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Material Based Structure Design: Numerical Analysis Thermodynamic Response of Thermal Pyrolytic Graphite /Al Sandwich Composites

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Abstract

Amine-grafted multiwalled carbon nanotubes (MWCNTs) based thermally conductive adhesive (TCA) was studied in the previous paper and applied here in thermal pyrolytic graphite (TPG)/Al radiator due to its high thermal conductivity, toughness and cohesiveness. In this paper, in an attempt to confirm the application of TCA to TPG/Al sandwich radiator, the thermodynamic response in TPG/Al sandwich composites associated with key material properties and structural design was investigated using finite element simulation with commercial available ANSYS software. The induced thermal stress in TCA layer is substantial due to the thermal expansion mismatch between Al plate and TPG. The maximum thermal stress is located near the edge of TCA layer with the von Mises stress value of 4.02 MPa and the shear stress value of 1.66 MPa. The reasonable adjustment of physical-mechanical properties including thermal conductivity, thermal expansion, Young,s modulus and the thickness of TCA layer, Al plate and TPG are beneficial for reducing the temperature of the top surface of the upper skin and their effects on the reduction of thermal structural response in some ways. These findings will highlight the structural optimization of TPG/Al radiator for future application.

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Acknowledgments

This work was supported by Natural Science Foundation of Guangdong Province (2015 A030310501),Open Fund of Jiangsu Key Laboratory of Materials and Technology for Energy Conversion (MTEC-2015 M01) and Natural Science Foundation of Guangdong Province (2015 A030310501).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China

    Junxia Wang & Dingshan Yu

  2. Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China

    Junxia Wang

  3. School of Science, Wuhan University of Technology, Wuhan, 430070, China

    Shilin Yan

Authors
  1. Junxia Wang
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  2. Shilin Yan
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  3. Dingshan Yu
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Correspondence to Junxia Wang.

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Wang, J., Yan, S. & Yu, D. Material Based Structure Design: Numerical Analysis Thermodynamic Response of Thermal Pyrolytic Graphite /Al Sandwich Composites. Appl Compos Mater 23, 1167–1176 (2016). https://doi.org/10.1007/s10443-016-9506-3

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  • DOI: https://doi.org/10.1007/s10443-016-9506-3

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