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finite-element method

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
... that the fracture originated near the blade-to-hub attachment in the area of the weld buildup. Specimens from four failed castings and from an impeller that had developed cracks prior to design modification were subjected to a complete analysis. A number of finite-element-method computer models were also...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001308
EISBN: 978-1-62708-215-0
..., it was recommended that welding repair be curtailed; welding could exacerbate the cracking problem by introducing additional residual stresses into the rail. Existing through-flange cracks were analyzed by a finite-element method to show that the cracks did not compromise the integrity of the rail. However, because...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001851
EISBN: 978-1-62708-241-9
.... Equations of motion accounting for misalignment and unbalance were then derived using finite elements. A spectral method for resolving these equations was also developed, making it possible to obtain and analyze dynamic system response and identify misalignment and unbalance conditions. rotors shafts...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... Abstract This article provides information on the development of finite element analysis (FEA) and describes the general-purpose applications of FEA software programs in structural and thermal, static and transient, and linear and nonlinear analyses. It discusses special-purpose finite element...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... Abstract When complex designs, transient loadings, and nonlinear material behavior must be evaluated, computer-based techniques are used. This is where the finite-element analysis (FEA) is most applicable and provides considerable assistance in design analysis as well as failure analysis...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001309
EISBN: 978-1-62708-215-0
.... Inspection intervals were devised to avoid future problems. Bending fatigue Crack propagation Finite element method Mechanical properties Stress concentration Tubing Weldments 1008 UNS G10080 Fatigue fracture Background A significant percentage of the approximately 300 1982-model-year...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001763
EISBN: 978-1-62708-241-9
... at the fractured regions by the finite element method. The fatigue failure analysis also provided a basis for some suggestions to raise the durability of the transmission system of the ATV. Visual Examination As shown in Fig. 1 , the shaft fractured at the location secured with a pinion gear, where...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
..., initiating fatigue crack on the wire surface. Raoof and Kraincanic [ 7 ] used a model to analyze the large-diameter steel ropes with independent wire rope core (IWRC). They considered the effect of friction between the wires. Jiang et al. [ 8 ] used finite element method to analyze wire ropes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001136
EISBN: 978-1-62708-229-7
..., utilizing the actual defect size and the material toughness, to give a peak stress at failure of approximately 156 MPa. On the other hand the failure stress was evaluated as the sum of the mean (steady state) stress predicted by finite element methods (of 110 to 120 MPa) plus half the cyclic stress...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001764
EISBN: 978-1-62708-241-9
... a load couple and multipoint constraints (MPCs). In the finite element method, MPCs are used to tie together all of the nodes on a component surface through a single node off the component surface, as indicated in the figure. In the present case, the MPCs model the point of load transfer to the component...
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
... and Properties of Engineering Materials , McGraw-Hill , New York, NY , 2002 , pp. 255 and 357 . 17. Anon .: ABAQUS User's Manual , Version 6.2, Hibbit, Karlsson, and Sorenson, Inc. , Providence, RI , 2001 , pp. 14.1.1 – 2 . 18. Hughes T.J.R. : The Finite Element Method , Prentice...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... examination of the crack origin revealed that casting pores played a role in initiating the crack. Stress components, identified by finite element analysis, also played a role, particularly the stresses imposed by the bolt assembly leading to plastic strain. It was concluded that the failure can be prevented...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... it is possible or practical. In cases where the accessibility around the location of interest is limited to one or two directions (either due to sample geometry, economic, or time constraints), the priority is given to stress measurements in the direction perpendicular to the crack line. Finite-Element Method...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... constraints, or time constraints), the priority is given to stress measurements in the direction perpendicular to the crack line. Finite-Element Method for Measurement Location Selection Finite-element methods are very useful to predict the stress distribution in a component under applied loads...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... an investigation that included fractographic and microstructural analysis, hardness testing, inductively coupled plasma spectroscopy, and finite-element analysis. The fracture was shown to be brittle in nature and covered with oxide flakes, but no other flaws relevant to the failure were observed...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4
... of scientific and computational power that has been brought to bear on structural design and structural failure assessments over the last few decades, it makes little sense to perform a 1,000,000 element finite-element analysis using parallel processing capabilities only to reach the final result and reduce...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... of finite element modeling, they analyzed the material as well as the design and in-service application of the mold. They discovered that overconstraining the mold, while it was in service, caused excessive thermal stresses which accelerated crack initiation and propagation. Investigators also proposed...
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
... as investigated by Arif et al. [ 2 , 3 ]. Therefore, it is very desirable to identify critical process parameters and die design features so as to predict their susceptibility to failure due to cyclic fatigue. Finite element simulation is an efficient tool for analysis of forming processes and tool loading...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001137
EISBN: 978-1-62708-228-0
.... As a first estimation of the critical flaw size the steady state stresses, as determined by a finite element model, (FEM) were considered ( Fig. 2 ). The critical flaw occurred, not surprisingly, in the vicinity of the highest hoop stress as determined by the FEM model. This stress was approximately 80 MPa...