Modeling of 3-D fractal thermal contact conductance and multi-parameter effect analyses

LI Xiaopeng, LIU Yang, WANG Xue, HU Dandan, MAO Xin, WANG Bingbing

Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (5) : 1-6.

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PDF(1898 KB)
Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (5) : 1-6.

Modeling of 3-D fractal thermal contact conductance and multi-parameter effect analyses

  • LI Xiaopeng, LIU Yang, WANG Xue, HU Dandan, MAO Xin, WANG Bingbing
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Abstract

On the basis of the traditional M-B contact model, adopting the 3-D fractal theory, the contact model of a 3-D fractal interface was derived and the 3-D fractal thermal contact conductance model was established. The effects of normal load, fractal dimension, fractal scale parameters, material characteristic parameters and couplings between any two of all these parameters on thermal contact conductance were revealed with simulation analyses. The results showed that the thermal contact conductance is positively correlated to normal load; when , There is a nonlinear relationship between them; when , they tend to have a linear relationship; when , thermal contact conductance increases with increase in fractal dimension; when , it decreases with increase in fractal dimension; thermal contact conductance is negatively correlated to fractal scale parameters, and it is positively correlated to material characteristic parameters; effects of couplings between any two of all these parameters on thermal contact conductance are also gained.


Key words

 fractal theory / thermal contact resistance / thermal contact conductance model / fractal parameter / material characteristic parameter / numerical simulation

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LI Xiaopeng, LIU Yang, WANG Xue, HU Dandan, MAO Xin, WANG Bingbing. Modeling of 3-D fractal thermal contact conductance and multi-parameter effect analyses[J]. Journal of Vibration and Shock, 2018, 37(5): 1-6

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