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Monte carlo based method for simulating carbon/ carbon composite material texture

A technology of Monte Carlo simulation and carbon composite materials, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as high cost, long time consumption, and difficult waste gas treatment

Inactive Publication Date: 2015-04-29
SHANGHAI UNIV
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Problems solved by technology

[0005] In order to solve the problems of the prior art, the present invention overcomes many shortcomings of the pyrolytic carbon deposition process, such as long time consumption, high cost, and difficulty in waste gas treatment, and provides a method based on MC method to simulate the formation mechanism of pyrolytic carbon texture of C / C composite materials Methods

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  • Monte carlo based method for simulating carbon/ carbon composite material texture
  • Monte carlo based method for simulating carbon/ carbon composite material texture
  • Monte carlo based method for simulating carbon/ carbon composite material texture

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Embodiment 1

[0051] In this embodiment, the method for studying the texture of carbon / carbon composite materials based on Monte Carlo simulation can be implemented in the following five steps:

[0052] A. Chemical kinetic modeling of pyrolytic carbon deposition: The growth of pyrolytic carbon matrix in the CVI process is a growth process controlled by heterogeneous reactions, involving 7 components and 9 reactions, including small molecular aromatic hydrocarbons C 6 (denoted as P) and small molecular linear hydrocarbons C 2 (denoted as F) two main gas phase components, according to the L-H theory, the process of deposition into carbon is divided into three processes: component adsorption, surface component desorption and surface dehydrogenation reaction. Based on the P-F model, MT and HT pyrolytic carbon are regarded as two metastable phases of carbon, and the two main components in the gas phase are used as precursors for pyrolytic carbon deposition (linear small molecule hydrocarbon C 2...

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Abstract

The invention discloses a monte carlo based method for simulating a carbon / carbon composite material texture. The method comprises the steps of performing chemical kinetics modeling for pyrolytic carbon matrix deposition; performing monte carlo modeling for pyrolytic carbon deposition process; compiling C++ program of simulated pyrolytic carbon deposition process; setting the program into 20000 MCS, wherein 1MCS=50*50 cycles; the simulation results are drawn into a map. According to the method, the characteristic of monte carlo simulation randomness is utilized successfully; the deposition of pyrolytic carbon on the matrix surface during CVI process is simulated, so as to really reflect the influence of the CVI process parameters to the whole reaction process; the method is of good technical guide significance for industrial production.

Description

technical field [0001] The present invention relates to a research method for the formation mechanism of pyrolytic carbon texture in a carbon / carbon (C / C) composite material, in particular to a method for predicting the pyrolytic carbon deposition process of a C / C composite material, and also relates to A method based on Monte Carlo stochastic simulation research analysis is proposed. The invention is applied to the technical field of establishing a process parameter database and analyzing the influence of CVI process parameters on the pyrolytic carbon deposition process, and has good technical guidance significance for the industrial production of C / C composite materials. Background technique [0002] C / C composite material, namely carbon fiber reinforced carbon-based composite material, is a high-temperature-resistant high-performance structural material with high specific strength, high specific modulus, wear resistance and good toughness, and is widely used in the aerosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 刘柄林马骁汤哲鹏邵勤思孙晋良任慕苏李爱军
Owner SHANGHAI UNIV
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