsequently formed; it was direct ed by Dr. SOPWTTH with Mr. R. BRODIE as Secretary, and Mr. C. E. PHILLIPS and Dr. J. GLEN as additional members. It deserves ample praise for excellent arrangements and hospitality. In the discussions concerned with the goals of the Symposium, it was decided that its principal aim should be the presentation of a comprehen sive view of the behavior of solids and structures at high temperature under any type of inelastic regime. It soon became apparent that this was a very wide field, since it would embrace questions ranging from those of basic thermodynamic to those of engineering analysis and design.
Author: J. Busfield Publisher: CRC Press ISBN: 9789058095664 Category : Technology & Engineering Languages : en Pages : 468
Book Description
Recent developments in the modelling of rubber are collated in this volume, including not only stress-strain behaviour and the use of the large strain finite element method for simulation, but also fatigue, fracture, filler reinforcement, dynamic properties and the effects of ageing.
Author: Per-Erik Austrell Publisher: Routledge ISBN: 1351458272 Category : Technology & Engineering Languages : en Pages : 646
Book Description
The unique properties of elastomeric materials offer numerous advantages in many engineering applications. Elastomeric units are used as couplings or mountings between rigid components, for example in shock absorbers, vibration insulators, flexible joints, seals and suspensions, etc. However, the complicated nature of the behaviour of such material makes it difficult to accurately predict the performance of these units using finite element modelling, for example. It is imperative that constitutive models accurately capture relevant aspects of mechanical behaviour. The latest developments concerning constitutive modelling of rubber is collected in these Proceedings. Topics included in this volume are, Hyperelastic models, Strength, fracture & fatigue, Dynamic properties & the Fletcher-Gent effect, Micro-mechanical & statistical approaches, Stress softening, iscoelasticity, Filler reinforcement, and Tyres, fibre & cord reinforced rubber.
Author: Nere Gil-Negrete Publisher: CRC Press ISBN: 1138000728 Category : Technology & Engineering Languages : en Pages : 734
Book Description
Due to their unique properties, rubber materials are found in multiple engineering applications such as tires, engine mounts, shock absorbers, flexible joints, seals, etc. Nevertheless, the complex nature of the behavior of such material makes it difficult to accurately model and predict the performance of these units. The challenge to correctly reproduce the observed characteristics of rubber elements necessitates detailed experimental investigations, development of accurate constitutive models, validation of techniques to identify material parameters and efficient numerical methods. Aspects regarding fatigue and damage in elastomers are not to be left aside, as they influence the durability of the products. State-of-the-art technology in terms of constitutive modeling, numerical implementation, damage and fatigue resistance are strongly represented in these Proceedings, along with insights into advanced elastomers to be used in novel applications. Topics included in this volume are: Ageing, Friction and abrasion, Adhesion, Swelling, Continuum mechanical models and numerical implementation, Hyperelasticity, Micro-mechanical approaches, Fracture and fatigue, Mullins effect, Strain induced crystallization, Thermal effects, Reinforcement and vulcanization, Design and applications, Smart elastomers. Constitutive Models for Rubber VIII is of interest not only for undergraduates, postgraduates, academics and researchers in the discipline, but also for all those design and development engineers in the industry.
Author: K.C. Valanis
Author: K.C. Valanis
Author: Kyriakos C. Valanis
Author: A. Cemal Eringen
Author: Bruno A. Boley
Author: J. Busfield
Author: Iowa State University. Engineering Research Institute
Author: 
Author: Battelle Memorial Institute
Author: Per-Erik Austrell
Author: Nere Gil-Negrete