Study on the cell size effect of steady state thermal performance of metallic honeycomb sandwich panels

Yu-dong Lai; Shi-ping Sun

doi:10.1117/12.921528

12 April 2012 Study on the cell size effect of steady state thermal performance of metallic honeycomb sandwich panels

Yu-dong Lai, Shi-ping Sun

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84092H (2012) https://doi.org/10.1117/12.921528
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

In this paper, numerical study is performed to reveal the influences of the cell size on the steady state thermal performance of hexagonal metallic honeycomb sandwich panel, by using the semi-empirical Swann and Pittman formula and the Finite Element Method (FEM), respectively. Based on the same material volume of honeycomb core, two types of hexagonal honeycomb core, i.e., size variation of core cell with a constant core height and height variation of core with a constant side length of hexagonal cell, are considered to establish the panel's thermal analysis model, which including the conduction and radiation coupling. Comparisons between the temperature distribution results from both methods show that FEM can reveal the size effect of the honeycomb cell on the thermal performances of sandwich panel while the Swann and Pittman formula can not. At the same time, numerical results show that for the core with constant height, the panel thermal performance analyzed by FEM has a tendency of being close to the results obtained from Swann and Pittman formula as the core cell size decreases; whereas, if the hexagonal cell with constant side length is concerned, the greater the core height, the worse the thermal conductive performance of sandwich panel. Besides, analyses based on both methods also show that the temperature distribution of the lower surface of panel becomes gradually uniform when the wall thickness of hexagonal cell decreases.

Citation Download Citation

Yu-dong Lai and Shi-ping Sun "Study on the cell size effect of steady state thermal performance of metallic honeycomb sandwich panels", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84092H (12 April 2012); https://doi.org/10.1117/12.921528

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KEYWORDS

Finite element methods

Skin

Solids

Thermal modeling

Thermal effects

Convection

Temperature metrology

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