Method and system for multiscale concurrent simulation of composite materials

Abstract

The present invention provides a multi-scale concurrent simulation method for composite materials, which includes the following steps: Step S1: Construct the constitutive phase materials of each component phase of the composite material through a data-driven algorithm; Step S2: Perform adaptive cluster analysis for the constitutive model, Multi-scale concurrent computing of composite materials is realized through adaptive cluster analysis. Adaptive cluster analysis includes online and offline stages. Through the offline stage, RVE is divided into clusters based on strain concentration tensors and the interaction between clusters is solved. The tensor component adjusts the stiffness of the reference material through self-adaptive iterative adjustment in the online stage, and combines the material constitutive model of each component phase to obtain the cluster stress-strain distribution. The invention also provides a composite material multi-scale concurrent simulation system. The invention does not need to introduce any empirical material model when performing multi-scale analysis on the composite material, omits the cumbersome parameter calibration process, and is more convenient to apply.

Description

technical field [0001] The invention relates to the technical field of composite material design, in particular to a composite material multi-scale concurrent simulation method and system, and in particular to a composite material multi-scale concurrent simulation method based on adaptive cluster analysis and data-driven algorithm Background technique [0002] With the rapid development of computing science and the continuous improvement of computer performance, numerical simulation technologies such as finite element method are increasingly applied to various engineering and technical fields to guide industrial production, shorten design cycles, and reduce R&D costs. At present, there are many kinds of popular CAE analysis software, and the modeling technology and solution algorithm are becoming more and more mature. It provides rich integrated modules and solutions for structural analysis, high-speed impact, fluid-structure interaction, multi-physics and other problems in p...

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Problems solved by technology

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multi-scale concurrent simulation method and system for composite materials, using data-driven algorithms to construct the material constitutive of each component phase in adaptive cluster analysis, and replace the model with data , in order to realize the multi-scale concurrent calculation of composite materials on the existing commercial finite element software platform, and at the same time avoid the systematic deviation caused by the traditional constitutive model in multi-scale analysis, solve the difficult problem of constitutive modeling, and improve the composite material Multi-scale analysis prediction accuracy and calculation efficiency

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