Method for analyzing microscomic mechanical damage evolution of fan blade composite material

A composite material and analysis method technology, applied in the field of microscopic mechanical damage evolution analysis of wind turbine blade composite materials, to achieve the effect of ensuring randomness and accuracy

Pending Publication Date: 2019-08-27
XINJIANG UNIVERSITY
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However, for the current modeling technology, the model still has certain problems when combined with discre

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  • Method for analyzing microscomic mechanical damage evolution of fan blade composite material
  • Method for analyzing microscomic mechanical damage evolution of fan blade composite material
  • Method for analyzing microscomic mechanical damage evolution of fan blade composite material

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Embodiment Construction

[0082] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0083] see Figure 1~4-7 , In the embodiment of the present invention, the method for analyzing the micro-mechanical damage evolution of the composite material of the fan blade, the steps of the method for analyzing the micro-mechanical damage evolution of the composite material of the fan blade of the present invention are as follows:

[0084] S1: Parametric establishment of composite mesoscopic model. According to the periodic dist...

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Abstract

The invention discloses a method for analyzing microscomic mechanical damage evolution of a fan blade composite material. Parametric modeling of the RVE structure model of the representative volume unit is achieved, the accuracy of damage initiation and crack generation of the described composite material component phase and the accuracy of the expansion evolution process are ensured, and for theboundary condition of the RVE model, an Abaqus-Python interface is utilized, periodic boundary conditions of the RVE model are quickly and smoothly applied, and a reasonable microscopic field quantityis obtained; according to the invention, isotropic damage of the matrix is considered; a single damage variable influencing the material rigidity is used; an interface phase is introduced into microscopic damage analysis of a composite material, a damage model is compiled into a UMAT material subprogram in combination with a subprogram interface of Abaqus finite element software, and simulation verification is carried out on the damage process of the blade material under the transverse stretching effect in Abaqus/Standard. The trend and expansion condition of microscopical volume unit interface cracks under the action of transverse tensile load and the influence of periodic temperature on the mechanical response are simulated.

Description

technical field [0001] The invention relates to an analysis method, in particular to a method for analyzing the meso-mechanical damage evolution of a fan blade composite material. Background technique [0002] Fan blade composites are subjected to multiple loads for a long time, and different forms of damage will inevitably occur inside them, such as micro-scale cracking in local areas of the matrix, interfacial debonding at the connection between fibers and matrix, and component phase. long-term interactions, etc. The occurrence of blade damage will have a certain impact on the original strength and stiffness of the composite material, and it is also an important factor affecting the service life of the blade in engineering applications. [0003] 1. Introduction to wind turbine blade damage research [0004] The blade is the component of the wind turbine that directly receives wind energy resources. It is the source component of the wind turbine to generate electricity. I...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/06
Inventor 孙耀宁王国建崔权维海几哲
Owner XINJIANG UNIVERSITY
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