Composite material curing process modeling method
A curing process and composite material technology, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as low simulation efficiency and long modeling cycle, and achieve efficient prediction results
Pending Publication Date: 2022-02-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem of long modeling cycle and low simulation efficiency of the existing composite material curing process model, a method for modeling the composite material curing process, which is used to realize the state information from the curing process to the curing process of composite parts The built model can be used for rapid prediction of curing state information, curing process optimization, curing process monitoring, etc.
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] Such as Figure 1-7 shown.
[0026] A method for modeling the curing process of composite materials is used to realize the mapping from the curing process to the state information of the curing process of composite parts. Specifically, the following steps are included (such as figure 1 shown):
[0027] Step 1: Obtain a set of curing process data
[0028] Each curing process x i (t) includes temperature process information T(t) and / or pressure process information P(t), T(t) and P(t) represent the temperature and pressure at each time point in the curing process, N is the curing process number. In this embodiment, the curing temperature information is considered, and as figure 2 The temperature profile of the dual holding platform is shown as an example. first to figure 2 The parameters of the middle curve are randomly sampled within a...
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Abstract
The invention discloses a composite material curing process modeling method, which can realize mapping from a curing process to state information of a composite material part curing process. The method is characterized by comprising the following steps: firstly, acquiring a group of curing process data, then acquiring state information of a composite part in a curing process under each curing process, and training a neural operator model by using the sample data, realizing the mapping from the curing process to the state information of the composite part curing process through four processes of dimension raising mapping, iterative kernel integration, dimension reduction mapping and physical constraint. The method can be widely applied to composite material curing process modeling, and the established model can be used for rapid prediction of curing state information, curing process optimization, curing process monitoring and the like.
Description
technical field [0001] The invention relates to the technical field of composite material solidification molding, in particular to a composite material solidification process, specifically a composite material solidification process modeling method that inputs the solidification process and outputs the solidification process state information. Background technique [0002] In recent years, composite materials have been widely used in fields such as aerospace, automobiles and ships due to their lightweight and high-strength material properties. Composite material curing molding refers to the process of using a certain curing process to make a series of physical-chemical changes inside the composite material and finally form it, which is a key link in the manufacturing process of composite materials. [0003] The curing process directly determines the evolution of the temperature field and curing degree field of the composite parts during the curing process, so it must be care...
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IPC IPC(8): G06F30/23G06F30/27B29C70/54
CPCG06F30/23G06F30/27B29C70/54
Inventor 李迎光刘旭陈耿祥孟庆禄郝小忠周靖
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS