CN115795708A - Method and device for simulating appearance of wind power blade trailing edge bonding angle mold - Google Patents
Method and device for simulating appearance of wind power blade trailing edge bonding angle mold Download PDFInfo
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- CN115795708A CN115795708A CN202211371709.3A CN202211371709A CN115795708A CN 115795708 A CN115795708 A CN 115795708A CN 202211371709 A CN202211371709 A CN 202211371709A CN 115795708 A CN115795708 A CN 115795708A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention provides a method and a device for simulating the appearance of a wind power blade trailing edge bonding angle die, wherein the method comprises the following steps: the method comprises the steps of obtaining the three-dimensional shape of the wind power blade, cutting a plurality of sections parallel to the end face of a blade root in the three-dimensional shape at the same intervals, taking a rear edge parting line as a starting point according to the sections, cutting a plurality of points at equal intervals on the section outline towards the front edge direction, obtaining coordinates of corresponding points, constructing a rear edge layering simulation mathematical model, adopting the rear edge layering simulation mathematical model according to layering information and the structural adhesive size of a rear edge bonding angle area of the blade, deviating the corresponding points on the section outline to obtain the coordinates after deviation of each section bonding angle area, fitting each section of the bonding angle area into a spline curve according to the deviated coordinates, fitting to obtain a spline surface, and obtaining the shape of the rear edge bonding angle mould. The invention can quickly simulate the appearance of the rear edge bonding angle die, realize the accurate bonding of the bonding angle and ensure the quality of the finished wind power blade.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a method and a device for simulating the appearance of a wind power blade trailing edge bonding angle mold.
Background
Wind power generation needs to be realized through the wind power blade, and when the wind power blade is manufactured, the SS surface and the PS surface need to be respectively subjected to vacuum infusion molding, and then the SS surface and the PS surface are bonded into a whole through die assembly bonding. In the process of die assembly bonding, the space from the hand-pasting reinforcement end position of the leaf root section to the rear edge cavity of the die assembly core material initial position area is large, so that a bonding angle is needed to assist the bonding of the SS surface and the PS surface.
The bonding angle die is used as a key die for bonding the blade, and has great influence on the service life of the blade. The rear edge area comprises the skin, the blade root reinforcing layer, the rear edge UD, the core material and the like, paving is complex, and the bonding angle mould is not manufactured by a proper method, so that the bonding angle mould in the prior art has large quality difference and long manufacturing time, the rear edge bonding angle cannot be accurately bonded, and the quality of a finished product of the wind power blade cannot be ensured.
Therefore, a method for accurately simulating the appearance of the blade rear edge bonding angle die is needed, which can quickly simulate the rear edge bonding angle die, realize accurate bonding of the wind power blade rear edge bonding angle and ensure the quality of wind power blade finished products.
Disclosure of Invention
In view of the above, it is necessary to provide a method and a device for simulating the shape of a bonding angle mold of a trailing edge of a wind turbine blade.
A wind power blade trailing edge bonding angle mould appearance simulation method includes the following steps: the method comprises the steps of obtaining the three-dimensional appearance of a wind power blade, and cutting a plurality of sections parallel to the end face of a blade root in the three-dimensional appearance at the same interval; according to the plurality of sections, taking a trailing edge parting line as a starting point, cutting a plurality of points on the section outline at equal intervals towards the leading edge direction, acquiring coordinates of corresponding points, and constructing a trailing edge ply simulation mathematical model according to the coordinates of the cut points; according to the layering information of the trailing edge position of the blade and the size of the structural adhesive, adopting the trailing edge layering simulation mathematical model to offset corresponding points on the section outline to obtain the offset coordinates of each section bonding angle area; fitting each section of the bonding angle area into a spline curve according to the shifted coordinates, fitting a spline surface according to the spline curve of each section, and acquiring the shape of the rear edge bonding angle mold according to the spline surface.
In one embodiment, the step of, according to the plurality of cross sections, taking the trailing edge parting line as a starting point, cutting a plurality of points on the cross section profile at equal intervals in the direction of the leading edge, obtaining coordinates of corresponding points, and constructing a trailing edge ply simulation mathematical model according to the coordinates of the cut points specifically includes: according to the plurality of sections, taking a trailing edge parting line as a starting point, and cutting a plurality of points at equal intervals on the sections towards the leading edge direction; let the coordinates of two adjacent points be A k (x k ,y k )、A k+1 (x k+1 ,y k+1 ) And constructing a trailing edge ply simulation mathematical model according to the coordinates, wherein the model comprises the following steps:
in the formula (I), the compound is shown in the specification,
t is the thickness of a single paving layer of the wind power blade paving layer, and alpha is an included angle between a connecting line between two points and a horizontal axis.
In one embodiment, the ply information includes all plies, ply positioning information, ply type, and single ply design thickness; the size of the structural adhesive comprises the design width of the structural adhesive and the design thickness of the structural adhesive.
In one embodiment, the bonding angle is located in the SS plane or the PS plane.
A wind power blade trailing edge bonding angle mould appearance simulation device is used for achieving the wind power blade trailing edge bonding angle mould appearance simulation method, and comprises the following steps: the section intercepting module is used for acquiring the three-dimensional appearance of the wind power blade and intercepting a plurality of sections parallel to the end face of the blade root in the three-dimensional appearance at the same interval; the simulation model building module is used for cutting a plurality of points at equal intervals in the direction of the front edge on the profile of the cross section by taking the trailing edge parting line as a starting point according to the plurality of cross sections to obtain the coordinates of the corresponding points, and building a trailing edge ply simulation mathematical model according to the coordinates of the cut points; the coordinate offset module is used for adopting the trailing edge ply simulation mathematical model according to ply information of the trailing edge position of the blade and the size of the structural adhesive to offset corresponding points on the section outline so as to obtain the offset coordinates of each section bonding angle area; and the mold shape obtaining module is used for fitting each section of the bonding angle area into a spline curve according to the shifted coordinates, fitting the spline curve of each section into a spline surface, and obtaining the shape of the rear edge bonding angle mold according to the spline surface.
Compared with the prior art, the invention has the advantages and beneficial effects that: the three-dimensional shape of the wind power blade is obtained, a plurality of sections parallel to the end face of the blade root are cut out in the three-dimensional shape at the same intervals, a plurality of points are cut out at equal intervals in the front edge direction on the section outline by taking the rear edge parting line as a starting point according to the sections, the coordinates of the corresponding points are obtained, a rear edge paving layer simulation mathematical model is built according to the coordinates of the cut-out points, the rear edge paving layer simulation mathematical model is adopted according to the paving layer information and the structural adhesive size of the rear edge position of the blade, the corresponding points are deviated on the section outline, the coordinates of each section bonding angle region after deviation are obtained, each section of the bonding angle region is fitted into a spline curve according to the deviated coordinates, a spline curve is fitted according to the spline curve of each section, the shape of the rear edge bonding angle mold is obtained according to the spline curve, the quick simulation of the rear edge bonding angle mold can be realized, the working efficiency is improved, the mold prepared through the simulation result can realize the accurate bonding of the rear edge bonding angle of the wind power blade, and the finished product quality of the wind power blade is ensured.
Drawings
FIG. 1 is a schematic flow chart of a method for simulating the appearance of a wind turbine blade trailing edge bonding angle mold in one embodiment;
FIG. 2 is a schematic diagram of a point of intersection in cross section in one embodiment;
FIG. 3 is a schematic representation of a trailing edge ply simulation model according to one embodiment;
FIG. 4 is a schematic view of a trailing edge bond angle mold profile as simulated in one embodiment;
FIG. 5 is a schematic structural diagram of a wind turbine blade trailing edge bonding angle mold appearance simulation device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by the following detailed description in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, as shown in fig. 1, a wind turbine blade trailing edge bonding angle mold shape simulation method is provided, and includes the following steps:
step S101, obtaining a three-dimensional shape of the wind power blade, and cutting a plurality of sections parallel to the end face of the blade root in the three-dimensional shape at the same intervals.
Specifically, the three-dimensional shape of the wind power blade is obtained according to a design drawing of the wind power blade, and a plurality of sections parallel to the blade root section are cut out at the same intervals in three-dimensional software through an automatic development program.
And S102, according to the plurality of cross sections, taking the trailing edge parting line as a starting point, cutting a plurality of points at equal intervals in the direction of the leading edge to obtain coordinates of corresponding points, and constructing a trailing edge ply simulation mathematical model according to the coordinates of the cut points.
Specifically, according to the obtained multiple cross sections, taking the trailing edge parting line as a starting point, cutting multiple points in one cross section in the leading edge direction according to a preset distance, as shown in fig. 2, obtaining coordinates of corresponding points, and constructing a trailing edge ply simulation mathematical model according to the coordinates of all the points obtained through cutting, so as to offset the coordinate points.
As shown in fig. 3, step S102 specifically includes: according to the plurality of sections, taking the trailing edge parting line as a starting point, and cutting a plurality of points at equal intervals on the sections towards the leading edge direction; let the coordinates of two adjacent points be A k (x k ,y k )、A k+1 (x k+1 ,y k+1 ) And constructing a trailing edge layering simulation mathematical model according to the coordinates of two adjacent points, wherein the model comprises the following steps:
in the formula (I), the compound is shown in the specification,
t is the single-layer thickness of the wind power blade layer, and alpha is the included angle between the connecting line between the two points and the horizontal axis.
Specifically, according to the obtained multiple cross sections, taking the trailing edge parting line as a starting point, cutting multiple points at equal intervals in the direction of the leading edge on each cross section, for example, setting the interval to be 1mm, obtaining coordinates of the corresponding points, and according to the position relation between two adjacent points, combining the single-layer thickness of the wind power blade layer, constructing a trailing edge layer simulation mathematical model, so that the trailing edge layer can be simulated according to the trailing edge layer simulation mathematical model, and the shape of the bonding angle mould can be obtained.
And S103, according to the layering information of the trailing edge position of the blade and the size of the structural adhesive, adopting a trailing edge layering simulation model, and offsetting corresponding points on the section profile to obtain the offset coordinates of each section bonding angle area.
Specifically, according to the layer laying information and the structural adhesive size of the blade trailing edge, for example, information such as all layers, layer laying types, single layer laying design thickness, structural adhesive design width and design thickness of the bonding angle area of the blade trailing edge, points intercepted on the cross section are shifted by adopting a trailing edge layer laying simulation model, and coordinates of each cross section bonding angle area after shifting are obtained, so that the accuracy of the simulation of the shape of the bonding angle mould is improved, the fitting of the shape of the trailing edge bonding angle mould can be carried out according to the coordinates of the bonding angle area after shifting, the shape of a more accurate trailing edge grinding tool at the bonding angle is obtained, and the realization is facilitated.
Wherein the bonding angle is located on the SS plane or the PS plane.
In one embodiment, the bonding angle can be located on the SS surface or the PS surface, taking the bonding angle on the SS surface as an example, the geometric shape of the bonding angle mold is determined by the trailing edge ply of the PS surface, the thickness and the width of the structural adhesive, a plurality of cross sections are cut at equal intervals on the PS surface, in one cross section, a plurality of points are cut at equal intervals in the direction of the leading edge of the PS surface by taking the trailing edge parting line as a starting point, and coordinates of the corresponding points are obtained and used for constructing a trailing edge ply simulation mathematical model.
Wherein the paving information comprises all pavements, positioning information of the pavements, paving types and design thickness of a single paving layer; the structural adhesive size comprises a structural adhesive design width and a structural adhesive design thickness.
And step S104, fitting each section of the bonding angle area into a spline curve according to the shifted coordinates, fitting a spline surface according to the spline curve of each section, and obtaining the shape of the rear edge bonding angle mould according to the spline surface.
Specifically, after coordinate offset is performed on all the intercepted points through the trailing edge laying layer simulation model, in three-dimensional software, all the sections acquired in the bonding angle area are fitted into spline curves according to the offset coordinates, and the spline curves of all the sections are fitted into spline curved surfaces, so that the shape of the trailing edge bonding angle mold which can be used for production is obtained, as shown in fig. 4, and therefore rapid simulation of the shape of the trailing edge bonding angle mold is achieved, the trailing edge bonding angle mold can be directly used for production, and production efficiency is improved.
In one embodiment, the method is applied and verified in new product development, the bonding of the rear edge of the wind power blade is facilitated, and the new product development period is greatly shortened.
In the embodiment, the three-dimensional shape of the wind power blade is obtained, a plurality of sections parallel to the end face of the blade root are cut out from the three-dimensional shape at the same intervals, a plurality of points are cut out at equal intervals in the direction of the front edge on the section outline according to the plurality of sections, coordinates of corresponding points are obtained, a rear edge laying layer simulation mathematical model is constructed according to the coordinates of the cut-out points, the corresponding points are shifted on the section outline according to the laying layer information and the structural adhesive size of the rear edge position of the blade, the rear edge laying layer simulation mathematical model is adopted, the coordinates of each section bonding angle area after shifting are obtained, each section of the bonding angle area is fitted into a spline curve according to the shifted coordinates, the spline curve of each section is fitted, the shape of the rear edge bonding angle mold is obtained according to the spline curve, the quick simulation can be carried out on the rear edge bonding angle mold, the working efficiency is improved, the mold prepared through the simulation result can realize the accurate bonding of the rear edge bonding angle of the wind power blade, and the finished product quality of the wind power blade is ensured.
As shown in fig. 5, a wind turbine blade trailing edge bonding angle mold appearance simulation device 50 is provided, for implementing the wind turbine blade trailing edge bonding angle mold appearance simulation method, including: a section cutting module 51, a simulation model building module 52, a coordinate shifting module 53 and a mold profile obtaining module 54, wherein:
the section intercepting module 51 is used for acquiring the three-dimensional appearance of the wind power blade and intercepting a plurality of sections parallel to the end face of the blade root in the three-dimensional appearance at the same interval;
the simulation model building module 52 is used for cutting a plurality of points at equal intervals in the direction of the front edge on the profile of the cross section by taking the trailing edge parting line as a starting point according to the plurality of cross sections to obtain the coordinates of the corresponding points, and building a trailing edge ply simulation mathematical model according to the coordinates of the cut points;
the coordinate offset module 53 is used for offsetting corresponding points on the section profile by adopting a trailing edge ply simulation mathematical model according to ply information of the trailing edge position of the blade and the size of the structural adhesive to obtain the offset coordinate of each section bonding angle area;
and the mold shape obtaining module 54 is configured to fit each section of the bonding angle region to a spline curve according to the shifted coordinates, fit the spline curve of each section to a spline surface, and obtain the shape of the die for the bonding angle at the trailing edge according to the spline surface.
In the embodiment, the three-dimensional shape of the wind power blade is obtained through the section intercepting module 51, and a plurality of sections of which the three-dimensional shape is parallel to the end surface of the blade root are intercepted at the same interval in three-dimensional software; the simulation model building module 52 is used for cutting a plurality of points on the profile of the section based on a plurality of sections by taking the rear edge parting line as a starting point, building a rear edge ply simulation mathematical model according to the coordinates of the cut points, and is used for carrying out ply simulation of a rear edge bonding angle area, fitting each section of the bonding angle area into a spline curve according to the deviated coordinates and the structural adhesive size through the coordinate deviation module 53, and obtaining a spline surface according to all the spline curve fitting by adopting the rear edge ply simulation mathematical model and deviating the corresponding points on the profile of the section to obtain the deviated coordinates of each section bonding angle area through the mold shape obtaining module 54, so that the shape of the rear edge bonding angle mold is obtained, the rapid simulation of the bonding angle mold is realized, the working efficiency is improved, the simulation model can be used for precise bonding of the rear edge bonding angle, and the finished product quality of the wind power blade is ensured.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented in a general purpose computing device, they may be centralized in a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disk, optical disk) for execution by a computing device, and in some cases, the steps shown or described may be performed in an order different from that described herein, or they may be separately fabricated as individual integrated circuit modules, or multiple ones of them may be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
Claims (5)
1. A wind power blade trailing edge bonding angle mould appearance simulation method is characterized by comprising the following steps:
the method comprises the steps of obtaining the three-dimensional appearance of a wind power blade, and cutting a plurality of sections parallel to the end face of a blade root in the three-dimensional appearance at the same interval;
according to the plurality of sections, taking a trailing edge parting line as a starting point, cutting a plurality of points on the section outline at equal intervals towards the leading edge direction, acquiring coordinates of corresponding points, and constructing a trailing edge ply simulation mathematical model according to the coordinates of the cut points;
according to the layering information of the trailing edge position of the blade and the size of the structural adhesive, adopting the trailing edge layering simulation mathematical model, and offsetting corresponding points on the section profile to obtain the offset coordinates of each section bonding angle area;
fitting each section of the bonding angle area into a spline curve according to the shifted coordinates, fitting the spline curve of each section into a spline curved surface, and acquiring the shape of the rear edge bonding angle mould according to the spline curved surface.
2. The wind turbine blade trailing edge bonding angle mold shape simulation method according to claim 1, wherein a plurality of points are cut at equal intervals in the direction of the leading edge on the profile of the section by taking a trailing edge parting line as a starting point according to the plurality of sections, coordinates of the corresponding points are obtained, and a trailing edge ply simulation mathematical model is constructed according to the coordinates of the cut points, specifically comprising:
according to the plurality of sections, taking a trailing edge parting line as a starting point, and cutting a plurality of points at equal intervals on the sections towards the leading edge direction;
let the coordinates of two adjacent points be A k (x k ,y k )、A k+1 (x k+1 ,y k+1 ) And constructing a trailing edge layer simulation mathematical model according to the coordinates of the two adjacent points, wherein the model comprises the following steps:
in the formula (I), the compound is shown in the specification,
t is the thickness of a single paving layer of the wind power blade paving layer, and alpha is an included angle between a connecting line between two points and a horizontal axis.
3. The method for simulating the shape of the wind power blade trailing edge bonding angle mold according to claim 1, wherein the paving information comprises all paving layers, positioning information of the paving layers, paving layer types and design thickness of single paving layer; the size of the structural adhesive comprises the design width of the structural adhesive and the design thickness of the structural adhesive.
4. The wind turbine blade trailing edge bonding angle mold shape simulation method according to claim 1, wherein the bonding angle is located on an SS plane or a PS plane.
5. A wind power blade trailing edge bonding angle die appearance simulation device is characterized in that the wind power blade trailing edge bonding angle die appearance simulation method is used for achieving any one of claims 1-4, and comprises the following steps:
the section intercepting module is used for acquiring the three-dimensional appearance of the wind power blade and intercepting a plurality of sections parallel to the end face of the blade root in the three-dimensional appearance at the same interval;
the simulation model building module is used for cutting a plurality of points at equal intervals in the direction of the front edge on the profile of the cross section by taking the trailing edge parting line as a starting point according to the plurality of cross sections to obtain the coordinates of the corresponding points, and building a trailing edge ply simulation mathematical model according to the coordinates of the cut points;
the coordinate offset module is used for adopting the trailing edge ply simulation mathematical model to offset corresponding points on the section outline according to ply information and the structural adhesive size of the trailing edge position of the blade so as to obtain the offset coordinates of each section bonding angle area;
and the mold shape obtaining module is used for fitting each section of the bonding angle area into a spline curve according to the shifted coordinates, fitting the spline curve of each section into a spline surface, and obtaining the shape of the rear edge bonding angle mold according to the spline surface.
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| CN202211371709.3A CN115795708A (en) | 2022-11-03 | 2022-11-03 | Method and device for simulating appearance of wind power blade trailing edge bonding angle mold |
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| CN202211371709.3A CN115795708A (en) | 2022-11-03 | 2022-11-03 | Method and device for simulating appearance of wind power blade trailing edge bonding angle mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117390721A (en) * | 2023-12-11 | 2024-01-12 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
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2022
- 2022-11-03 CN CN202211371709.3A patent/CN115795708A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117390721A (en) * | 2023-12-11 | 2024-01-12 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
| CN117390721B (en) * | 2023-12-11 | 2024-04-16 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
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