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stress-strain relation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060001
EISBN: 978-1-62708-343-0
... ). There is an analogy to the creep process during which diffusion is responsible for time-dependent strain occurring in the direction of the biasing creep stress. Obviously, if no stress is applied, there will be no creep; that is, the material will not change its dimensions with time. Application of stress, however...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
... to composition, microstructure, and heat treatment. It describes the types of environments where magnesium alloys are most susceptible to SCC and the effect of contributing factors such as temperature, strain rate, and applied and residual stresses. The chapter also discusses crack morphology and what it reveals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2021
DOI: 10.31399/asm.tb.ciktmse.t56020001
EISBN: 978-1-62708-389-8
..., and how they respond to applied stresses and strains. The chapter makes extensive use of graphics to illustrate crystal lattice structures and related concepts such as vacancies and interstitial sites, ion migration, volume expansion, antisite defects, edge and screw dislocations, slip planes, twinning...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870105
EISBN: 978-1-62708-344-7
... of a material has a significant effect on which theory best describes its fatigue behavior. crystal structure fatigue life multiaxial fatigue stress-strain relations Introduction Some Important Factors That Govern Fatigue Behavior Stress-Based versus Strain-Based Theories The Stress-Strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040025
EISBN: 978-1-62708-300-3
... testing. aluminum alloys compression test copper alloys flow stress forgeability steels stress-strain relation tensile test titanium alloys torsion test 4.1 Introduction 4.2 Tensile Test 4.3 Compression Test 4.4 Ring Test 4.5 Torsion Test 4.6 Representation of Flow Stress...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870179
EISBN: 978-1-62708-344-7
... that takes into account both the notch effect in altering the stress/strain distribution and maintains the condition that the stress/strain relation is the appropriate stress/strain curve of the material. While the early loadings of a cyclic history may involve some hardening or softening, it is common...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... presents the stress-strain relations for a unidirectional lamina and the constitutive equations for the laminate. 8.3.1 Lamina Stress-Strain Relations On-Axis Stress-Strain Relations Consider the coordinate system of the lamina shown in Fig. 8.5 . The lamina is subjected to generalized in-plane...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... (α f ) and matrix (α m ), Young’s modulus of fiber ( E f ) and matrix ( E m ), and fiber volume fraction ( k f ), through compatibility, the stress-strain relations, the rule of mixtures, and equilibrium of internal forces. Assuming elastic behavior of both fiber and matrix, the cyclic matrix...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
... is the stress normal to the cutting plane and A is the cross-sectional area of the rod. Therefore, in equilibrium: (Eq 1.1b) σ = P / A If we gradually increase the strain of a Hooke solid, the stress is also increased proportionally. The relation of traction to strain is a linear line...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
...-strain relation of materials, commonly referred to as the flow stress curve, is usually obtained by the cylinder compression test. To be applicable without errors or corrections, the cylindrical sample must be upset without any barreling ( Fig. 18.1 ), i.e., a state of uniform stress must be maintained...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870075
EISBN: 978-1-62708-344-7
... to pick is where the elastic and plastic strain ranges are equal. In terms of the life relations, these strain ranges are known as the transition strain range , Δε T . The corresponding life is the transition fatigue life, N T . The net effect of the presence of a mean stress is to change the value...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870325
EISBN: 978-1-62708-344-7
... Fig. 12.28 Tensile loading curves at various life fractions for specimen TH. Source: Ref 12.9 Fig. 12.29 Secant modulus degradation with applied cycles for specimen TH. Source: Ref 12.9 Fig. 12.45 Typical stress-strain and life relations for a cyclically stable metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
... + BX β on log-log coordinates Fig. A.56 Comparison of the cyclic stress-strain curve and inverted relation for 7075-T6 aluminum Fig. A.54 Test components after immersion in hot fluidized bed Fig. A.49 State of stress in torsion Fig. A.27 Schematic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... versus stroke characteristics, have been simulated successfully using the commercial FE software DEFORM (Scientific Forming Technologies Corp.) [ SFTC, 2002 ]. In order to accurately predict the metal flow and forming loads, it is necessary to use reliable input data. The stress-strain relation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... a unit radian about the Z -axis due to the axisymmetric deformation mode. The sheet was meshed with an axisymmetric quadrilateral element, with eight elements along the thickness to capture thickness distribution. The dies were modeled to be rigid, and the stress-strain relation for the deforming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060083
EISBN: 978-1-62708-343-0
... strain-range components. The methods covered include rapid cycling between peak stress extremes, half-cycle rapid loading and unloading, and variations of the incremental step-stress approach. The methods are then compared based on their ability to predict creep-fatigue life. The chapter goes on from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870045
EISBN: 978-1-62708-344-7
..., the transfer should have been easy. Since it was well known that a power-law relation exists between stress and plastic strain, it should easily have been concluded that a power-law relation must also exist between elastic strain range and cyclic life. Thus, an expression relating total strain range to the sum...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870157
EISBN: 978-1-62708-344-7
... establish the relation between nominal elastic stress and fatigue life. Figure 7.2 shows the notation used in the analysis. We assume a surface strain ε s corresponding to a life N S when the full bending moment M is applied. Because it is common to assume that plane sections remain plane...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780199
EISBN: 978-1-62708-281-5
... effect that polymers often undergo at room temperature are also discussed. creep stress relaxation yielding homogeneous polymers yield point elastic modulus AS RELATED PHENOMENA, creep, stress relaxation, and the effect of strain rate on yielding are generally much more significant...