High-Temperature Low Cycle Fatigue Life Prediction and Experimental Research of Pre-Tightened Bolts

Yu, Qingmin; Zhou, Honglei; Yu, Xudong; Yang, Xiangjin

doi:10.3390/met8100828

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…The steel construction industry uses bolted assemblies, consisting of mechanical connections, steel plates and highstrength bolts, because of their high-performance and reliable clamping properties [13,14]. The best-known connections for tubular sections are the flange-type and friction-type, the latter being less sensitive to the imperfections that may be found in the plates [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Metamodel simulation for designing monopole telecommunication antenna support structures

Sánchez-Guerrero

Lagos-Zamora

Peña-Jordán

et al. 2023

DYNA

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Finite element analysis is used to estimate the displacements and forces present in each element of a structure. This type of analysis is time consuming in pre-processing, processing, and post-processing. It also incurs considerable computational costs. A simplified methodology is therefore required to reduce design time considerably. The research involved the development and application of an experimental methodology and a simulation, using Ansys Research software’s LS-DYNA module, in which loads are applied in accordance with the ANSI/TIA 222-G standard used in the telecommunications industry. The matrix method was applied, obtaining results for nodal displacement that were compared with the results of physical tests and a metamodel, showing a variation range of 8.44%. In addition, it was shown that a metamodel can be used during the pre-design stage, significantly reducing the time required for analysis.

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Section: Introductionmentioning

confidence: 99%

Metamodel simulation for designing monopole telecommunication antenna support structures

Sánchez-Guerrero

Lagos-Zamora

Peña-Jordán

et al. 2023

DYNA

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“…Cura F et al studied the wear damage of spline coupling and found that graphene is helpful in reducing the friction coefficient and improving the wear reliability [ 5 ] whereas for the sealing bolts, the common failure modes lead to fatigue fracture, creep failure, wear-out, and bolt looseness failure [ 6 , 7 , 8 ]. Yu Q et al studied the low cycle fatigue life of pre-tightened bolts at high temperature and proposed a new low cycle fatigue model based on the von Mises equivalent stress–strain criterion [ 9 ]. In addition, considered as the weakest part of the mechanical sealing system, the graphite ring usually fails due to the rotating friction of the moving ring and eventually falls to pieces [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of Critical Systems in A Fuel Booster Pump Using Advanced Simulation Techniques

Luo

Dong

et al. 2022

Materials

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The fuel booster pump is one of the most vulnerable physical assets in an operating engine due to the harsh environmental and operational conditions. However, because of its high structural complexity and extreme operational conditions, the reliability design of the fuel booster pump becomes especially difficult, particularly by means of experiments. Thus, to overcome such a problem, advanced simulation techniques have become adequate solutions for the reliability assessment and analysis of a fuel booster pump at the design stage. In this paper, by considering the effects of the uncertainties of multiple design parameters, fatigue life distributions of the four key components (which are the sealing bolt, spline shaft, graphite ring, and inducer, respectively) in a fuel booster pump were first predicted by PoF-based reliability simulations. Then, through further sensitivity analysis on each key component, the design parameters most sensitive to the component mean fatigue life were detected from a total of 25 candidate parameters. These parameters include the “nominal diameter” and “preload” for the sealing bolt, “major and minor diameters of the small spline” for the spline shaft, “inside diameter” for the graphite ring, and “fuel pressure on the blade front surface” for the inducer, respectively. These sensitivity results were found to be in good agreement with the results from the qualitative cause analysis on each key component.

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“…This paper provides the background for the modifications. Yu et al [19] mainly studied the low-cycle fatigue life of the pre-tightened bolts working at a high temperature. A novel test fixture was designed for fatigue tests, and low-cycle fatigue tests of pre-tightened bolts were conducted at the temperatures of 550 • C and 650 • C. The research results provided a theoretical basis for the low-cycle fatigue life prediction of pre-tightened bolts.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Durability of Threaded Joints

et al. 2021

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The article deals with the determination of the resistance to cyclic loading of the threaded joints of pressure vessels and defective elements according to the failure mechanics criteria. Theoretical and experimental studies do not provide a sufficient basis for the existing calculation methods for the cyclic strength of the threaded joints of pressure vessels. The short crack kinetics in the threaded joints, a shakedown in one of the joint elements of pressure vessels, i.e., in the bolt or stud, has not been studied sufficiently. The calculation methods designed and improved within the study were based on theoretical and experimental investigations and were simplified for convenient application to engineering practice. The findings could be used to investigate the shakedown of studs of a different cross-section with an initiating and propagating crack. Value: the developed model for the assessment of durability of the threaded joints covers the patterns of resistance to cyclic failure (limit states: crack initiation, propagation, final failure) and shakedown (limit states: progressive shape change and plastic failure). Analysis-based solutions of plastic failure conditions and progressive shape change were accurate (the result was reached using a two-sided approach; the solutions were obtained in view of the parameters of the cyclic failure process in the stud (bolt) and based on experimental investigations of the threaded joints).

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High-Temperature Low Cycle Fatigue Life Prediction and Experimental Research of Pre-Tightened Bolts

Cited by 7 publications

References 27 publications

Metamodel simulation for designing monopole telecommunication antenna support structures

Metamodel simulation for designing monopole telecommunication antenna support structures

Reliability Analysis of Critical Systems in A Fuel Booster Pump Using Advanced Simulation Techniques

Assessment of the Durability of Threaded Joints

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