Experimental and Numerical Study of the Formation of Thermophysical Characteristics of Carbon Composite Materials. Part 2. Numerical Simulation of Operability of a Refractory Product Made of Carbon Composite Material
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A heating of a carbon-made product and thermophysical properties of a carbon material in the temperature range from 300 to 2,500 K were studied. A discrete-heterogeneous mechanism of heating the surface of a multi-dimensionally reinforced carbon-carbon composite material (CCCM) subject to accelerated heating was revealed. Based on the results of testing carbon materials in the temperature range from 300 to 3,000 K, a numerical stress analysis of the product was performed, in which the arising stress condition was considered to be resultant from constraining the deformation of the heated parts of the product by relatively cold fragments. The safety factor levels were found for different parts of the product. It was shown that an additional increase in thermal strength as part of the combined definition of thermal resistance of CCCM products is associated with high thermal conductivity of 1D-reinforced rods of material structure.
Keywordscarbon-carbon composite material (CCCM) structural graphite discrete-heterogeneous mechanism of heat conductance surface of reinforced product radioisotope generator heat-protective housing of radiation heat source (RHS)
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