Strain Hardening And Interaction Effects On The Growth Of Voids In Ductile Fracture

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Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture

Author : Dennis Michael Tracey
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture by : Dennis Michael Tracey

Download or read book Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture written by Dennis Michael Tracey and published by . This book was released on 1968 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth and coalescence of voids is a common mechanism of fracture in ductile materials. Analytical work on the problem to date has dealt mainly with isolated voids in perfectly plastic materials, so that strain hardening and interactions between neighboring voids have been neglected. These features of void growth are examined here, but only for a simple geometrical configuration. In particular, the growth of single infinitely long cylindrical voids in bodies of rigid-plastic, strain-hardening material is considered. Bodies with both finite and infinite dimensions normal to the void surface are included in the analysis. The exact relation among the pertinent variables: transverse stress, axial strain, hardening coefficient, void strain and void growth rate is presented. Solution via a bounding technique is given for two general cases. The first case is that of an imposed constant void growth rate and the second case is an imposed constant transverse stress. The results show a decelerating effect of hardening on void growth. Application to the ductile fracture problem of void growth in the neck of a tensile specimen demonstrates the accelerating effect of void growth due to interactions between voids. (Author).

Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture

Author : D. M. Tracey
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (643 download)

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Book Synopsis Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture by : D. M. Tracey

Download or read book Strain-hardening and Interaction Effects on the Growth of Voids in Ductile Fracture written by D. M. Tracey and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Effect of Pre-strain and Strain Path Changes on Ductile Fracture

Author : Yaser Alinaghian
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (871 download)

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Book Synopsis The Effect of Pre-strain and Strain Path Changes on Ductile Fracture by : Yaser Alinaghian

Download or read book The Effect of Pre-strain and Strain Path Changes on Ductile Fracture written by Yaser Alinaghian and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial metal forming operations generally require several deformation steps in order to create the final product. The mechanical behavior of materials undergoing strain path changes can be very different from those deformed in a given direction to fracture. The work presented here employed laser drilled model materials to better understand the effect of pre-strains and strain path changes on void growth and linkage leading to fracture is studied. The experimental results show that increasing pre-strain results in faster void growth which was justified in terms work hardening rate in the sample. Scanning electron microscope images revealed that the ductility of the sample decreased with increasing pre-strain but only slightly compared to the large decrease in far field strain at failure. This suggests that pre-strain affects strain localization significantly and to a lesser extent the ductility. Finally a finite element model has been built to predict the linkage between voids.

Ductile Fracture and Ductility

Author : Bradley Dodd
Publisher : Academic Press
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Ductile Fracture and Ductility by : Bradley Dodd

Download or read book Ductile Fracture and Ductility written by Bradley Dodd and published by Academic Press. This book was released on 1987 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Void/Pore Distributions and Ductile Fracture

Author : E. M. Dubensky
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Void/Pore Distributions and Ductile Fracture by : E. M. Dubensky

Download or read book Void/Pore Distributions and Ductile Fracture written by E. M. Dubensky and published by . This book was released on 1985 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of void or pore distributions on ductile fracture has been modeled experimentally. Pores or voids are physically modeled in two dimensions by both random and regular arrays of equi-sized holes drilled through the thickness of tensile specimens of 1100-0 Al sheet and 7075-T6 Al plate and sheet. Fracture strains as well as failure paths have been determined for different hole sizes, spacings, and area fractions. A statistical analysis of the data indicates that increasing the minimum hole spacing, which decreases the degree of hole clustering, increases both strength and ductility. Conversely, decreasing the hole size causes a minor increase in both strength and ductility. Increasing the rate of work hardening is beneficial to ductility in that a high strain hardening rate appears to increase the resistance to flow localization between holes. The results are discussed in terms of a fracture process which depends on shear localization between holes/voids and which is very sensitive to void/pore distributions. Keywords: Fracture, Porosity, Voids.

Ductile Fracture in Metal Forming

Author : Kazutake Komori
Publisher : Academic Press
ISBN 13 : 0128147733
Total Pages : 296 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Ductile Fracture in Metal Forming by : Kazutake Komori

Download or read book Ductile Fracture in Metal Forming written by Kazutake Komori and published by Academic Press. This book was released on 2019-10-11 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ductile Fracture in Metal Forming: Modeling and Simulation examines the current understanding of the mechanics and physics of ductile fracture in metal forming processes while also providing an approach to micromechanical ductile fracture prediction that can be applied to all metal forming processes. Starting with an overview of different ductile fracture scenarios, the book then goes on to explain modeling techniques that predict a range of mechanical phenomena that can lead to ductile fracture. The challenges in creating micromechanical models are addressed alongside methods of applying these models to several common metal forming processes. This book is suitable for researchers working in mechanics of materials, metal forming, mechanical metallurgy, and plasticity. Engineers in R&D industries involved in metal forming such as manufacturing, aerospace, and automation will also find the book very useful. - Explains innovative micromechanical modeling techniques for a variety of material behaviors - Examines how these models can be applied to metal forming processes in practice, including blanking, arrowed cracks in drawing, and surface cracks in upset forging - Provides a thorough examination of both macroscopic and microscopic ductile fracture theory

Fracture Mechanics

Author : Dominique P. Miannay
Publisher : Springer Science & Business Media
ISBN 13 : 1461217407
Total Pages : 356 pages
Book Rating : 4.4/5 (612 download)

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Book Synopsis Fracture Mechanics by : Dominique P. Miannay

Download or read book Fracture Mechanics written by Dominique P. Miannay and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for engineers from a variety of disciplines dealing with structural materials, this text describes the current state of knowledge. It begins by describing the fracture process at the two extremes of scale: first in the context of atomic structures, then in terms of a continuous elastic medium. Treating the fracture process in increasingly sophisticated ways, the book then considers plastic corrections and the procedures for measuring the toughness of materials. Practical considerations are then discussed, including crack propagation, geometry dependence, flaw density, mechanisms of failure by cleavage, the ductile-brittle transition, and continuum damage mechanics. The whole is rounded off with discussions of generalised plasticity and the link between the microscopic and macroscopic aspects, and problems are provided at the end of each chapter.

High Strain-Rate and Quasi-Static Ductile Failure Mechanisms in Porous Materials

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis High Strain-Rate and Quasi-Static Ductile Failure Mechanisms in Porous Materials by :

Download or read book High Strain-Rate and Quasi-Static Ductile Failure Mechanisms in Porous Materials written by and published by . This book was released on 1999 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An inelastic rate-dependent crystalline constitutive formulation and specialized computational schemes have been developed and used to obtain a detailed understanding of the interrelated physical mechanisms that can result in ductile material failure in rate-dependent porous crystalline materials subjected to finite inelastic deformations. The effects of void growth and interaction and specimen necking on material failure have been investigated for a single material cell, with a discrete cluster of four voids, where geometrical parameters have been varied to result in seven unique periodic and random void arrangements. The interrelated effects of void distribution and geometry, strain hardening, geometrical softening, localized plastic strains and slip-rates, and hydrostatic stresses on failure paths and ligament damage in face centered cubic (f.c.c.) crystalline materials have been studied. Results from this study are consistent with experimental observations that ductile failure can occur either due to void growth parallel to the stress axis, which results in void coalescence normal to the stress axis, or void interaction along bands, which are characterized by intense shear-strain localization and that intersect the free surface at regions of extensive specimen necking.

Mechanics of Material Behavior

Author : G.J. Dvorak
Publisher : Elsevier
ISBN 13 : 1483289788
Total Pages : 394 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Mechanics of Material Behavior by : G.J. Dvorak

Download or read book Mechanics of Material Behavior written by G.J. Dvorak and published by Elsevier. This book was released on 2016-04-20 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies in Applied Mechanics, Volume 6: Mechanics of Material Behavior provides information pertinent to the fundamental aspects of the mechanics of material behavior. This book discusses the theory of plasticity and its application to the design of engineering components and structures. Organized into 24 chapters, this volume begins with an overview of the concept of material stability, which provided a unified approach for the derivation of stress–strain relations for the plastic behavior of metals. This text then examines the general equation for the plane-stress condition of orthotropic sheet material that is isotropic in its plane. Other chapters consider the developments in plasticity as applied to soil mechanics, with emphasis on applications to earthquake-induced landslide problems. This book discusses as well the restrictions on a hypothesized quasi-statically propagating planar surface. The final chapter deals with the effects of fiber orientation, delamination length, and ply thickness on the interlaminar fracture. This book is a valuable resource for engineers.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1124 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

On the Ductile Enlargement of Voids in Triaxial Stress Fields

Author : J. R. Rice
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis On the Ductile Enlargement of Voids in Triaxial Stress Fields by : J. R. Rice

Download or read book On the Ductile Enlargement of Voids in Triaxial Stress Fields written by J. R. Rice and published by . This book was released on 1968 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Studies in Large Plastic Flow and Fracture

Author : Percy Williams Bridgman
Publisher : Cambridge : Harvard University Press
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Studies in Large Plastic Flow and Fracture by : Percy Williams Bridgman

Download or read book Studies in Large Plastic Flow and Fracture written by Percy Williams Bridgman and published by Cambridge : Harvard University Press. This book was released on 1964 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Materials

Author : Gerry Janicki
Publisher : Society for the Advancement of Material & Process Engineering
ISBN 13 :
Total Pages : 1202 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Advanced Materials by : Gerry Janicki

Download or read book Advanced Materials written by Gerry Janicki and published by Society for the Advancement of Material & Process Engineering. This book was released on 1993 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fracture and Fatigue

Author : Lawrence J. Broutman
Publisher : Elsevier
ISBN 13 : 1483216713
Total Pages : 485 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Fracture and Fatigue by : Lawrence J. Broutman

Download or read book Fracture and Fatigue written by Lawrence J. Broutman and published by Elsevier. This book was released on 2016-06-15 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite Materials, Volume 5: Fracture and Fatigue covers the concepts, theories, and experiments on fracture and fatigue behavior of composite materials. The book discusses the fracture of particulate composites, including metal, polymer, and ceramic matrices; relates micromechanics effects to composite strength; and summarizes the various theories relating constituent properties and microstructure to fracture. The text also describes differing theories regarding the strength and fracture of composites; and the theory and experiment relating to time-dependent fracture covering both long-term as well as dynamic fracture. The fatigue of both polymer- and metal-matrix composites and the factors influencing the toughness of both brittle and ductile matrix composites are also considered. Design engineers, materials scientist, materials engineers, and metallurgists will find the book useful.

Recent Advances in Experimental Mechanics

Author : E.E. Gdoutos
Publisher : Springer Science & Business Media
ISBN 13 : 0306484102
Total Pages : 834 pages
Book Rating : 4.3/5 (64 download)

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Book Synopsis Recent Advances in Experimental Mechanics by : E.E. Gdoutos

Download or read book Recent Advances in Experimental Mechanics written by E.E. Gdoutos and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 71 papers presented at the symposium on “Recent Advances in Experimental Mechanics” which was organized in honor of Professor Isaac M. Daniel. The symposium took place at Virginia Polytechnic Institute and State University on th June 23-28, 2002, in conjunction with the 14 US National Congress of Applied Mechanics. The book is a tribute to Isaac Daniel, a pioneer of experimental mechanics and composite materials, in recognition of his continuous, original, diversified and outstanding contributions for half a century. The book consists of invited papers written by leading experts in the field. It contains original contributions concerning the latest developments in experimental mechanics. It covers a wide range of subjects, including optical methods of stress analysis (photoelasticity, moiré, etc.), composite materials, sandwich construction, fracture mechanics, fatigue and damage, nondestructive evaluation, dynamic problems, fiber optic sensors, speckle metrology, digital image processing, nanotechnology, neutron diffraction and synchrotron radiation methods. The papers are arranged in the following nine sections: Mechanical characterization of material behavior, composite materials, fracture and fatigue, optical methods, n- destructive evaluation, neutron diffraction and synchrotron radiation methods, hybrid methods, composite structures, and structural testing and analysis.

Applied Mechanics Reviews

Author :
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.:/5 (26 download)

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Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Mathematical Theory of Plasticity

Author : Rodney Hill
Publisher : Oxford University Press
ISBN 13 : 9780198503675
Total Pages : 370 pages
Book Rating : 4.5/5 (36 download)

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Book Synopsis The Mathematical Theory of Plasticity by : Rodney Hill

Download or read book The Mathematical Theory of Plasticity written by Rodney Hill and published by Oxford University Press. This book was released on 1998 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1950, this important and classic book presents a mathematical theory of plastic materials, written by one of the leading exponents.