關於 plastic strain ，我們在網路上蒐集到這些相關的討論、資訊與評價

#11. True Total Strain to Effective Plastic Strain - d3VIEW

For relatively small hardening, both methods should yield identical plastic strains but significant hardening, using an instantaneous elastic strain as opposed ...

#12. Plasticity in Uniaxial Stress State

In other applications, especially those involving hand calculations or beam analysis, it is customary to assume an elastic-perfectly plastic stress strain ...

#13. Elastic-Plastic Deformation at Finite Strains | J. Appl. Mech.

In some circumstances, elastic-plastic deformation occurs in which both components of strain are finite. Such situations fall outside the scope of classical ...

#14. Elastoplastic Material Models - COMSOL Documentation

A yield criterion serves to define the stress condition under which plastic deformation occurs. Stress paths inside the yield surface result in purely ...

#15. Plastic Strain Ratio - Instron

Plastic strain ratio r is a measure of the ability of a sheet metal to resist thinning or thickening when subjected to a tensile or compressive force.

#16. Effects of plastic strain and strain path on youngs modulus of ...

These sheets are firstly deformed to different plastic strains under a few strain paths from balanced biaxial stretching to uniaxial tension. Then, a small ...

#17. nglos324 - plasticdeformation

The plastic deformation strain-hardened (work-hardened) the material, increasing its dislocation density and increasing the yield stress. From ...

#18. elastic-plastic strain acceptance criterion for structures subject ...

Plastic Strain Magnitude. Elastic-plastic analysis criterion strain limits are established as functions of the material ultimate strain.

#19. 5.2.3 Defining plasticity in ABAQUS

Strains associated with plastic deformation are called plastic strains. Even after yielding, the elastic strains continue to increase according to the original ...

#20. Plastic strain measurement

Strain measurement of plastics. Plastics are avaialble in many kinds and common in low elasticity, low heat-conductivity and large linear expansion coefficient.

#21. Constitutive Model for Equivalent Stress-Plastic Strain Curves ...

for Equivalent Stress-Plastic Strain. Curves Including Full-Range Strain. Hardening Behavior of. High-Strength Steel at Elevated.

#22. Low Cycle Fatigue Life Assessment Based on the ... - NCBI

By introducing the non-linear stress-strain relationship, the deformation energy theory is applied to calculate the accumulation plastic strain ...

#23. Cyclic Plastic Strain Energy and Fatigue of Metals

At high cyclic stresses, repeated plastic strain is the predominant cause of energy dissipation in metals. Damping due to cyclic plastic strain energy may ...

#24. Plastic strain rate in granular materials as a function of stress ...

The plastic strain rates of materials subjected to repeated cyclic stresses are defined by two states: (1) the post-compaction phase and (2) the shakedown state ...

#25. Plastic Deformation and Strain Hardening - 博客來

書名：Plastic Deformation and Strain Hardening，語言：英文，ISBN：9780878499069，作者：Kettunen, Pentti O. (EDT)，出版日期：2003/05/01，類別：自然科普.

#26. The theory of combined plastic and elastic deformation with ...

In certain problems of plastic flow, for example, a thick tube expanded by internal pressure, it is important to consider changes in the elastic strain of ...

#27. Chapter 3: Plastic Deformation: Strain and Strain Rate

Plastic deformation is caused microscopically either by the slip or twinning of atomic layers. These operations do not change the volume of the metal, which ...

#28. Equivalent plastic strain for the Hill's yield criterion under ...

In this thesis, a derivation of the equivalent plastic strain for plane stress in matrix notation is presented using associated plastic flow and work ...

#29. Effective plastic strain - LS-DYNA support

Effective plastic strain is a monotonically increasing scalar value which is calculated incrementally as a function of (Dp)ij, the plastic component of the ...

#30. Modelling and simulation of plastic deformation on small scales

in plastic strain and a viscoplastic interface law for monotonous loading. In paper C, a framework of finite element equations is formulated, of.

#31. Measuring the Plastic Strain Ratio of Sheet Metals - iMechanica

Measuring the Plastic Strain Ratio of Sheet Metals by. Richard Gedney. ADMET, Inc. Norwood, MA 02062. Tel: 781-769-0850 www.ADMET.com.

#32. Using XRD elastic and plastic strain data to evaluate the ...

X-ray diffraction is a direct method for measuring elastic strains. Diffraction peak widths are an indication of plastic strain. Elastic and plastic strains ...

#33. Inserting plastic strain of a material - Ansys Learning Forum

At yield stress you already have 0,2% plastic strain (definition of yield strength). Using this as zero plastic strain will give you a discontinuous stress- ...

#34. Plastic strain Definition & Meaning - Dictionary.com

Strain in which the distorted body does not return to its original size and shape after the deforming force has been removed. See more at strain.

#35. Reduced partitioning of plastic strain for strong and yet ductile ...

When a material that contains precipitates is deformed, the precipitates and the matrix may strain plastically by different amounts causing ...

#36. plastic strain ratio Archives - AHSS Guidelines

R-Value, The Plastic Anisotropy Ratio. The r-value, which is also called the Lankford coefficient or the plastic strain ratio, is the ratio of the true width ...

#37. Measurement of plastic strain and plastic strain rate ... - HAL

The aim of this paper is to present a methodology to measure plastic strain and strain rate during orthogonal machining under plane strain ...

#38. A Consistent Relationship between the Stress and Plastic ...

On the one hand, as for the nature of deformation of metal materials, plastic strain components should be highlighted because the elastic strain ...

#39. Metal Properties: Plastic Strain Ratio (r-Value)

The r-value, also called the Lankford coefficient or plastic strain ratio, provides a measure of a metal alloy.

#40. definition of plastic strain by The Free Dictionary

Strain in which the distorted body does not return to its original size and shape after the deforming force has been removed. American Heritage® Dictionary of ...

#41. Plastic strain is generally ______ times the elastic strain.

Plastic strain : Strain in which the distorted body does not return to its original size and shape after the deforming force has been removed ...

#42. Plastic strain-induced phase transformations in silicon: drastic ...

Plastic strain -induced phase transformations in silicon: drastic reduction of transformation pressures, change in transformation sequence, and ...

#43. Stress-Strain Curve of Common Metallic Materials - Plasticity

Macroscopic plastic deformation: stress-strain-curve in tensile tests. Engineering strain, engineering stress. Elastic deformation: stiffness/compliance.

#44. Highly sensitive, durable and stretchable plastic strain sensors ...

Thin-film “plastic” strain sensors can be mounted closely on textile clothing or human skin comfortably to detect human activities without any harm to the ...

#45. Introduction - DoITPoMS

Figure 1: The true stress-strain curve of a crystal. During plastic deformation, the total strain of a metal is the sum of the elastic and plastic strain.

#46. Plastic Deformation - Meaning, Mechanisms and Examples

Plastic Deformation is the permanent alteration of shape, form or texture of a material due to the action of stress. In other words, it's the change of shape ...

#47. Flow Theory of Plasticity - Homepages

strain hardening. The yield criterion will change with the further development of plastic deformation. We assume that the yield criterion accounting for the ...

#48. A note on construction of the equivalent plastic strain increment

Strain hardening plastic deformation of a material possessing a yield locus which may be written as a homogeneous function of the stress components, ...

#49. Strain - Strength ( Mechanics ) of Materials - Engineers Edge

Plastic deformation (or plastic strain) is a dimensional change that does not disappear when the initiating stress is removed. It is usually accompanied by ...

#50. Detection of plastic strain using GNSS data of pre- and post ...

The viscous deformation and the plastic deformation are collectively called inelastic deformation. As shown in Eqs. (1)–(3), crustal deformation ...

#51. An Approximate Method for Calculating Elastic–Plastic Stress ...

[12] proposed a new unified expression based on the thermodynamic analysis of cyclic plastic deformation. The authors used this solution with ...

#52. What is the difference between a strain and a permissible ...

Plastic strain is irreversible strain that when a certain amount of force applied is no more there its effect persists. It can be compared to elastic ...

#53. Local plastic strain evolution in a high strength dual-phase steel

The evolution of local plastic deformation in a dual-phase (DP) steel has been studied using Digital Image Correlation (DIC) and in-situ tensile testing inside ...

#54. Theory of Plastic Deformation - Byju's

Plastic deformation is defined as a process in which the object due to applied force changes its size or shape in a way that is not reversible. Plastic ...

#55. plastic strain larger than total strain? (Page 2) / Code_Aster ...

Plastic strain EPSP is calculated from engineering strain, but total strain EPSG is from green strain. Now if I look on the total engineering ...

#56. 12.4 Elasticity and Plasticity | University Physics Volume 1

We referred to the proportionality constant between stress and strain as the ... The material undergoes plastic deformation for loads large enough to cause ...

#57. ELASTIC AND PLASTIC STRAIN PROPERTIES OF SAND

ELASTIC AND PLASTIC STRAIN PROPERTIES OF SAND. The hydrostatic compression test and repeated loading test on medium sand, with two different dry unit ...

#58. On the Plastic Strain Accumulation in Notched Bars During ...

An unexpected accumulation of plastic strain is observed to occur, within the high-temperature creep dwell. This phenomenon has been observed during several ...

#59. Effects of Plastic Strain on Mechanical and Electrical ...

The quantitative relation between electrical resistivity and plastic strains was extracted from experiments. The understanding of the role of ...

#60. Severe Plastic Deformation of Metals :: Total Materia Article

Abstract: Severe Plastic Deformation (SPD) is a constituent of metal forming processes which is primarily used to introduce ultra-high plastic strain into a ...

#61. Stress Relaxation and the Plastic Deformation of Solids

plastic deformation in solids, and details are given in the paper. ... the plastic strain rate experienced by the specimen is io. If at that moment taken.

#62. Concrete plastic-damage factor for finite element analysis

stress–strain are mainly resulted from the micro- cracks.11 The stiffness degradation of concrete is often associated with plastic deformation, ...

#63. The Propagation of Plastic Deformation in Solids*

case where the impact velocity is large enough to produce plastic strain. The theory gives a method for com- puting the stress distribution along the bar at ...

#64. Elongation at Break or Fracture Strain - Omnexus - SpecialChem

Polymer Name Min Value (%) Max Value (%) ABS ‑ Acrylonitrile Butadiene Styrene 10.0 50.0 ABS Flame Retardant 2.0 80.0 ABS High Heat 2.0 100.0

#65. The plastic strain and the rolling direction dependence of the ...

The plastic strain and the rolling direction dependence of the traditional and the biaxial r-values. Á Zs Hoffmann 1 and G J Béres 1. Published under licence by ...

#66. Ultrasonic Measurement of Plastic Strain in Pipelines

The ultrasonic methods being developed under this project utilize electromagnetic acoustic transducers (EMATS) for measuring residual stress and plastic strain ...

#67. Plastic Deformation of Metals - Plastometrex

Plastic deformation of metals most commonly occurs as a result of the glide of dislocations, driven by shear stresses.

#68. Mapping pure plastic strains against locally applied stress

The deformation of all materials can be separated into elastic and plastic parts. Measuring the purely plastic component is complex but ...

#69. How to determine plastic strain rate - Physics Stack Exchange

First, I'm going to define some notation. I prefer the direct notation of modern continuum mechanics as presented in this book by Gurtin et ...

#70. What is Plastic Deformation of Metal - YENA Engineering

Plastic deformation in metals develops by predominantly shearing, which means sliding of lattice planes over each other by allowing macroscopic changes without ...

#71. Measuring the plastic strain ratio of sheet metals - ADMET

The plastic strain ratio, r, is considered a direct measure of sheet metal's drawability and is useful for evaluating materials intended for forming shapes.

#72. Relations for Time-Dependent Plastic Deformation in Metals

J . R. Rice, "On the Structure of Stress- Strain Relations for Time-Dependent. Plastic Deformation in Metals", Journal of Applied Mechanics, 37, 1970,.

#73. 4.2. Rate-Independent Plasticity - BME-MM

Plastic Strain Increment. If the equivalent stress computed using elastic properties exceeds the material yield, then plastic straining must occur. Plastic ...

#74. 14.1.2. Neuber Plastic Strain Method

It can be seen that the actual area under the elasto-plastic stress-strain curve is greater than the triangle given by the Neuber stress level and so this ...

#75. Constitutive laws - 3.7 Rate independent plasticity

During plastic loading, the principal components of the plastic strain rate tensor are parallel to the components of stress acting on the solid. This sounds ...

#76. The role of plastic strain gradients in the crack growth ...

(2010), cleavage can occur if the stress elevation due to plastic strain gradients is sufficient to attain the ideal strength. This mechanism is ...

#77. Plastic strain increment in low-carbon steel

The evolution of macroscopically localized plastic strain at various stages of strain hardening is visua- lized via a digital image speckle correlation (DIC) ...

#78. Characterization and Modeling of Non-Linear Behavior of ...

Often the yield point, the maximum of the stress strain curve, is assumed to be synonymous with the onset of plastic deformation. This concept is erroneous, as ...

#79. Strain-Based Acceptance Criteria for Spent Fuel Storage and ...

capability of absorbing large amounts of energy via plastic deformation. Because the accident conditions that generally govern the designs, ...

#80. Study on the definition of equivalent plastic strain under non ...

the elastic limit and plastic strain rate direction independently. Then, the hardening of yield function and the direction of.

#81. Cyclic plastic deformation tests to verify FEM-based ...

allowable thermal stress range being exceeded, the accumulated plastic strain has to be limited. With these approximation methods, plastic infl-.

#82. An Overview on the Continuous Severe Plastic Deformation ...

Severe plastic deformation (SPD) processes are attributed to those of metal forming in which the high shear deformation is imposed on the material at the high ...

#83. 8.1 Introduction to Plasticity

elastic recovery. The strain which remains upon unloading is the permanent plastic deformation. If the material is now loaded again, the force- ...

#84. Mechanics of the rate-dependent elastic–plastic deformation ...

A physically based constitutive model for large strain deformation of thermo- plastics was then extended to encompass high-rate conditions. The model accounts ...

#85. Plasticity and Deformation Process

Flow or incremental strain theory: Increments of plastic strain ΔεP are related to increments of plastic stress ΔσP by the tangent modulus which is a.

#86. Elastic/Plastic Deformation - NDE-Ed.org

Elastic/Plastic Deformation. When a sufficient load is applied to a metal or other structural material, it will cause the material to change shape.

#87. 10-1 CHAPTER 10 DEFORMATION 10.1 Stress-Strain ...

DEFORMATION. 10.1 Stress-Strain Diagrams and Material Behavior. 10.2 Material Characteristics. 10.3 Elastic-Plastic Response of Metals.

#88. 3.5: Plastic Deformation of Polymers - GlobalSpec

3.5.1 Stress Strain Curves ... At a microscopic level, deformation in polymers involves stretching and rotating of molecular bonds. More commonly, one ...

#89. A new method for determination of plastic deformation ...

Therefore, the deformation forces can be measured by strain gauge without any ringing effect. The plastic deformation behavior of materials can ...

#90. Since the introductory lecture was some time ago, and we only ...

Note that the flow rule gives the sign of the plastic strain increment but not its magnitude (lambda). By plastic deformation, the position or size of the ...

#91. Strain gages for plastics and composite materials

Good strain gages (DMS) are characterized by high reliability of the measurement results obtained with them.

#92. Abaqus - How to apply initial conditions as plastic strain?

This part of code works in case of Stresses but not for plastic strains... The calculation presents no errors, abaqus runs but when i check ...

#93. Stress Vs Plastic Strain NX Nastran - SIEMENS Community

Femap supports other solutions and solvers that do use plastic strain. For example, SOL 601 Advanced nonlinear can use that plastic strain function.

#94. Characteristics of plasticity in ductile metals

However, once the stress in the metal exceeds the yield stress, permanent (inelastic) deformation begins to occur. The strains associated with this permanent ...

#95. A cyclic elasto-plastic constitutive model for sand considering ...

Three points are incorporated into the model: a new flow rule, a cumulative strain-dependent characteristic of the plastic shear modulus and a ...

#96. Cyclic Stress-Strain and Plastic Deformation Aspects of ...

To check this interpretation , attempts were made to strain cycle speci- mens at still lower strains . However , closed - loop control on the plastic strain ...