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Computing method for hub ultimate strength of wind turbine generator system

A technology of wind turbines and ultimate strength, applied in calculation, electrical digital data processing, special data processing applications, etc., can solve problems such as difficult to calculate accurately, cannot be accurately found, and the state of force is complicated, so as to improve calculation efficiency , Save calculation time, save cost

Inactive Publication Date: 2013-10-23
CHINA CREATIVE WIND ENERGY +3
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Problems solved by technology

[0002] The original calculation of the strength of the hub is to use engineering algorithms to calculate whether the strength of the overall hub meets the requirements. If it does not meet the design requirements, it needs to be thickened as a whole. However, the shape of the hub is complex and the state of the force is also very complicated. The engineering algorithm The calculation process is more complicated, it is difficult to calculate accurately, and it is impossible to accurately find its weakest part

Method used

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  • Computing method for hub ultimate strength of wind turbine generator system
  • Computing method for hub ultimate strength of wind turbine generator system
  • Computing method for hub ultimate strength of wind turbine generator system

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Embodiment

[0025] Embodiment: the calculation method of the present invention adopts ANSYS (finite element analysis software) as implementation tool, builds a model, defines each component material attribute, calculates, draws deformation and stress nephogram, comprises the following steps:

[0026] The first step, the modeling process is as follows:

[0027] (1) Draw the three-dimensional model of the hub through the existing engineering software, import it into the finite element software platform, and draw the partial three-dimensional solid model of the connection between the blade 2 and the hub 1, and the main shaft 3 and the hub 1 in the finite element software;

[0028] (2) Set the material properties of blade 2, main shaft 3 and hub 1, including the elastic modulus and Poisson's ratio of the material; establish its finite element model, such as figure 1 As shown, the blade 2, the main shaft 3 and the hub 1 are rigidly coupled; determine the overall coordinate system of the hub 1,...

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Abstract

A computing method for hub ultimate strength of a wind turbine generator system belongs to the technical field of wind power generation, and comprises the following steps: modeling by adopting software of finite element analysis, performing finite element mesh generation, setting constraint conditions and computing to obtain a deformation and stress cloud chart. The modeling process is as follows: 1, drawing a 3D model for a hub, importing the 3D model into a finite element software platform, and drawing a 3D entity model for the connection part of blades and the hub and the connection part of a main shaft and the hub in the finite element software; 2, setting material attributes for the blades, the main shaft and the hub, establishing a finite element model thereof, rigidly coupling the blades, the main shaft and the hub, and determining an overall coordinate system of the hub; 3, establishing nodes at root parts of the hub and each blade, converting the nodes into a blade root coordinate system specified by Germanischer Lloyd, then rigidly coupling the nodes to the blades, so that the load can be transmitted to the hub through the blades. The computing method facilitates accurate computation of strength performance of the hub, saves the computing time and improves the computing efficiency.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to a method for calculating the ultimate strength of a hub of a wind power generating set. Background technique [0002] The original calculation of the strength of the hub is to use engineering algorithms to calculate whether the strength of the overall hub meets the requirements. If it does not meet the design requirements, it needs to be thickened as a whole. However, the shape of the hub is complex and the state of the force is also very complicated. The engineering algorithm The calculation process is more complicated, it is difficult to calculate accurately, and it is impossible to accurately find its weakest part. Contents of the invention [0003] In view of the above existing problems, the present invention provides a method for calculating the ultimate strength of the hub of a wind power generating set, which is calculated by finite element analysis softwar...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 唐蕾刘衍选蔡晓峰赵炳胜
Owner CHINA CREATIVE WIND ENERGY
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