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Monday, July 27, 2020 | History

2 edition of Rupture phenomena in viscoelastic materials found in the catalog.

Rupture phenomena in viscoelastic materials

Wolfgang Gustav Knauss

Rupture phenomena in viscoelastic materials

by Wolfgang Gustav Knauss

  • 260 Want to read
  • 7 Currently reading

Published by California Institute of Technology in Pasadena, Calif .
Written in English


Edition Notes

Statementby Wolfgang Gustav Knauss.
Classifications
LC ClassificationsMLCM 84/1041 (T)
The Physical Object
Pagination162 leaves : ill. ; 30 cm.
Number of Pages162
ID Numbers
Open LibraryOL2894016M
LC Control Number84120607

Namely, the books study problems in fields such as viscoelasticity of fractional order, lateral vibrations of a rod of fractional order type, lateral vibrations of a rod positioned on fractional order viscoelastic foundations, diffusion-wave phenomena, heat conduction, wave propagation, forced oscillations of a body attached to a rod, impact. This book fits a one-semester graduate course on the properties, analysis, and uses of viscoelastic materials. Those familiar with the author's precursor book, Viscoelastic Solids, will see that this book contains many updates and expanded coverage of the materials science, causes of viscoelastic behavior, properties of materials of biological /5(2).

Purchase Rheology V2 - 1st Edition. Print Book & E-Book. ISBN , Stress Rupture Tests •Determines the time necessary for material to result in failure under a overload. •Useful in materials selection where dimensional tolerances are acceptable, but rupture cannot be tolerated. •Generally performed at elevated temperatures. •Smooth, notched, flat specimens or samples of any combination can be tested.

In considering why creep rupture occurs so frequently, a major contributing cause is the general lack of awareness of the effects of time on polymeric materials, particularly at the design stage. Designing and manufacturing plastic components offers unique challenges compared with other materials. Students are introduced to the concept of viscoelasticity and some of the material behaviors of viscoelastic materials, including strain rate dependence, stress relaxation, creep, hysteresis and preconditioning. Viscoelastic material behavior is compared to elastic solids and viscous fluids. Students learn about materials that have viscoelastic behavior along with the importance of .


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Rupture phenomena in viscoelastic materials by Wolfgang Gustav Knauss Download PDF EPUB FB2

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): It is a pleasure to express my appreciation to Professor M.

Williams for suggesting this interesting problem area and for his valuable comments, especially during the latter stages of this work. I wish to thank Dr. Landel of the California Institute of Technology Jet Propulsion Laboratory for making his.

A failure theory for high polymers is developed from the hypothesis that weak regions Rupture phenomena in viscoelastic materials book in the material. Defects nucleate in these regions through bond rupture until the defects reach a size which is critical for the applied boundary loading.

Viscoelastic Materials - by Roderic Lakes April Urbanska, Marta Winzi, Maria Neumann, Katrin Abuhattum, Shada Rosendahl, Philipp Müller, Paul Taubenberger, Anna Anastassiadis, Konstantinos and Guck, Jochen Rupture phenomena in viscoelastic materials.

By Wolfgang Gustav Knauss. Get PDF (11 MB) Abstract. A failure theory for high polymers is developed from the hypothesis that weak regions exist in the material. \ud By considering the relaxation of the polymer chain in terms of the phenomenological stress-strain behavior and the rupture of Author: Wolfgang Gustav Knauss.

Rupture Phenomena in Viscoelastic Materials", Ph,D. Dissertation, California Institute of Technology. By Wolfgang Gustav Knauss. Abstract. It is a pleasure to express my appreciation to Professor M. Williams for suggesting this interesting problem area and for his valuable comments, especially during the latter stages of this work.

I Author: Wolfgang Gustav Knauss. 1 Introduction: Phenomena Viscoelastic phenomena Motivations for study Transient properties: creep and relaxation Viscoelastic functions J(t), E(t) Solids and liquids; anelastic materials Dynamic response to sinusoidal load Demonstration of viscoelastic behavior Historical aspects Summary Examples.

Examples and Applications of Viscoelastic Materials Some of the properties of viscoelastic materials are their ability to creep, recover, undergo stress relaxation and absorb energy.

Some examples of these phenomena are discussed in this section1. Creep and Recovery The disks in the human spine are Size: 21KB. Knauss WG () Rupture phenomena in viscoelastic materials. Ph.D. Thesis, California Institute of Technology, Pasadenas CA Knauss WG () The time dependent fracture of viscoelastic by: 1 Introduction: Phenomena Viscoelastic phenomena Transient properties: creep and relaxation Solids and liquids; anelastic materials Dynamic response to sinusoidal load Demonstration of viscoelastic behavior Other works on viscoelasticity Historical aspects Summary 2 Constitutive relations Introduction Prediction of the response of linearly viscoelastic materials.

In the viscoelastic case, neck formation is predicted for a material that is subjected to long time creep under a constant engineering stress, the stress level being above a certain minimum value.

The various experimental results presented in the chapter strongly suggests that the instability leading to neck formation is associated with the nonlinearity of the mechanical behavior coupled with the time dependence.

The first part of the book reviews the modelling of viscoelastic and viscoplastic behaviour as a way of predicting performance and service life. Part two discusses techniques for modelling creep rupture and failure. The final part of the book discusses ways of testing and predicting long-term creep and fatigue in polymer matrix composites.

Onaran, K. and Findley, W.N., “Combined Stress Experiments on a Nonlinear Viscoelastic Material to Determine the Kernel Functions for a Multiple Integral Representation of Creep”, Transactions of the Society of Rheology, Issue 2 (), p. Google Scholar. The Phenomena of Rupture and Flow in Solids Book.

Full-text available Fracture models addressing crack propagation in viscoelastic materials typically draw on cohesive force distributions. manently (as with viscoelastic materials) or permanently (as with plastic materials).

hookean Materials and Short-range forces The first class of materials is exemplified among biological materials by bone and shell (chapter 6), by the cellulose of plant cell walls (chapter 3), by the cell wallsFile Size: KB.

Application of Thermodynamics to Thermomechanical, Fracture, and Birefringent Phenomena in Viscoelastic Media (McGraw‐Hill Book Company, Inc., New York, ).

“Rupture Phenomena in Viscoelastic Materials,” Ph.D. thesis, California Institute of Technology, Pasadena, California (). Cited by: This book fits a one-semester graduate course on the properties, analysis, and uses of viscoelastic materials.

Those familiar with the author's precursor book, Viscoelastic Solids, will see that this book contains many updates and expanded coverage of the materials science, causes of viscoelastic behavior, properties of materials of biological Missing: Rupture phenomena.

phenomena (stress decrease in viscoelastic material under constant strain) while Kelvin Chain is the preferred model for the description of Creep phenomena (strain increase under constant stress).2 As in concrete creep phenomena are the most widely observed and.

Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing s materials, like water, resist shear flow and strain linearly with time when a stress is applied. Elastic materials strain when stretched and immediately return to their original state once the stress is removed.

Understanding viscoelasticity is pertinent to design applications as diverse as earplugs, gaskets, computer disks, satellite stability, medical diagnosis, injury prevention, vibration abatement, tire performance, sports, spacecraft explosions, and music.

This book fits a one-semester graduate course on the properties, analysis, and uses of viscoelastic materials. Viscoelastic materials are defined in section and some everyday viscoelastic materials and phenomena are discussed in section The basic mechanical models of viscoelasticity, the Maxwell and Kelvin models, are introduced in sectionas is the general differential equation form of the linear viscoelastic law.

The hereditary integralFile Size: KB. Ep22 Mechanical properties of polymers & viscoelastic models NANO UCSD Darren Lipomi - Duration: Darren Lip views.A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.The scaling theory for rupture of entangled polymeric liquids, which is based on a critical recoverable strain [Joshi, Y.

M., and M. M. Denn, J. Rheol. 47, – ()], is extended to include the viscoelastic regime, where the total strain at rupture is a decreasing function of the elongation rate.

Rupture can be predicted in both the viscoelastic and rubbery regimes using the scaling Cited by: