A new method for numerical simulation of thermal contact resistance in cylindrical coordinates

Zhang, Xing; Cong, Peizhong; Fujiwara, S.; Fujii, Minoru

doi:10.1016/j.ijheatmasstransfer.2003.04.001

Cited by 35 publications

(17 citation statements)

References 10 publications

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“…However, they are not directly capable of incorporating realistic contact topographies that require a three-dimensional analysis into the framework due to analytical limitations. Computational strategies that aim toward this purpose have been presented in, e.g., Salti and Laraqi [12] and Zhang et al [13] although simplifications regarding the thermomechanical coupling or the actual three-dimensional nature of the solution fields are still embedded in these approaches. A fully three-dimensional linear thermoelasticity strategy incorporating computer-scanned surface topographies has recently been pursued in Thompson [14] within a finite element method framework, however based on an identification for the temperature jump ϑ c that will be found as inconsistent within a finite deformation theory framework (see Remark 5).…”

Section: Introductionmentioning

confidence: 99%

Thermal contact conductance characterization via computational contact homogenization: A finite deformation theory framework

Temizer

Wriggers

2010

Numerical Meth Engineering

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SUMMARYIn order to predict the macroscopic thermal response of contact interfaces between rough surface topographies, a computational contact homogenization technique is developed at the finite deformation regime. The overall homogenization framework transfers macroscopic contact variables, such as surfacial stretch, pressure and heat flux, as boundary conditions on a test sample within a micromechanical interface testing procedure. An analysis of the thermal dissipation within the test sample reveals a thermodynamically consistent identification for the macroscopic thermal contact conductance parameter that enables the solution of a homogenized thermomechanical contact boundary value problem based on standard computational approaches. The homogenized contact response effectively predicts a temperature jump across the macroscale contact interface. The strong dependence of this homogenized response on macroscale solution variables of interest is demonstrated via representative three-dimensional numerical investigations. The proposed contact homogenization framework is suitable for the analysis of similar energy transport phenomena across heterogeneous contact interfaces where the investigation of the sources for energy dissipation is of concern.

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Section: Introductionmentioning

confidence: 99%

Thermal contact conductance characterization via computational contact homogenization: A finite deformation theory framework

Temizer

Wriggers

2010

Numerical Meth Engineering

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“…11. A typical rough surface constructed with some average roughness and minimum and maximum wavelengths is shown in Fig.…”

Section: Non-dimensional Surface Roughness Modelmentioning

confidence: 99%

“…The measurement of the mean surface slope, for example, largely depends on the resolution of the roughness measurement instrument. To overcome these difficulties, Tomimura et al [10] and Zhang et al [11] developed a new surface roughness model based on the superposition of sine waves with random parameters. The roughness model has been proved to be valid and can be used effectively in numerical simulations through comparison with the corresponding experimental results.…”

Section: Introductionmentioning

confidence: 99%

A Study on Thermal Contact Resistance at the Interface of Two Solids

2006

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In this paper, numerical simulations and measurements of the thermal contact conductance (TCC) at the interface between the plane ends of two cylinders in contact are carried out. The random model of surface roughness is developed, and the non-dimensional basic equations are solved based on a grid system with equi-peripheral intervals in the azimuthal direction that can express reasonably the real contact spot distribution. The effects of the contact pressure, the thermal conductivity of the interstitial medium, and the mean absolute slope of the rough surface on the TCC were clarified by using a network method. In the experiments, four pairs of brass cylinders, each of which has similar surface topology, are used for the TCC measurements. The hysteretic nature of TCC versus contact pressure was observed in the first loading cycle. The present numerical results show that the TCC increases linearly with the mean absolute slope of the surfaces even at the same mean roughness. Such a tendency agrees well with the measurements.

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“…The temperatures at the peripherally adjacent nodes 2 and 3 are directly used to calculate the heat flows across the related control surfaces. In the present calculations, 80 grids in the radial direction are used to obtain the numerical results that are independent of the number of grids [7]. Fig.…”

Section: Heat Conductionmentioning

confidence: 99%

Estimation of Thermal Contact Resistance Using Ultrasonic Waves

2006

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In this paper, numerical simulations of both the three-dimensional heat conduction and two-dimensional elastic wave propagation at the interface of contact solids have been carried out. Numerical results of heat conduction simulations show that both the true contact area and thermal contact conductance increase linearly with an increase in the contact pressure. Numerical results of the ultrasonic wave propagation show that the intensity of a transmitted wave is very weak but depends clearly on the contact pressure. On the other hand, the intensity of reflected wave amounts to more than 99% of the standard reflected wave that results from the case of one cylindrical specimen without contact. However, the intensity of the modified reflected wave defined by the difference between the reflected wave and standard reflected wave shows the same tendency as that of the transmitted wave. The intensities of both transmitted and modified reflected waves could be expressed by the same power function of the contact pressure. By comparing the results of heat conduction with those of ultrasonic propagation calculations, a power functional correlation between the thermal contact conductance and transmitted or modified reflected intensity has been obtained. Using this correlation, it will be possible to estimate the thermal contact conductance between two solids through measuring the intensity of either reflected or transmitted ultrasonic waves.

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A new method for numerical simulation of thermal contact resistance in cylindrical coordinates

Cited by 35 publications

References 10 publications

Thermal contact conductance characterization via computational contact homogenization: A finite deformation theory framework

Thermal contact conductance characterization via computational contact homogenization: A finite deformation theory framework

A Study on Thermal Contact Resistance at the Interface of Two Solids

Estimation of Thermal Contact Resistance Using Ultrasonic Waves

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