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elastic stress

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Published: 30 August 2021
Fig. 42 Elastic von Mises stress contours (in pounds per square inch) from finite-element analysis at 1.3 MPa (190 psi) internal pressure More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0090114
EISBN: 978-1-62708-229-7
... Predicted temperature using oxide depth measurements at 60% airfoil height Fig. 4 Predicted temperature using oxide depth measurements at 90% airfoil height Stress and Strain Analysis An approximate elastic stress analysis was conducted to determine the nominal elastic stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003513
EISBN: 978-1-62708-180-1
... component of total J -integral J , is: (Eq 5) J e = K I 2 E ⋅ ( 1 − ν 2 ) where E is Young's modulus and ν is Poisson's ratio. The current version of the R6 FAD ( Ref 3 , 12 , 13 ) expresses K r as a ratio of the linear elastic stress-intensity factor...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... the elastic range of the material and the cycles to failure are relatively high ( Ref 6 ). The stress-life method may not be appropriate for low-cycle applications (generally considered to be less than 10,000 cycles), where the applied loading could result in a significant cyclic plastic strain component...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
... and used in the analysis presented here. In planes A and B, the principal stresses along several directions (or planes) were obtained as a function of distance from the passageway bores. A typical elastic stress distribution is shown in one direction within plane A. In the analysis described here, the most...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0051294
EISBN: 978-1-62708-221-1
... (elastic) Stress relieving Hard-drawn carbon steel Fatigue fracture This example involves an agricultural tine, which is a relatively large double torsion spring with outer legs that are used to sweep through hay or other crops and turn them over. The tine machinery manufacturer submitted several...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001766
EISBN: 978-1-62708-241-9
..., it was necessary to evaluate the merits of the torsional strength characteristics of the extension rod. At the most fundamental level, a simple linear elastic stress analysis of the extension rod using handbook material properties [ 1 , 2 ] can be utilized to determine the elastic limit of the extension rod...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
... the wall thickness, are shown in Fig. 4 . The solid lines represent these stresses once they have been transformed into elastic-plastic stresses. As can be seen in Fig. 5 , the stresses were higher than the material yield stress up to 7 mm (0.28 in.) in depth from the internal radius. Fig. 4...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... plastic behavior ( Ref 11 , 12 ): (Eq 12) da dN = C Δ J q e ( − Q p RT ) Equation 11 estimates the fatigue crack growth per cycle, da / dN , as a function of material- and environmental-specific constants a and b ; the linear elastic stress-intensity factor...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... of fracture mechanics. The fracture mechanics approach is an important part of stress analysis at the tips of sharp cracks or discontinuities. The article reviews fracture mechanics concepts, including linear elastic fracture mechanics, elastic-plastic fracture mechanics, and subcritical fracture mechanics...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... mechanics analysis linear elastic fracture mechanics analysis stress analysis equations stress analysis THE STRESSES acting on a component may cause unacceptable deformation, cracking, or fracture. By definition, after a stress-related failure has occurred, it is a given that the stresses reached...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
.... There is an elastic stress concentration factor effect on the order of 1.6 which does exist at the flange radius and should be used in calculations as long as the local stresses are actually elastic. Elastic stress concentration should start to decay as the surface stresses start to exceed the yield stress. Elastic...
Image
Published: 30 August 2021
Fig. 3 General plot of the ratios of toughness and stress showing the relationship between linear elastic fracture mechanics and strength of materials as it relates to fracture and structural integrity. K , stress-intensity factor; K Ic , plane-strain fracture toughness; S , factor of safety More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001606
EISBN: 978-1-62708-226-6
... steel was assigned a yield stress of 250 MPa (36 ksi), a tensile strength of 600 MPa (87 ksi), and an elastic modulus of 210 GPa (30460 ksi). The titanium alloy was assigned a yield stress of 800 MPa (116 ksi), a tensile strength of 900 MPa (131 ksi), and an elastic modulus of 116 GPa (16820 ksi). 16...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
..., fracture, or elastic collapse (buckling). The evaluation and monitoring of these stresses by nondestructive method may play an important role in assessing the life of the components. In this study, the presence of residual stresses is analyzed by eddy current method. Further, a complete investigation...
Image
Published: 30 August 2021
Fig. 16 Failure assessment diagrams used to evaluate the elastic-plastic behavior of structures to estimate safe operation. (a) The Central Electricity Generating Board (CEGB) R6 curve. If a point describing the state of a component or structure falls below the R6 curve, then the structure More
Image
Published: 30 August 2021
Fig. 20 Example of (a) stable cyclic stress-strain hysteresis loops and (b) hysteresis loop depicted as the sum of elastic and plastic strain components. Adapted from Ref 4 More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... not be the case. Fracture may occur at loads less than that required to cause yield if a sufficiently large imperfection is present in the material. Classical design keeps allowable stresses entirely within the elastic region and is used routinely in the design of parts. Allowable stresses for static service...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... is present in the material. Classical design keeps allowable stresses entirely within the elastic region and is used routinely in the design of parts. Allowable stresses for static service are generally set at one-half the yield strength for ductile materials and one-sixth for brittle materials, although...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... that effective von Mises strain is not available as output variable in the simulation software. Since the initial stress and strain in the die is zero, the mean stress, stress amplitude , and strain amplitude is half of maximum values in all cases. Furthermore, the extrusion dies were deformed in elastic...