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A Method of Establishing Hailstone Model Based on Inserting Cohesion Between Any Two Units

A technology of cohesion and inter-unit, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve problems that cannot be achieved and limitations cannot be satisfied

Active Publication Date: 2019-05-17
ZHEJIANG UNIV
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Problems solved by technology

[0003] At present, the cohesive force interface unit based on the cohesive force model has been embedded in the ABAQUS commercial finite element software. Based on the CAE modeling function of the ABAQUS finite element software, the cohesive force interface unit can be inserted between the internal surfaces of the model. This kind of insertion of the cohesive force interface unit The method can meet the finite element analysis of delamination and debonding of composite laminates, device bonding, etc., but the method of inserting cohesive force interface elements between surfaces cannot meet all finite element analyzes due to limitations, and hail impacts composite material layers. Plywood needs to insert a cohesion unit between any two units of the hail model, which cannot be done by the existing ABAQUS commercial software module

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  • A Method of Establishing Hailstone Model Based on Inserting Cohesion Between Any Two Units
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  • A Method of Establishing Hailstone Model Based on Inserting Cohesion Between Any Two Units

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Embodiment Construction

[0020] First of all, it needs to be explained that the present invention is an application of computer technology in the field of finite element modeling. During the implementation of the present invention, the application of multiple software function modules will be involved. The applicant believes that, after carefully reading the application documents and accurately understanding the realization principle and purpose of the present invention, combined with existing known technologies, those skilled in the art can fully implement the present invention by using their software programming skills. Everything mentioned in the application documents of the present invention belongs to this category, and the applicant will not list them one by one.

[0021] A method for establishing a hail model based on interpolating cohesion between any two units, including the following process:

[0022] 1. Establish a finite element model including the required hail components;

[0023] Crea...

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Abstract

The invention relates to the field of finite element modeling and aims to provide a method for establishing a hail model based on interposition of cohesion between two arbitrary units. The method comprises the processes that a finite element model containing a needed hail component is established; modeling of interposition of cohesion between two arbitrary units is realized based on a PYTHON scripting language of ABAQUS to form a hail model with cohesion units; and the hail mesh model with the cohesion units is used in combination with a composite laminate model to realize finite element simulating calculation of a hail impact composite laminate. The method for establishing the hail model based on interposition of cohesion between two arbitrary units is provided by use of the ABAQUS-PYTHON scripting language. Through the method, the function of interposing cohesion between two arbitrary units, which cannot be achieved through an ABAQUS existing module, can be achieved, the hail model with the cohesion units is established, and efficient modeling based on the scripting language is completely compatible with ABAQUS.

Description

technical field [0001] The invention relates to the field of finite element modeling, in particular to a method for establishing a hail model based on inserting cohesion between any two units. Background technique [0002] Currently, the cohesion model is a widely used and researched computational model in elastic-plastic fracture mechanics. The cohesion model avoids the singularity of crack tip stress in linear elastic fracture mechanics, and calculates the stress and fracture energy during the cracking process, making it widely valued and used in the fields of crack propagation, delamination and debonding of composite materials, and device bonding. . [0003] At present, the cohesive force interface unit based on the cohesive force model has been embedded in the ABAQUS commercial finite element software. Based on the CAE modeling function of the ABAQUS finite element software, the cohesive force interface unit can be inserted between the internal surfaces of the model. Th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 郑津洋廖斌斌顾超华花争立
Owner ZHEJIANG UNIV
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