CN113626949A - Wind power blade mold steel frame design method based on topology and size optimization - Google Patents
Wind power blade mold steel frame design method based on topology and size optimization Download PDFInfo
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Abstract
The invention discloses a wind power blade mould steel frame design method based on topology and size optimization, and relates to the field of design of an offshore wind power mould steel frame supporting structure, wherein the design method comprises the following steps: step a: calculating the load of the mould supporting steel frame; step b: carrying out sectional topological optimization on the mold supporting steel frame, and obtaining an abstract curve of the mold supporting steel frame after topological optimization; step c: constructing an attribute library of the rod pieces and numbering the attribute library of the rod pieces, wherein the attribute library of the rod pieces comprises the materials, the sectional shapes and the sectional sizes of the rod pieces, and the materials, the sectional shapes and the sectional sizes of the connecting rods and the rod pieces in the sectional framework are selected from the attribute library of the rod pieces; and d) constructing an optimization model, and optimizing the materials, the section shapes and the section sizes of the connecting rods and the rod pieces in the section frame by using a genetic algorithm to obtain a proper section size. The method can save the design time of the mold supporting steel frame and save the cost.
Description
Technical Field
The invention relates to the field of design of an offshore wind power mold steel frame supporting structure, in particular to a design method of a wind power blade mold steel frame based on topology and size optimization.
Background
With the progress of wind power technology, the length of the wind power blade becomes longer and longer, however, the production cost of the wind power blade mold shows a trend of decreasing. At the present stage, the wind power blade mould is mainly divided into two parts: glass steel casing and mould support steelframe.
The design of the current domestic wind power blade mould supporting steel frame generally adopts an empirical design method, generally selects the same structural support form according to different blades, utilizes a secondary development technology to draw a mould steel frame abstract curve according to the appearance of a mould structure, and then verifies whether the requirement is met by calculating the strength and the deformation of the mould steel frame through limited analysis. In this design process, the mold manufacturer can only provide a design solution that satisfies the strength and rigidity of the support structure, and this solution is not the globally optimal design solution for the lightest overall support structure. Therefore, a method is needed to improve the design efficiency, obtain the global optimal design scheme with the lightest overall support structure and reduce the production cost.
The current blade mould steelframe is automatic generation through compiling the NX secondary development procedure, according to blade appearance 3D model, the good steelframe bottom surface height of cross-section frame position file setting, automatic generation steelframe and steelframe abstract curve, then according to designer's experience, give the roof beam cross-section to steelframe abstract curve, whether satisfy intensity and rigidity requirement through finite element analysis steelframe at last, if unsatisfied, the analysis limit analysis result adjusts the roof beam cross-section, until satisfying the design requirement. This method is relatively inefficient and relies particularly on the experience of the designer. The designed steel frame supporting structure can meet the design requirements, but is not necessarily an approximately optimal scheme, and the production cost cannot be effectively controlled.
This is mainly due to the lack of systematic mold steel frame design methods.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a wind power blade mould steel frame design method based on topology and size optimization aiming at the defects in the prior art.
The technical scheme is as follows: the wind power blade mould steel frame design method based on topology and size optimization comprises a glass fiber reinforced plastic shell, a section plate and a mould supporting steel frame, wherein the glass fiber reinforced plastic shell is arranged above the mould supporting steel frame, the lower end of the section plate is connected with a section frame, and the upper end of the section plate is connected with the glass fiber reinforced plastic shell;
the mould supporting steel frame comprises a plurality of section frames made of rod pieces, a first top main beam, a second top main beam, a first bottom main beam and a second bottom main beam; a plurality of section frames are arranged at intervals; the upper end of the left side of the cross-section frame is connected with a first top main beam, the lower end of the left side of the cross-section frame is connected with a first bottom main beam, the upper end of the right side of the cross-section frame is connected with a second top main beam, the lower end of the right side of the cross-section frame is connected with a second bottom main beam, and a plurality of inclined connecting rods are arranged between the first top main beam and the first bottom main beam and between the second top main beam and the second bottom main beam;
the design method comprises the following steps:
step a: calculating the load of the mould supporting steel frame:
segmenting the blade mould according to the length of the blade, setting the number of section frames on each section of blade mould, and estimating the weight of the glass fiber reinforced plastic shell, the section panel and the blade on each section of steel frame; constructing an initial space design area of a support structure of the mold support steel frame, and setting the mass of an external load on each section frame;
step b: filling an initial space design area of a support structure of the mold support steel frame by adopting a shell unit, constructing a mold support steel frame structure in a cross-section frame mode, carrying out sectional topological optimization on the mold support steel frame, and obtaining an abstract curve of the mold support steel frame after topological optimization;
step c: constructing an attribute library of the rod pieces and numbering the attribute library of the rod pieces, wherein the attribute library of the rod pieces comprises the materials, the sectional shapes and the sectional sizes of the rod pieces, and the materials, the sectional shapes and the sectional sizes of the connecting rods and the rod pieces in the sectional framework are selected from the attribute library of the rod pieces;
and d) constructing an optimization model, and optimizing the materials, the section shapes and the section sizes of the connecting rods and the rod pieces in the section frame by using a genetic algorithm to obtain a proper section size.
Further, the section frame comprises an upper cross section cross brace, a lower cross section cross brace, three vertical cross section braces, two inclined cross section braces and two upright posts;
the two upright columns are respectively a first upright column and a second upright column, the lower ends of the first upright column and the second upright column are respectively connected with the two ends of the cross-section lower cross brace, the two ends of the cross-section upper cross brace are respectively connected with the middle parts of the first upright column and the second upright column, and the upper end and the lower end of the cross-section vertical brace are respectively connected with the cross-section upper cross brace and the cross-section lower cross brace; the two cross-section inclined struts are arranged above the cross-section upper cross strut, the upper ends of the two cross-section inclined struts are respectively connected with the two upright posts, and the lower ends of the two cross-section inclined struts are connected with the cross-section upper cross strut;
the upper end of the first upright post of each section frame is connected with a first top main beam, and the lower end of the first upright post of each section frame is connected with a first bottom main beam; the upper end of the second upright of each section frame is connected with the second top main beam, and the lower end of the second upright of each section frame is connected with the second bottom main beam.
Further, in step c, the calculation formula of the cross-section frame and the connecting rod considering the problems of multi-material, multi-section shape and discrete size optimization is as follows:
PProp＝[mat，sect，dimen]＝[Prop1，Prop2，...]
X(i)＝[P1，P2，P3，...]
min：m
s.tmat∈[Q235，Q345]
sect∈[a，b]
dimen∈[10×8，....]
Pj∈Propj
S≤180MPa
D≤25mm
where Prop denotes the set of all profile attribute libraries, PropjThe method comprises the following steps of (1) representing a material and section shape attribute library of a rod piece j, wherein j represents a connecting rod, a section upper cross brace, a section lower cross brace, a section vertical brace, a section diagonal brace and an upright post; mat represents a material library, sect represents a cross-sectional shape library, and dime represents a cross-sectional dimension library; x (i) represents a design; p is a radical ofjThe properties of the rod j including the combined variables of material, cross-sectional shape and cross-sectional dimension variables to determine the state of the rod j are represented, D represents the deformation of the entire structure, and S represents the maximum combined stress of the entire structure.
Further, in the step a, the mold support steel frame is divided into four sections, namely a first section steel frame, a second section steel frame, a third section steel frame and a fourth section steel frame, the number of the section frames on the first section steel frame is 10, the number of the section frames on the second section steel frame is 8, the number of the section frames on the third section steel frame is 12, and the number of the section frames on the fourth section steel frame is 12.
Further, the topology optimization method of the first steel frame section comprises the following steps:
before topological optimization, static analysis is carried out, a shell unit is made of steel, the model is Q235, the unit thickness is 4mm, a first section of steel frame is fixedly restrained, external load is applied to the upper boundary of a cross section frame of a design area, namely the upper boundary of the cross section of the first section of steel frame, the fixed area, the load loading area, the first top main beam, the second top main beam, the first bottom main beam and the second bottom main beam in a first section of initial design space are excluded from the design area, and topological optimization is carried out by taking minimum strain energy as a target;
the topological optimization method of the second section of steel frame, the third section of steel frame and the fourth section of steel frame is the same as that of the first section of steel frame.
Further, in the step d, the genetic algorithm is a constrained genetic algorithm.
Further, the optimized parameter values are as follows: the selection mode is roulette, the crossing mode is two-point crossing, the mutation mode is a mutation operator of a binary chromosome, the crossing probability is 0.7, the mutation probability is 0.1, the maximum iteration number is 200, and the population size is 100, so that the optimization result is obtained.
Has the advantages that:
1) the design method of the invention uses finite element simulation technology, carries out topology optimization on the mould supporting steel frame by continuously adjusting the number and the segmentation of the section frames, follows the induction geometric characteristic criterion, draws a steel frame abstract curve, groups each rod piece in the mould supporting steel frame, selects a respective attribute library in each group, takes the serial number of the attribute library as a design variable, takes the maximum combination stress and the integral deformation of each rod piece as a state variable, takes the quality of the whole structure as a target function, directly uses a genetic algorithm with constraint to carry out optimization, and finally obtains the attribute of each rod piece in the mould supporting steel frame. Compared with the existing mold supporting steel frame structure, the mold steel frame design time can be saved, the cost is reduced, the design efficiency is improved, and an approximately optimal scheme is obtained.
2) Compared with the original steel frame designed by experience, the topological optimization of the blade mold supporting steel frame can fully exert the mechanical property of the material.
3) The segmented topology optimization is carried out on the mold supporting steel frame, and the requirement on computer hardware can be reduced.
Drawings
FIG. 1 is a schematic sectional view of a wind turbine blade mold;
FIG. 2 is a schematic view of a connection structure of adjacent section frames;
FIG. 3 is an initial spatial design area of a support structure of a mold support steel frame;
FIG. 4 is an initial design area of a support structure for a first section of a mold support steel frame;
FIG. 5 is a schematic view of the first section of steel frame at a fixed restraint and load application position;
FIG. 6 is a topological geometry after optimization of a first section of steel frame;
FIG. 7 is a mold support steel frame abstract curve;
FIG. 8a is a schematic drawing showing the dimension of a thin-walled circular tube;
FIG. 8b is a schematic drawing showing dimensions of a rectangular hollow tube;
FIG. 9a is a displacement cloud of an empirical design method;
FIG. 9b is a maximum combined stress cloud for the empirical design method;
FIG. 9c is a displacement cloud of the design method of the present invention;
FIG. 9d is a cloud of maximum combined stresses for the design method of the present invention;
FIG. 10 is a technical route of a genetic algorithm;
in the figure, a glass fiber reinforced plastic shell-1; a section plate-2; a mould supporting steel frame-3; cross-section upper wale-31; cross-section lower cross-brace-32; a cross section vertical support-33; cross-section diagonal-34; column-35; a connecting rod-4; a first top main girder-51; a second top main girder-52; a first bottom main beam-53; a second bottom main beam-54.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
In the invention, the blade mould comprises a glass fiber reinforced plastic shell 1, a section plate 2 and a mould supporting steel frame 3, wherein the section of the blade mould is shown in figure 1; the glass fiber reinforced plastic shell 1 is arranged above the mold supporting steel frame 3, the lower end of the section plate 2 is connected with the section frame 3, and the upper end of the section plate is connected with the glass fiber reinforced plastic shell 1;
the mould supporting steel frame comprises a plurality of section frames 3 made of rod materials, a first top main beam 51, a second top main beam 52, a first bottom main beam 53 and a second bottom main beam 54;
as shown in fig. 2, the section frame 3 includes a section upper cross brace 31, a section lower cross brace 32, three section vertical braces 33, two section diagonal braces 34, and two upright posts 35; the two upright columns 35 are respectively a first upright column and a second upright column, the lower ends of the first upright column and the second upright column are respectively connected with the two ends of the cross-section lower cross brace 32, the two ends of the cross-section upper cross brace 31 are respectively connected with the middle parts of the first upright column and the second upright column, and the upper end and the lower end of the cross-section vertical brace 33 are respectively connected with the cross-section upper cross brace 31 and the cross-section lower cross brace 32; the two cross-section inclined struts 34 are arranged above the cross-section upper cross strut 31, the upper ends of the two cross-section inclined struts 34 are respectively connected with the two upright posts 35, and the lower ends of the two cross-section inclined struts 34 are connected with the cross-section upper cross strut 31;
the plurality of section frames 3 are arranged at intervals, the upper end of a first upright post of each section frame 3 is connected with a first top main beam 51, and the lower end of the first upright post of each section frame 3 is connected with a first bottom main beam 53; the upper end of the second upright post of each section frame 3 is connected with a second top main beam 52, and the lower end of the second upright post of each section frame 3 is connected with a second bottom main beam 54;
a plurality of inclined connecting rods are arranged between the first top main beam 51 and the first bottom main beam 53 and between the second top main beam 52 and the second bottom main beam 54;
a design method of a wind power blade mould steel frame based on topology and size optimization comprises the following steps:
step a: calculating the load of the mould supporting steel frame: dividing the blade mould into four sections according to the length of the blade, wherein the four sections are respectively a first section steel frame, a second section steel frame, a third section steel frame and a fourth section steel frame, the number of the section frames on each section of blade mould is set, the number of the section frames on the first section steel frame is 10, the number of the section frames on the second section steel frame is 8, the number of the section frames on the third section steel frame is 12, and the number of the section frames on the fourth section steel frame is 12; constructing an initial spatial design region of the mold-supporting steel frame support structure, as shown in fig. 3;
estimating the weight of the glass fiber reinforced plastic shell, the section plate and the blade on each section of steel frame; constructing an initial space design area of the mold support steel frame, and setting the mass of an external load on each section frame; the mass of the external load on each section frame is shown in Table 1, Table 1 load loading
| Number of section frame | Single section frame loading mass/ |
| 1 | 223.7 |
| 2 | 298.0 |
| 3 | 404.3 |
| 4 | 563.8 |
| 5 | 752.2 |
| 6 | 351.3 |
| 7 | 217.3 |
| 8 | 389.3 |
| … | … |
| 39 | 218.7 |
Step b: performing segmented topological optimization on the mold supporting steel frame, filling a design area of the mold supporting steel frame with shell units, and constructing a mold supporting steel frame structure in a form of a cross-section frame;
the topology optimization method of the first section of steel frame is as follows:
before topology optimization is carried out, static analysis is carried out, a shell unit replaces a section frame, the shell unit is made of steel, the model is Q235, the thickness of the unit is 4mm, a first section of steel frame is fixedly constrained, an external load is applied to the upper boundary of the section frame of a design area, the upper boundary of the section of the first section of steel frame is shown in FIG. 5, the position A in the figure is a fixed constraint position, and the position B in the figure is a load application position; and excluding the fixed area, the load loading area, the first top main beam, the second top main beam, the first bottom main beam and the second bottom main beam in the first section of initial design space from the design area, and performing topology optimization with the minimum strain energy as a target, wherein the topological geometric form of the first section of steel frame of the first-stage steel frame after optimization is shown in fig. 6.
The topological optimization method of the second section of steel frame, the third section of steel frame and the fourth section of steel frame is the same as that of the first section of steel frame.
According to the topological optimization analysis result, a direction is provided for the optimization design of a new structure, the mold supporting steel frame structure is constructed in a section frame mode according to the generalized geometric characteristic criterion and considering the practical operation feasibility of the project, and the mold supporting steel frame abstract curve is shown in fig. 7.
Step c: constructing and numbering an attribute library of the rod piece, wherein the attribute library of the rod piece comprises rod piece materials, cross section shapes and cross section sizes, and selecting the materials, the cross section shapes and the cross section sizes of the connecting rod and a cross section upper cross brace, a cross section lower cross brace, a cross section vertical brace, a cross section diagonal brace and an upright post in the cross section steel frame from the attribute library of the rod piece;
the attribute library of the rod piece is shown in table 2, the sectional dimension of the thin-wall circular tube is marked as shown in fig. 8a, and the sectional dimension of the rectangular hollow tube is marked as shown in fig. 8 b;
TABLE 2 library of rod material, cross-sectional shape, and cross-sectional dimension attributes
In this embodiment, the design schemes of the material, the cross-sectional shape and the cross-sectional dimension of the upper cross brace, the lower cross brace, the vertical cross brace, the diagonal cross brace and the upright post of the cross-section of the connecting rod and the cross-section steel frame are shown in table 3,
TABLE 3 design
In the step c, a calculation formula of the cross-section frame and the connecting rod considering the problems of multi-material, multi-section shape and discrete size optimization is as follows:
Prop＝[mat，sect，dimen]＝[Prop1，Prop2，...]
X(i)＝[P1，P2，P3，...]
min：m
s.t mat∈[Q235，Q345]
sect∈[a，b]
dimen∈[10×8，....]
Pj∈Propj
S≤180MPa
D≤25mm
where Prop denotes the set of all profile attribute libraries, PropjThe method comprises the following steps of (1) representing a material and section shape attribute library of a rod piece j, wherein j represents a connecting rod, a section upper cross brace, a section lower cross brace, a section vertical brace, a section diagonal brace and an upright post; mat representation material librarySect represents a cross-sectional shape library, and dimen represents a cross-sectional size library; x (i) represents a design; p is a radical ofjThe properties of the rod j including the combined variables of material, cross-sectional shape and cross-sectional dimension variables to determine the state of the rod j are represented, D represents the deformation of the entire structure, and S represents the maximum combined stress of the entire structure.
And d) constructing an optimization model, and optimizing the section sizes of the connecting rod, the upper cross brace of the section, the lower cross brace of the section, the vertical cross brace of the section, the diagonal cross brace of the section and the upright post by using a genetic algorithm to obtain a proper section size.
The genetic algorithm is a genetic algorithm with constraints, the technical route of the genetic algorithm is shown in figure 10, and the optimized parameter values are as follows: the selection mode is roulette, the crossing mode is two-point crossing, the mutation mode is a mutation operator of a binary chromosome, the crossing probability is 0.7, the mutation probability is 0.1, the maximum iteration number is 200, and the population size is 100, so that the optimization result is obtained.
In the process of size optimization, the rod pieces in the die supporting steel frame are connected in a mode of a common node provided by ANSYS.
Compared with the original empirically designed steel frame, the mechanical properties of the material can be fully exerted on the topological optimization of the mold supporting steel frame, as shown in fig. 6, the material in the square frame is completely removed, and only the main beam excluded from the designed area is left, which indicates that the material at the place is not important;
FIGS. 9a, 9b, 9c, and 9d are displacement clouds and maximum combined stress clouds of an empirical design and design method of the present invention;
the deformation of the whole structure designed by the method is larger than the empirical design 2.7mm, the maximum combined stress is slightly larger than the empirical design 6MPa, but the design results of the design method of the invention meet the requirements, the mass of the steel frame designed by the empirical design is 18474kg, and the mass of the steel frame designed by the method is 16593kg, which is reduced by about 10%.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The wind power blade mould steel frame design method based on topology and size optimization comprises a glass fiber reinforced plastic shell, a section plate and a mould supporting steel frame, wherein the glass fiber reinforced plastic shell is arranged above the mould supporting steel frame, the lower end of the section plate is connected with a section frame, and the upper end of the section plate is connected with the glass fiber reinforced plastic shell;
the mould supporting steel frame comprises a plurality of section frames made of rod pieces, a first top main beam, a second top main beam, a first bottom main beam and a second bottom main beam; a plurality of section frames are arranged at intervals; the upper end of the left side of the cross-section frame is connected with a first top main beam, the lower end of the left side of the cross-section frame is connected with a first bottom main beam, the upper end of the right side of the cross-section frame is connected with a second top main beam, the lower end of the right side of the cross-section frame is connected with a second bottom main beam, and a plurality of inclined connecting rods are arranged between the first top main beam and the first bottom main beam and between the second top main beam and the second bottom main beam;
the design method is characterized by comprising the following steps:
step a: calculating the load of the mould supporting steel frame:
segmenting the blade mould according to the length of the blade, setting the number of section frames on each section of blade mould, and estimating the weight of the glass fiber reinforced plastic shell, the section panel and the blade on each section of steel frame; constructing an initial space design area of a support structure of the mold support steel frame, and setting the mass of an external load on each section frame;
step b: filling an initial space design area of a support structure of the mold support steel frame by adopting a shell unit, constructing a mold support steel frame structure in a cross-section frame mode, carrying out sectional topological optimization on the mold support steel frame, and obtaining an abstract curve of the mold support steel frame after topological optimization;
step c: constructing an attribute library of the rod pieces and numbering the attribute library of the rod pieces, wherein the attribute library of the rod pieces comprises the materials, the sectional shapes and the sectional sizes of the rod pieces, and the materials, the sectional shapes and the sectional sizes of the connecting rods and the rod pieces in the sectional framework are selected from the attribute library of the rod pieces;
and d) constructing an optimization model, and optimizing the materials, the section shapes and the section sizes of the connecting rods and the rod pieces in the section frame by using a genetic algorithm to obtain a proper section size.
2. The wind power blade mold steel frame design method based on topology and size optimization according to claim 1, wherein the cross-section frame comprises a cross-section upper cross brace, a cross-section lower cross brace, three cross-section vertical braces, two cross-section diagonal braces and two vertical columns;
the two upright columns are respectively a first upright column and a second upright column, the lower ends of the first upright column and the second upright column are respectively connected with the two ends of the cross-section lower cross brace, the two ends of the cross-section upper cross brace are respectively connected with the middle parts of the first upright column and the second upright column, and the upper end and the lower end of the cross-section vertical brace are respectively connected with the cross-section upper cross brace and the cross-section lower cross brace; the two cross-section inclined struts are arranged above the cross-section upper cross strut, the upper ends of the two cross-section inclined struts are respectively connected with the two upright posts, and the lower ends of the two cross-section inclined struts are connected with the cross-section upper cross strut;
the upper end of the first upright post of each section frame is connected with a first top main beam, and the lower end of the first upright post of each section frame is connected with a first bottom main beam; the upper end of the second upright of each section frame is connected with the second top main beam, and the lower end of the second upright of each section frame is connected with the second bottom main beam.
3. The wind turbine blade mold steel frame design method based on topology and size optimization according to claim 2, wherein in step c, the calculation formula of the cross section frame and the connecting rod considering the problems of multi-material, multi-section shape and discrete size optimization is as follows:
PProp＝[mat，sect，dimen]＝[Prop1，Prop2，...]
X(i)＝[P1，P2，P3，...]
min：m
s.tmat∈[Q235，Q345]
sect∈[a，b]
dimen∈[10×8，....]
Pj∈Propj
S≤180MPa
D≤25mm
where Prop denotes the set of all profile attribute libraries, PropjThe method comprises the following steps of (1) representing a material and section shape attribute library of a rod piece j, wherein j represents a connecting rod, a section upper cross brace, a section lower cross brace, a section vertical brace, a section diagonal brace and an upright post; mat represents a material library, sect represents a cross-sectional shape library, and dime represents a cross-sectional dimension library; x (i) represents a design; p is a radical ofjThe properties of the rod j including the combined variables of material, cross-sectional shape and cross-sectional dimension variables to determine the state of the rod j are represented, D represents the deformation of the entire structure, and S represents the maximum combined stress of the entire structure.
4. The wind turbine blade mold steel frame design method based on topology and size optimization according to claim 1, wherein in the step a, the mold support steel frame is divided into four sections, namely a first section steel frame, a second section steel frame, a third section steel frame and a fourth section steel frame, the number of the cross-section frames on the first section steel frame is 10, the number of the cross-section frames on the second section steel frame is 8, the number of the cross-section frames on the third section steel frame is 12, and the number of the cross-section frames on the fourth section steel frame is 12.
5. The wind turbine blade mold steel frame design method based on topology and size optimization according to claim 4, wherein the topology optimization method of the first section of steel frame is as follows:
before topological optimization, static analysis is carried out, a shell unit is made of steel, the model is Q235, the unit thickness is 4mm, a first section of steel frame is fixedly restrained, external load is applied to the upper boundary of a cross section frame of a design area, namely the upper boundary of the cross section of the first section of steel frame, the fixed area, the load loading area, the first top main beam, the second top main beam, the first bottom main beam and the second bottom main beam in a first section of initial design space are excluded from the design area, and topological optimization is carried out by taking minimum strain energy as a target;
the topological optimization method of the second section of steel frame, the third section of steel frame and the fourth section of steel frame is the same as that of the first section of steel frame.
6. The wind turbine blade mold steel frame design method based on topology and size optimization according to claim 1, wherein in the step d, the genetic algorithm is a genetic algorithm with constraints.
7. The wind turbine blade mold steel frame design method based on topology and size optimization according to claim 6, wherein the optimization parameter values are as follows: the selection mode is roulette, the crossing mode is two-point crossing, the mutation mode is a mutation operator of a binary chromosome, the crossing probability is 0.7, the mutation probability is 0.1, the maximum iteration number is 200, and the population size is 100, so that the optimization result is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544120A (en) * | 2022-03-04 | 2022-05-27 | 北京玻钢院复合材料有限公司 | Estimation method for steel structure deflection of blade mould |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544120A (en) * | 2022-03-04 | 2022-05-27 | 北京玻钢院复合材料有限公司 | Estimation method for steel structure deflection of blade mould |
| CN114544120B (en) * | 2022-03-04 | 2023-07-04 | 北京玻钢院复合材料有限公司 | Estimation method for deflection of steel structure of blade die |
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