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Fairing rigidity and stability determination method

A determination method and technology of the shroud, which are applied in image data processing, special data processing applications, instruments, etc., can solve the problems of inaccurate calculation and few applications, and achieve accurate calculation results, real force conditions, and reasonable judgment methods. Effect

Inactive Publication Date: 2019-08-06
NANJING ZHONGREN ENERGY TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for calculating the stiffness and stability of wind turbine shrouds. The present invention is based on composite material finite element simulation technology and is used to solve the problems of few applications and inaccurate calculations in this technical field

Method used

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Embodiment Construction

[0036] The best implementation mode of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0037] A method for determining stiffness and stability of a shroud of the present invention comprises the following steps:

[0038] 1. Establish the geometric model of wind turbine shroud, such as figure 1 , 2 As shown, the upper top cover 1, three 1 / 3 pieces 2 and the hatch 3 of the cover body comprising fiberglass composite materials are connected by the flange bolts of the upper top cover and the three 1 / 3 pieces.

[0039] 2. Properly simplify the geometric model of the wind turbine shroud, delete the small threaded holes and chamfers; import the three-dimensional geometric model of the wind turbine shroud into the finite element analysis software ANSYS Workbench. Since the composite material is an orthotropic material, the pre-processing function of the software is used to model the layup of the shroud, such as image 3 As s...

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Abstract

The invention provides a fairing rigidity and stability determination method. The method comprises the steps of establishing a three-dimensional geometric model of a fairing of a wind turbine generator; importing the three-dimensional geometric model into finite element analysis software, and carrying out lamination modeling on the housing of the fairing body; defining material attributes and section attributes of each component of the wind turbine generator set fairing, and establishing a finite element model of the wind turbine generator set fairing; applying boundary conditions and loads tothe finite element model of the wind turbine generator fairing; calculating the maximum deformation value and the minimum buckling factor of the wind turbine generator fairing; and evaluating the rigidity and the stability of the glass fiber reinforced plastic part of the cover body shell through the maximum deformation value and the minimum buckling factor. According to the method, composite material lamination modeling is carried out, material attributes are defined based on the orthogonal anisotropy of materials, the deformation value and the buckling factor are adopted to evaluate the calculation result, the judgment method is more reasonable, and the calculation result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of strength analysis of components of a wind power generating set, and in particular relates to a method for determining the stiffness and stability of a wind deflector. Background technique [0002] With the continuous development of modern society, people's demand for energy is also increasing rapidly. Traditional energy sources of non-renewable energy sources are continuously limited by the environment and the amount of reserves. Countries and governments are actively developing clean and renewable energy to replace traditional non-renewable energy. [0003] Wind energy is an important clean energy, which is of great significance to solving the global environmental and energy crisis. In recent years, encouraged by policies, domestic wind turbines have developed rapidly, and the cumulative installed capacity has exceeded 190 million kilowatts. The safety of the wind turbine is very important. In order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/23
Inventor 王杰孟庆鑫李壮睢广坤
Owner NANJING ZHONGREN ENERGY TECH
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