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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (11): 2360-2367.doi: 10.3969/j.issn.1000-1093.2021.11.009

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High-temperature Shock Resistance of Launch Container with Metal and Carbon Fiber Composite Structure

PENG Lumei, ZHOU Chengkang, ZHANG Zhiyong, LIU Dong   

  1. (Beijing Institute of Specialized Machinery, Beijing 100143, China)
  • Online:2021-12-27

Abstract: In order to solve the problem of scouring and ablation of the carbon fiber reinforced plastic (CFRP) launch container by the high temperature gas with particles generated during the launch process, a launch container is made of a thin-walled metal and CFRP composite structure, with the inner layer being the metal layer and the outer layer being the CFRP layer. The temperature distributions of the composite structures with different materials and different thicknesses of metal layer and CFRP layer were simulated using the CFD commercial software Fluent, and the linear buckling analysis of temperature was carried out using the finlte element analysis software. Finite element analysis software Ansys was used to study the buckling temperatures of steel-CFRP composite structure, aluminum-CFRP composite structure, and the composite structures with different thicknesses of metal layer. The parameters of metal-CFRP composite structure in the thermal emission environment were presented, and the actual thermal emission test results were compared and analyzed. The simulated and test results show that the thickness of metal layer is too thin to adapt to the high temperature shock in thermal launch process, and the metal layer is buckled inward; steel+CFRP composite structure has higher capacity than aluminum+CFRP composite structure for heat-emitting temperature impact under the condition of the same thickness; and steel+CFRP composite structure has lower capacity than aluminum+CFRP composite structure for heat-emitting temperature impact under the condition of the same mass.

Key words: metal+CFRPcompositestructure, thermallaunch, composites, linearbuckling

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