Finite Element Analysis of the Thermal and Mechanical Behaviors of Bolted Joint

Fukuoka, Toshimichi

doi:10.1115/pvp2003-1881

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Thus, the calculation of effective conductance in this area is simplified based on the experimentally obtained function. 24 Heat transfer away from the MP is dominated by the Fourier heat conduction equation, which could be expressed as follow:…”

Section: Thermal Contact Condition At Substrate Interfacementioning

confidence: 99%

“…However, it is usually simplified in above models without physical explanation, which has been proved non-negligible in some situations. In the analysis of thermal and mechanical behavior of bolted joint, Fukuoka et al 24 studied the effect of thermal contact resistance at the interface, and they concluded that it is non-negligible on the calculation of thermal stress. Li et al 25 developed a FEM model and numerically investigated the effect of thermal contact in thermal resistance welding and results showed that the formation of weld nugget was largely affected by the surface roughness of the electrodes when its value exceeded a threshold.…”

Section: Introductionmentioning

confidence: 99%

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Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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An improved 3 D heat and mass transfer model was developed to study the effects of interface conditions during modelling of laser dissimilar welding. In detail, the interface conditions consist of the physical processes at gas/liquid surface (e.g. free surface deformation and optical absorptance), substrate interface (e.g. mixture properties in liquid phase and thermal contact condition) and solid/liquid interface (e.g. fusion line). Their effects on heat and mass transfer are numerically and experimentally analyzed, which are all non-negligible in the welding modelling. In conclusion, free surface deformation influences convection flow and should be considered in the situation of micro-welding and high energy-input welding. Besides, the energy transfer between laser and substrate is more reasonably described by the optical absorptance expressed in polynomial function. The mass transfer induced variation of mixture properties is well described by the method based on time-dependent mixture fraction. Thermal resistance between clamp and substrate should be considered in the modelling of temperature field on macroscale. The joint conductance at substrate interface could be neglected when modelling heat and mass transfer inside the melt pool, while it should be calculated in the simulation of temperature distribution based on the mechanism of heat conduction. The obtained results in this paper provide a vital insight into the interface conditions in laser dissimilar welding process.

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Section: Thermal Contact Condition At Substrate Interfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

Research on optimizing the axial force of thread connection of engine connecting rod

Jia

Cai

Liu

et al. 2021

Engineering Failure Analysis

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Analysis of Heat Flow Around Bolted Joints and Variations of Axial Bolt Force

Fukuoka

Nomura

Shino

2007

Volume 2: Computer Applications/Technology and Bolted Joints

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A bolted joint is frequently used under thermal load in practical applications, such as pressure vessels, internal combustion engines, etc. In order to accurately evaluate the thermal stresses thus produced, the effects of thermal contact resistance at the interface and the heat flow through small gaps, which exist around the objective bolted joint, must be taken into account. In this paper, a numerical approach with high computation efficiency is proposed, where empirical equations for thermal contact coefficient and apparent thermal contact coefficient are incorporated into commercial engineering software. By conducting systematic three-dimensional FE analyses, it is quantitatively elucidated how the supplied heat flows through each part of a bolted joint and how the bolt stress varies with time. Bolted joints made of the materials with low thermal conductivity exhibit specific behaviors on the heat flow pattern around the bolted joint and the variations of axial bolt stress and bolt bending stress.

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Finite Element Analysis of the Thermal and Mechanical Behaviors of Bolted Joint

Cited by 4 publications

References 9 publications

Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding

Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding

Research on optimizing the axial force of thread connection of engine connecting rod

Analysis of Heat Flow Around Bolted Joints and Variations of Axial Bolt Force

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