Method for predicting curing deformation rebound angle of L-shaped composite material workpiece

A composite material and curing deformation technology, which is applied in design optimization/simulation, instrumentation, geometric CAD, etc., can solve problems such as the inability to accurately predict the curing springback deformation, and the inability to establish a prediction model for the curing deformation springback angle
CN113221398AActive Publication Date: 2021-08-06CHENGDU AIRCRAFT INDUSTRY GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU AIRCRAFT INDUSTRY GROUP
Publication Date
2021-08-06

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Abstract

The invention discloses a method for predicting a curing deformation rebound angle of an L-shaped composite material workpiece, which belongs to the technical field of finite element calculation of composite materials, and is characterized by comprising the following steps of: a, model establishment: constructing a model profile in graphic processing software, and assigning a value to the feature structure variable of a model, importing the molded surface of the model into finite element processing software, and carrying out grid division, boundary constraint and material laying layer setting; b, performing finite element simulation calculation; c, measuring a deformation rebound angle; d, generating a prediction model. According to the method, the geometric model of multiple groups of continuous variables is established, finite element simulation calculation is carried out through feature assignment, and finally the curing deformation springback angle prediction model under any geometric structure parameter is established, so that the curing springback deformation condition of the L-shaped composite material part under any geometric structure parameter can be accurately predicted.
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Description

technical field

[0001] The invention relates to the technical field of finite element calculation of composite materials, in particular to a method for predicting the springback angle of solidified deformation of L-shaped composite material parts. Background technique

[0002] The curing deformation of composite materials is the most important factor that causes the assembly fit to be out of tolerance, so the designer hopes to predict the curing deformation of the part in advance before the part is manufactured, and then optimize the structure or make a reasonable tolerance allocation. At present, the main method to predict the curing deformation of composite materials is to realize it through finite element simulation calculation. The calculation results of this method are relatively accurate, and there are clear physical models to support it. The whole process of curing can be disassembled and analyzed. However, the modeling process of this method is complicated. Whenever ...

Claims

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