Visco-plastic Behavior of New Materials

Visco-plastic Behavior of New Materials PDF Author: American Society of Mechanical Engineers. Winter Annual Meeting
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 162

Get Book Here

Book Description

Visco-plastic Behavior of New Materials

Visco-plastic Behavior of New Materials PDF Author: American Society of Mechanical Engineers. Winter Annual Meeting
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 162

Get Book Here

Book Description


Creep and Fatigue in Polymer Matrix Composites

Creep and Fatigue in Polymer Matrix Composites PDF Author: Rui Miranda Guedes
Publisher: Woodhead Publishing
ISBN: 0081026021
Category : Technology & Engineering
Languages : en
Pages : 590

Get Book Here

Book Description
Creep and Fatigue in Polymer Matrix Composites, Second Edition, updates the latest research in modeling and predicting creep and fatigue in polymer matrix composites. The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a way of predicting performance and service life. Final sections discuss techniques for modeling creep rupture and failure and how to test and predict long-term creep and fatigue in polymer matrix composites. - Reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites - Puts a specific focus on viscoelastic and viscoplastic modeling - Features the time-temperature-age superposition principle for predicting long-term response - Examines the creep rupture and damage interaction, with a particular focus on time-dependent failure criteria for the lifetime prediction of polymer matrix composite structures that are illustrated using experimental cases

Viscoelastic and Viscoplastic Materials

Viscoelastic and Viscoplastic Materials PDF Author: Mohamed El-Amin
Publisher: BoD – Books on Demand
ISBN: 9535126024
Category : Science
Languages : en
Pages : 376

Get Book Here

Book Description
This book introduces numerous selected advanced topics in viscoelastic and viscoplastic materials. The book effectively blends theoretical, numerical, modeling and experimental aspects of viscoelastic and viscoplastic materials that are usually encountered in many research areas such as chemical, mechanical and petroleum engineering. The book consists of 14 chapters that can serve as an important reference for researchers and engineers working in the field of viscoelastic and viscoplastic materials.

Unified Constitutive Equations for Creep and Plasticity

Unified Constitutive Equations for Creep and Plasticity PDF Author: A.K. Miller
Publisher: Springer Science & Business Media
ISBN: 9400934394
Category : Technology & Engineering
Languages : en
Pages : 351

Get Book Here

Book Description
Constitutive equations refer to 'the equations that constitute the material response' at any point within an object. They are one of the ingredients necessary to predict the deformation and fracture response of solid bodies (among other ingredients such as the equations of equilibrium and compatibility and mathematical descriptions of the configuration and loading history). These ingredients are generally combined together in complicated computer programs, such as finite element analyses, which serve to both codify the pertinent knowledge and to provide convenient tools for making predictions of peak stresses, plastic strain ranges, crack growth rates, and other quantities of interest. Such predictions fall largely into two classes: structural analysis and manufacturing analysis. In the first category, the usual purpose is life prediction, for assessment of safety, reliability, durability, and/or operational strategies. Some high-technology systems limited by mechanical behavior, and therefore requiring accurate life assess ments, include rocket engines (the space-shuttle main engine being a prominent example), piping and pressure vessels in nuclear and non-nuclear power plants (for example, heat exchanger tubes in solar central receivers and reformer tubes in high-temperature gas-cooled reactors used for process heat applications), and the ubiquitous example of the jet engine turbine blade. In structural analysis, one is sometimes concerned with predicting distortion per se, but more often, one is concerned with predicting fracture; in these cases the informa tion about deformation is an intermediate result en route to the final goal of a life prediction.

Viscoelastic Materials

Viscoelastic Materials PDF Author: Roderic S. Lakes
Publisher: Cambridge University Press
ISBN: 052188568X
Category : Science
Languages : en
Pages : 481

Get Book Here

Book Description
This graduate text on viscoelastic materials addresses design applications as diverse as earplugs, computer disks and medical diagnostics.

Unit Manufacturing Processes

Unit Manufacturing Processes PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309176670
Category : Technology & Engineering
Languages : en
Pages : 228

Get Book Here

Book Description
Manufacturing, reduced to its simplest form, involves the sequencing of product forms through a number of different processes. Each individual step, known as an unit manufacturing process, can be viewed as the fundamental building block of a nation's manufacturing capability. A committee of the National Research Council has prepared a report to help define national priorities for research in unit processes. It contains an organizing framework for unit process families, criteria for determining the criticality of a process or manufacturing technology, examples of research opportunities, and a prioritized list of enabling technologies that can lead to the manufacture of products of superior quality at competitive costs. The study was performed under the sponsorship of the National Science Foundation and the Defense Department's Manufacturing Technology Program.

Viscoelasticity

Viscoelasticity PDF Author: Wilhelm Flügge
Publisher: Springer Science & Business Media
ISBN: 3662022761
Category : Technology & Engineering
Languages : en
Pages : 204

Get Book Here

Book Description
No mathematical theory can completely describe the complex world around us. Every theory is aimed at a certain class of phenomena, formulates their essential features, and disregards what is of minor importance. The theory meets its limits of applicability where a dis regarded influence becomes important. Thus, rigid-body dynamics describes in many cases the motion of actual bodies with high accu racy, but it fails to produce more than a few general statements in the case of impact, because elastic or anelastic deformation, no matter how local or how small, attains a dominating influence. For a long time mechanics of deformable bodies has been based upon Hooke's law - that is, upon thE" assumption of linear elasticity. It was well known that most engineering materials like metals, con crde, wood, soil, are not linearly elastic or, are so within limits too narrow to cover tne range of pl'actical intcrest. Nevertheless, almost all routine stress analysis is still based on Hooke T s law be cause of its simplicity. In the course of time engineers have become increasingly con scious of the importance of the anelastic behavior of many materials, and mathematical formulations have been attempted and applied to practical problems. Outstanding among them are the theories of ide ally plastic and of viscoelastic materials. While plastic behavior is essentially nonlinear (piecewise linear at best), viscoelasticity, like elasticity, permits a linear theory. This theory of linear visco elasticity is the subject of tbe present book.

Mechanical Behavior of Materials

Mechanical Behavior of Materials PDF Author: Marc A. Meyers
Publisher:
ISBN: 9780511573422
Category : Strength of materials
Languages : en
Pages : 856

Get Book Here

Book Description
Includes numerous examples and problems for student practice, this textbook is ideal for courses on the mechanical behaviour of materials taught in departments of mechanical engineering and materials science.

Unified Plasticity for Engineering Applications

Unified Plasticity for Engineering Applications PDF Author: Sol R. Bodner
Publisher: Springer
ISBN: 9781461351283
Category : Science
Languages : en
Pages : 0

Get Book Here

Book Description
Considerably simplified models of macroscopic material behavior, such as the idealization for metals of elastic-time independent plastic response with a yield (onset) criterion, have served the engineering profession well for many years. They are still basic to the design and analysis of most structural applications. In the need to use materials more effectively, there are circumstances where those traditional models are not adequate, and constitutive laws that are more physically realistic have to be employed. This is especially relevant to conditions where the inherent time dependence of inelastic deformations, referred to as "viscoplasticity", is pronounced such as at elevated temperatures and for high strain rates. Unified theories of elastic-viscoplastic material behavior, which are primarily applicable for metals and metallic alloys, combine all aspects of inelastic response into a set of time dependent equations with a single inelastic strain rate variable. For such theories, creep under constant stress, stress relaxation under constant strain, and stress-strain relations at constant rates are each special cases of a general formulation. Those equations mayor may not include a yield criterion, but models which do not separate a fully elastic region from the overall response could be considered "unified" in a more general sense. The theories have reached a level of development and maturity where they are being used in a number of sophisticated engineering applications. However, they have not yet become a standard method of material representation for general engineering practice.

Plasticity Theory

Plasticity Theory PDF Author: Jacob Lubliner
Publisher: Courier Corporation
ISBN: 0486318206
Category : Technology & Engineering
Languages : en
Pages : 548

Get Book Here

Book Description
The aim of Plasticity Theory is to provide a comprehensive introduction to the contemporary state of knowledge in basic plasticity theory and to its applications. It treats several areas not commonly found between the covers of a single book: the physics of plasticity, constitutive theory, dynamic plasticity, large-deformation plasticity, and numerical methods, in addition to a representative survey of problems treated by classical methods, such as elastic-plastic problems, plane plastic flow, and limit analysis; the problem discussed come from areas of interest to mechanical, structural, and geotechnical engineers, metallurgists and others. The necessary mathematics and basic mechanics and thermodynamics are covered in an introductory chapter, making the book a self-contained text suitable for advanced undergraduates and graduate students, as well as a reference for practitioners of solid mechanics.