Fibrous grain three-dimensional crystal modeling and analyzing method and device

By constructing a three-dimensional fibrous grain model and performing finite element analysis, the accuracy and efficiency problems of fibrous grain modeling in existing technologies are solved, and high-precision simulation of the mechanical properties of metal materials is achieved.

CN120656611APending Publication Date: 2025-09-16WUHAN UNIV OF TECH
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Patent Information

Application Number
CN202510728034.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-03
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

The existing technology in fibrous grain modeling suffers from grain morphology distortion, low modeling efficiency, and large data matching errors, making it difficult to accurately simulate the mechanical response of metal wire materials.

Method used

By obtaining the grain information of the fiber grain sample of the metal wire material, the EBSD probe of the scanning electron microscope was used to obtain the grain orientation and size distribution. Combined with MATLAB, MTEX, Neper, Gmsh and ABAQUS software, a three-dimensional fibrous grain model was constructed and finite element analysis was performed. The Euler angle screening and Monte Carlo algorithm were used to optimize the Euler angle data, and the load and boundary conditions were set for simulation.

Benefits of technology

The accuracy and efficiency of fibrous grain modeling are improved, model construction errors are reduced, and the mechanical behavior of metal materials under different loads and boundary conditions can be simulated more accurately, thereby improving the simulation accuracy of the mechanical properties of metal materials.

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Abstract

The invention discloses a fibrous grain three-dimensional crystal modeling and analyzing method, and belongs to the technical field of finite element analysis. The method comprises the following steps: acquiring a metal wire material fiber grain sample, processing to obtain a ctf file, and importing the ctf file into MATLAB to obtain grain orientation information and grain size distribution data; based on the grain size distribution data, constructing a three-dimensional fibrous grain model to obtain a geo file; importing the geo file into Gmsh software, and carrying out grid division to generate an inp file; on the basis of the grain orientation information, Euler angles with the same number as the three-dimensional fibrous grain models are screened by adopting an Euler angle screening method to obtain Euler angle data, and the Euler angle data passing verification are processed to obtain grain orientation parameters; the grain orientation parameters and the inp file are input into ABAQUS, and independent material attributes related to each grain are generated; finite element analysis is conducted on the fiber crystal grain sample according to the independent material attribute of each crystal grain, an analysis result is obtained, and the modeling accuracy of the fibrous crystal grains is improved through the method.
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