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Cabin cover rigidity and stability determination method

A determination method and nacelle cover technology, applied in computer-aided design, special data processing applications, instruments, etc., can solve problems such as inaccurate calculations and few applications, and achieve accurate calculation results, real force conditions, and reasonable judgment methods Effect

Pending Publication Date: 2019-07-05
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 the nacelle cover of a wind turbine. The present invention is based on the composite material finite element simulation technology and is used to solve the problems of few applications and inaccurate calculations in this technical field

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  • Cabin cover rigidity and stability determination method
  • Cabin cover rigidity and stability determination method
  • Cabin cover rigidity and stability determination method

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Embodiment Construction

[0037] The best implementation mode of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0038] A method for determining the stiffness and stability of a nacelle cover of the present invention comprises the following steps:

[0039] 1. Establish the geometric model of the wind turbine nacelle cover, such as figure 1 , 2 As shown, it includes a cover shell 1 made of fiberglass composite material, a steel structure 4 inside the cover shell, a guardrail 2 and an anemometer 3 fixed on the top of the cover shell, wherein the wind turbine nacelle cover is integrally fixed on the base, and the cover body The shell 1 and the steel structure 4 are bonded to each other.

[0040] 2. Properly simplify the geometric model of the wind turbine nacelle cover, delete small threaded holes and chamfers; import the three-dimensional geometric model of the wind turbine nacelle cover into the finite element analysis software ANSYS Workbenc...

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Abstract

The invention provides a cabin cover rigidity and stability determination method. The method comprises the steps of establishing a three-dimensional geometric model of a cabin cover of a wind turbinegenerator; importing the three-dimensional geometric model into the finite element analysis software, and carrying out lamination modeling on the housing of the cover body; defining the material attributes and section attributes of each component of the cabin cover, and establishing a finite element model of the cabin cover of the wind turbine generator; applying boundary conditions and loads to the finite element model of the wind turbine generator cabin cover; calculating the maximum deformation value and the minimum buckling factor of the cabin cover of the wind turbine generator; 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,the composite material lamination modeling is carried out, the 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, so that 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 nacelle cover. 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 to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 王杰孟庆鑫李壮睢广坤
Owner NANJING ZHONGREN ENERGY TECH
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