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Method, device and equipment for calculating thermal desorption heat of resin matrix material and medium

A technology of resin matrix and calculation method, used in computer-aided design, calculation, design optimization/simulation, etc., can solve the problems of linear interpolation not reflecting nonlinear effects, large degrees of freedom in feature point selection, and large differences in calculation results.

Pending Publication Date: 2022-05-13
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, linear interpolation cannot reflect the nonlinear effect in the process of material thermal structure, resulting in a large deviation between the calculated pyrolysis heat and the actual; on the other hand, the selection of feature points before and after pyrolysis has a large degree of freedom, resulting in the same measurement As a result, the calculation results obtained by different researchers are quite different

Method used

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  • Method, device and equipment for calculating thermal desorption heat of resin matrix material and medium
  • Method, device and equipment for calculating thermal desorption heat of resin matrix material and medium
  • Method, device and equipment for calculating thermal desorption heat of resin matrix material and medium

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Embodiment 1

[0082] figure 1 A flow chart showing the steps of the method for calculating the heat of thermal desorption of a resin matrix material according to an embodiment of the present invention.

[0083] Such as figure 1 As shown, the method for calculating the heat of thermal desorption of the resin matrix material includes: step 101, obtaining measured data based on constant-rate heating thermogravimetric / differential scanning calorimetry, and drawing a curve of temperature / heating time-compensated power; step 102 , for the temperature-compensated power curve, determine a plurality of linear fitting points before and after pyrolysis, and then perform linear fitting respectively to obtain the fitting midpoint before and after pyrolysis; step 103, according to the multiple linear fitting points before and after pyrolysis point and the midpoint before and after pyrolysis, to obtain the initial data set, and then to obtain the heating time-interpolation data curve; step 104, time-inte...

Embodiment 2

[0122] Figure 15 A block diagram of a calculation device for thermal desorption heat of a resin matrix material according to an embodiment of the present invention is shown.

[0123] Such as Figure 15 As shown, the thermal desorption heat calculation device of the resin matrix material includes:

[0124] The initial module 201 is to obtain the measured data based on constant-rate heating thermogravimetry / differential scanning calorimetry, and draw a curve of temperature / heating time-compensation power;

[0125] The fitting module 202 determines a plurality of linear fitting points before and after pyrolysis for the temperature-compensated power curve, and then performs linear fitting respectively to obtain the fitting midpoint before and after pyrolysis;

[0126] The interpolation module 203 obtains an initial data set according to a plurality of linear fitting points before and after pyrolysis and a fitting midpoint before and after pyrolysis, and then obtains a heating t...

Embodiment 3

[0148] The present disclosure provides an electronic device comprising: a memory storing executable instructions; a processor running the executable instructions in the memory to implement the method for calculating thermal desorption heat of a resin matrix material.

[0149] An electronic device according to an embodiment of the present disclosure includes a memory and a processor.

[0150] The memory is used to store non-transitory computer readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache). The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and the like.

[0151] The processor may be a central processing unit (CPU) or other form of processing unit having ...

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Abstract

The invention discloses a thermal desorption heat calculation method and device of a resin matrix material, equipment and a medium. The method comprises the following steps: acquiring measured data based on constant-rate heating thermogravimetry / differential scanning calorimetry, and drawing a temperature / heating time-compensation power curve; according to the temperature-compensation power curve, multiple linear fitting points before and after pyrolysis are determined, linear fitting is carried out, and fitting midpoints before and after pyrolysis are obtained; obtaining an initial data set according to a plurality of linear fitting points before and after pyrolysis and a fitting midpoint before and after pyrolysis, and further obtaining a heating time-interpolation data curve; respectively carrying out time integration on the heating time-compensation power curve and the heating time-interpolation data curve to obtain heat not containing pyrolytic heat and heat containing pyrolytic heat; and calculating thermal desorption heat according to the heat without the pyrolytic heat, the heat with the pyrolytic heat and the initial weight. According to the method, accurate quantitative calculation of pyrolysis heat absorption of the resin matrix material is realized through nonlinear fitting.

Description

technical field [0001] The invention relates to the field of aircraft thermal protection, and more specifically, to a method, device, equipment and medium for calculating thermal desorption heat of resin matrix materials. Background technique [0002] Carbonization and pyrolysis ablation heat-resistant materials are widely used in the high-temperature thermal protection of hypersonic aircraft nose cone, large area, wing rudder structure and other areas. Pyrolysis and heat absorption of resin matrix materials is one of the main heat protection mechanisms of ablation thermal protection materials. Accurately obtaining the quantitative value of pyrolysis and absorption heat of resin matrix materials can effectively improve the design accuracy of thermal protection systems for hypersonic vehicles. [0003] At present, in the calculation process of pyrolysis heat of resin materials based on constant rate heating thermogravimetry / differential scanning calorimetry, two characteristi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/15G06F119/08G06F119/06G06F113/28G06F113/26
CPCG06F30/20G06F30/15G06F2119/08G06F2119/06G06F2113/28G06F2113/26
Inventor 罗晓光聂榕序邓代英高俊杰俞继军艾邦成
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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