Self-forming process of variable-section components based on bionics

Abstract

The invention discloses a self-forming process of a variable-section component based on bionics. The variable-section component includes a plurality of rods. The self-forming process includes: establishing a simulated rod of the same length as the rod; setting simulated structural parameters of the simulated rod, and applying a load to the simulated rod to generate a simulated deformation curve; establishing a processing database according to the simulated structural parameters and the simulated deformation curve; obtaining a target deformation curve of the rod, and obtaining the target structural parameters of the rod from the processing database according to the target deformation curve; and processing the rod according to the target structural parameters. Thus, the production cost of the rod can be reduced and the production efficiency can be improved by establishing a processing database.

Description

Technical Field

[0001] The invention relates to the field of civil engineering, and in particular to a self-forming process of a variable-section component based on bionics. Background Art

[0002] In recent years, the component materials and structures in the field of civil engineering have been continuously developing, and people's aesthetic requirements for structures have become increasingly higher. For example, in a woven mesh structure with a complex spatial curve shape, taking a composite rod as an example, the shape of each rod should be precisely matched with the shape given by the architectural design to achieve a variety of different bending effects. However, the current component forming process has a small variety of component shapes, and the force bending effect is single, which cannot meet the diverse shape requirements.

[0003] Therefore, the current self-forming process of variable-section components still needs to be improved. Summary of the invention

[0004] The present invention aims to alleviate or solve at least one of the above-mentioned problems to at least some extent.

[0005] In one aspect of the present invention, the present invention proposes a self-forming process of a variable-section component based on bionics, wherein the variable-section component includes a plurality of rods, and the self-forming process includes: establishing a simulated rod of the same length as the rod; setting simulated structural parameters of the simulated rod, and applying a load to the simulated rod to generate a simulated deformation curve; establishing a processing database according to the simulated structural parameters and the simulated deformation curve; obtaining a target deformation curve of the rod, and obtaining the target structural parameters of the rod from the processing database according to the target deformation curve; and processing the rod according to the target structural parameters. Thus, the production cost of the rod can be reduced and the production efficiency can be improved by establishing a processing database.

[0006] According to an embodiment of the present invention, the setting of the simulation structural parameters of the simulation rod includes: dividing the simulation rod into a plurality of sub-rod segments along the length direction with a set length value; and setting the cross-sections of the plurality of sub-rod segments respectively. Thus, the simulation structural parameters of the simulation rod can be set more accurately and reasonably.

[0007] According to an embodiment of the present invention, the respectively setting of the cross sections of the plurality of sub-rod segments includes: constructing a plurality of cross sections; and combining the plurality of cross sections with the plurality of sub-rod segments to set a plurality of different simulated deformation curves.

[0008] According to an embodiment of the present invention, the establishment of a processing database according to the structural parameters and the simulated deformation curves includes: setting multiple sets of different simulated structural parameters respectively, and applying different loads respectively to generate multiple sets of simulated deformation curves; and establishing the processing database through multiple sets of simulated structural parameters and multiple sets of simulated deformation curves. Thus, a processing database with multiple simulated deformation curves can be obtained.

[0009] According to an embodiment of the present invention, the target structural parameters of the rod are obtained from the processing database according to the target deformation curve, including: comparing the target deformation curve with multiple groups of simulated deformation curves; and taking the simulated structural parameters corresponding to the group of simulated deformation curves with the greatest similarity after comparison as the target structural parameters. Thus, target structural parameters with a high degree of matching can be obtained through comparison.

[0010] According to an embodiment of the present invention, the comparison between the target deformation curve and the plurality of groups of simulated deformation curves includes: dividing the target deformation curve into a set number of equal distances; dividing each group of simulated deformation curves into the set number of equal distances; connecting the plurality of division points of the target deformation curve and the plurality of division points of each group of simulated deformation curves one by one to measure the distance and calculate the average distance, and the group of the plurality of groups of simulated deformation curves with the smallest average distance is the group with the greatest similarity. In this way, the matching degree of the rod can be further improved.

[0011] According to an embodiment of the present invention, when the target structural parameters of the rod cannot be obtained from the processing database according to the target deformation curve, the simulated structural parameters of the simulated rod or the load applied to the simulated rod are adjusted to obtain a new simulated deformation curve; and the processing database is updated by the adjusted simulated structural parameters and the new simulated deformation curve. In this way, the processing database can be further enriched to obtain more types of simulated deformation curves.

[0012] According to an embodiment of the present invention, the method of obtaining a new simulated deformation curve further includes: changing the deadweight of the simulated rod or applying a counterweight to a part of the simulated rod. Thus, the processing database can be further enriched.

[0013] According to an embodiment of the present invention, the method further comprises: after the plurality of rods are processed and formed respectively, the plurality of rods are connected in a manner of closed, non-closed, complete or lattice cross-section, thereby obtaining a rod with a certain length.

[0014] According to an embodiment of the present invention, the method further comprises: after the plurality of rods are processed and formed respectively, the plurality of rods are combined and connected with connecting parts so that the variable-section component is constructed into a lattice-type cross-section. Thus, the lattice-type component can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 A schematic diagram showing the structural changes of bamboo under natural loads;

[0017] Figure 2 A schematic diagram of a self-forming process flow of a variable-section member according to an embodiment of the present invention is shown;

[0018] Figure 3 It shows a schematic structural diagram of a variable cross-section member according to an embodiment of the present invention;

[0019] Figure 4 A schematic cross-sectional view of a connecting piece of a variable-section member according to an embodiment of the present invention is shown.

[0020] Description of reference numerals:

[0021] 1: Rod; 2: Connecting parts. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In one aspect of the present invention, a bionic self-forming process of a variable-section component is proposed, wherein the variable-section component includes a plurality of rods. By matching a target deformation curve with a simulated deformation curve, the target structural parameters required in the actual manufacturing process of the rods are obtained through simulated structural parameters, thereby reducing the number of tests in the manufacturing process, reducing the manufacturing cost of the rods, and improving the manufacturing efficiency.

[0024] For ease of understanding, the reasons why the component self-forming process of the present application has the above beneficial effects are explained below:

[0025] Taking the field of civil engineering as an example, in a mesh structure with a curved shape, the shape of each rod should be accurately matched with the shape given by the architectural design to achieve a variety of different bending effects, so as to better meet the curved shape of the mesh structure. The inventor found that for components used in complex spatial structures, if each rod is customized for specific needs, a large number of process tests and structural tests are required in the prior art to obtain rods that meet the needs, and the production cycle is long. For rods of different shapes, the above-mentioned cumbersome production process is required, and the process flexibility is poor. In addition, since mold opening is usually required in the process of rod production, and multiple rods are connected to form components, under the premise of the aforementioned large number of process tests, the mold opening and connection costs will also increase accordingly, which ultimately makes the entire production process time-consuming and costly. In addition, since the rod itself will also deform under a given load, if the rod is produced only according to the target shape, the actual assembled rod will be deformed by force, which will cause a certain difference between the actual shape of the rod and the target shape.

[0026] In this application, the inventor creatively proposes a bionic self-forming process for variable-section components, referring to Figure 1 , the inventors found that, taking bamboo as an example, the closer the bamboo is to the ground, the larger the diameter of the bamboo joint is, and the closer the bamboo joint is to the top, the thinner the diameter is, that is, the diameter of the bamboo changes from the bottom to the top, that is, the cross-sectional area changes from large to small. Due to the different cross-sectional distributions at different positions of bamboo, when it encounters external forces and deforms, the deformation modes of the bamboo joints corresponding to different cross-sections are not exactly the same. Similarly, for a rod, in order to make it meet a variety of deformation requirements, it can be divided into a plurality of sub-rod segments with the same or different cross-sections for separate deformation studies, and then a plurality of sub-rod segments that meet the deformation requirements are connected to form a rod that meets the target deformation curve. In addition, the inventors also found that the external forces such as gravity that bamboo is subjected to during its natural growth process have an impact on its final shape. Similarly, when setting the parameters of the sub-rod segment, the load factor should be taken into account to make it meet the deformation under a specific load, so that the final rod can be positioned to the corresponding position during construction, and the target shape can be achieved without or with only a small amount of external interference.

[0027] In summary, in the present application, by dividing the simulated rod into multiple sections, each section is provided with a different cross-sectional shape, and a different bending stiffness is given to the simulated rod, so that the simulated rod can have different curvatures at different cross sections when subjected to a bending load or a combination of bending and other loads. By respectively providing different cross sections to different sections of the rod, the deformation results of all simulated rods under the existing cross-sectional types, i.e., the simulated deformation curves, can be obtained. All simulated deformation curves are compared with the shape of the target deformation curve, and the cross-sectional distribution corresponding to the existing simulated deformation curve with the smallest difference is the cross-sectional distribution that the target deformation curve should have.

[0028] Specifically, refer to Figure 2 , the self-forming process of variable-section components includes the following steps:

[0029] S100: Create a simulated rod with the same length as the rod

[0030] According to some embodiments of the present invention, in order to facilitate simulation calculation, a simulation rod of the same length as the rod is first established in this step, so that the subsequent simulation calculation results match the rod actually required. It can be understood by those skilled in the art that the simulation rod of the same length as the rod includes the case where the length of the simulation rod is the same as the length of the rod, and the case where there is a small error between the length of the simulation rod and the length of the rod, as long as the rod is finally obtained through the target structural parameters to meet the use requirements.

[0031] S210: Setting the simulation structure parameters of the simulation rod

[0032] According to some embodiments of the present invention, in this step, the simulation structural parameters of the simulation rod are set. Specifically, the simulation structural parameters of the simulation rod are set including: dividing the simulation rod into a plurality of sub-rod segments along the length direction with a set length value; and setting the cross-sections of the plurality of sub-rod segments separately. Specifically, setting the cross-sections of the plurality of sub-rod segments separately includes: constructing a plurality of cross-sections; and combining and setting the plurality of cross-sections with the plurality of sub-rod segments.

[0033] According to some embodiments of the present invention, the number of sub-rod segments is not particularly limited, as long as it can ensure that for a certain sub-rod segment, the final deformation of the rod under its cross-sectional distribution is as consistent as possible with the target shape. For example, the rod can be divided into 10 segments, preferably, considering the structural symmetry, the rod can be divided into ten equal parts.

[0034] According to some embodiments of the present invention, the type of the cross section of the sub-rod segment is not particularly limited, as long as it can ensure that for a certain sub-rod segment, the final deformation of the rod under its cross-sectional distribution is as consistent as possible with the target shape. For example, the cross section of the sub-rod segment can be at least one of a circle, an ellipse, and a regular polygon.

[0035] According to some embodiments of the present invention, the correspondence between sub-segments and cross-sections is not particularly limited. For example, multiple sub-segments may have the same cross-section; multiple sub-segments may also have multiple cross-sections; some of the multiple sub-segments may have the same cross-section, and the remaining sub-segments may have multiple cross-sections. Those skilled in the art may make a selection based on actual conditions.

[0036] S220: Apply load to the simulation rod to generate a simulation deformation curve

[0037] According to an embodiment of the present invention, in this step, a load is applied to the simulation rod to generate a simulation deformation curve. The type of load is not particularly limited, as long as it can simulate the stress condition of the rod after actual assembly. For example, the load may include only bending load, or a combination of bending load and other loads. In this way, the simulation rod can have different curvatures at different cross sections under the combined effects of bending and other loads, thereby meeting various deformation requirements.

[0038] S300: Establish a processing database based on simulated structural parameters and simulated deformation curves

[0039] According to some embodiments of the present invention, in the step of establishing a processing database according to the structural parameters and the simulated deformation curves, specifically, it includes: setting multiple groups of different simulated structural parameters respectively, and applying different loads respectively to generate multiple groups of simulated deformation curves; establishing a processing database through multiple groups of simulated structural parameters and multiple groups of simulated deformation curves. For example, the number of sub-segments of the simulated rod, the cross-sectional shape of the sub-segments, the load of the rod and other parameters can be adjusted individually or in combination to obtain a variety of simulated deformation curves. According to the one-to-one correspondence between the number of sub-segments, the cross-sectional shape and the load of the rod and the simulated deformation curve, a processing database is recommended, so that the number of sub-segments, the cross-sectional shape of the sub-segments, the load of the rod and other parameters that should be set can be determined according to the simulated deformation curves in the processing database.

[0040] S400: Obtain target deformation curve of rod

[0041] According to some embodiments of the present invention, in the step of obtaining a target deformation curve of the rod, after obtaining the target deformation curve, the target deformation curve can be matched with the simulation deformation curve to determine the target structural parameters corresponding to the target deformation curve.

[0042] S500: Obtain the target structural parameters of the rod from the processing database according to the target deformation curve

[0043] According to some embodiments of the present invention, in this step, target structural parameters of the rod are obtained from the processing database according to the target deformation curve. Specifically, obtaining the target structural parameters of the rod from the processing database according to the target deformation curve includes: comparing the target deformation curve with multiple groups of simulated deformation curves; and taking the simulated structural parameters corresponding to the group of simulated deformation curves with the greatest similarity after comparison as the target structural parameters.

[0044] According to some embodiments of the present invention, the method for comparing the target deformation curve with multiple groups of simulated deformation curves is not particularly limited. For example, the comparison can be based on parameters such as point distance, deformation curve curvature, etc. Specifically, when the target deformation curve is compared with the simulated deformation curve by the point distance between the target deformation curve and the simulated deformation curve, the comparison of the target deformation curve with multiple groups of simulated deformation curves includes: dividing the target deformation curve into a set number of equal distances; dividing each group of simulated deformation curves into a set number of equal distances; connecting multiple division points of the target deformation curve and multiple division points of each group of simulated deformation curves one by one to measure the distance and calculate the average distance, and the group with the smallest average distance among the multiple groups of simulated deformation curves is the group with the greatest similarity. Further: the target deformation curve can be divided into 50 parts with equal distance, that is, these 50 equally divided points are used to represent the position of the target deformation curve under the deformation mode; multiple groups of simulated deformation curves are also divided into 50 parts with equal distance, that is, these 50 equally divided points are used to represent the position of the simulated deformation curve under the deformation mode; the distances between the 50 equally divided points on the simulated deformation curve and the 50 equally divided points on the target deformation curve corresponding to each other are calculated respectively, and 50 point distance values ​​are obtained, and the geometric mean of the 50 point distance values ​​is calculated. In the method of calculating the matching degree based on the point distance, the geometric mean is used as a measure of the similarity of the two curves. The smaller the geometric mean, the greater the similarity between the two curves; the larger the geometric mean, the smaller the similarity between the two curves. The simulated structural parameters corresponding to the group of simulated deformation curves with the greatest similarity after multiple comparisons are used as the target structural parameters.

[0045] S600: Machining rods according to target structural parameters

[0046] According to some embodiments of the present invention, in this step, the rod is processed according to the target structural parameters. Since the target structural parameters are obtained by comparing the deformation curves in the aforementioned processing database, the rod can be processed directly according to the target structural parameters, eliminating the tedious test steps of mold opening, rod manufacturing, and deformation testing, greatly reducing the production cost and significantly improving the production efficiency.

[0047] According to some embodiments of the present invention, when there is a low similarity between the simulated deformation curve in the existing processing database and the target deformation curve, the self-forming process of the variable-section component may also include: when the target structural parameters of the rod cannot be obtained from the processing database according to the target deformation curve, the simulated structural parameters of the simulated rod are adjusted or the load applied to the simulated rod is adjusted to obtain a new simulated deformation curve; the processing database is updated with the adjusted simulated structural parameters and the new simulated deformation curve. For example, a new simulated deformation curve can be obtained by adjusting the number of segments of the sub-rod segment, the cross section of the sub-rod segment, the load of the rod, etc., either singly or in combination, and then matched with the target deformation curve after updating the processing database to finally obtain a simulated deformation curve and target structural parameters with a greater similarity.

[0048] According to some embodiments of the present invention, the method of obtaining a new simulated deformation curve may further include: changing the weight of the simulation rod or applying a counterweight to a part of the simulation rod, so as to obtain a new simulated deformation curve.

[0049] According to some embodiments of the present invention, after a rod is obtained through target structural parameters, a plurality of rods may be connected. For example, after a plurality of rods are separately processed and formed, the plurality of rods may be connected in a manner with a closed, non-closed, complete or lattice-like cross section, thereby obtaining a variable-section component.

[0050] According to some embodiments of the present invention, after the plurality of rods are processed and formed, the plurality of rods are combined and connected with the connecting parts so that the variable-section member is constructed into a lattice-type section. Figure 3 and Figure 4 , a plurality of rods 1 are respectively passed through a plurality of position-limiting installation openings on the connecting member 2, thereby forming a component with a lattice-type cross-section.

[0051] It should be noted that the connecting parts should have a certain strength and rigidity so that when the rod is subjected to bending load or a combination of bending and other loads, the connection will not be greatly deformed and will not be damaged, so that the deformed shape of the rod remains consistent with the target shape.

[0052] In the description of the present invention, the orientation or position relationship indicated by the terms "upper" and "lower" etc. is based on the orientation or position relationship shown in the drawings and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory. In addition, it should be noted that in this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A self-forming process of a variable-section component based on bionics, wherein the variable-section component comprises a plurality of rods, characterized in that: The self-forming process comprises: Establishing a simulated rod of the same length as the rod; The simulated structural parameters of the simulated rod are set, and a load is applied to the simulated rod to generate a simulated deformation curve, wherein the setting of the simulated structural parameters of the simulated rod includes: dividing the simulated rod into a plurality of sub-rod segments along the length direction with a set length value; and respectively setting the cross sections of the plurality of sub-rod segments. Wherein, the said separately setting the cross sections of the plurality of said sub-rod segments comprises: constructing a plurality of cross sections; combining and setting the plurality of said cross sections with the plurality of said sub-rod segments; Establishing a processing database according to the simulated structural parameters and the simulated deformation curves, wherein establishing the processing database according to the structural parameters and the simulated deformation curves comprises: respectively setting multiple sets of the simulated structural parameters, and respectively applying different loads to generate multiple sets of the simulated deformation curves; establishing the processing database through multiple sets of the simulated structural parameters and multiple sets of the simulated deformation curves; Obtain a target deformation curve of the rod, and obtain target structural parameters of the rod from the processing database according to the target deformation curve, wherein obtaining the target structural parameters of the rod from the processing database according to the target deformation curve comprises: comparing the target deformation curve with multiple groups of simulated deformation curves; taking the simulated structural parameters corresponding to a group of simulated deformation curves with the greatest similarity after comparison as the target structural parameters, The comparison between the target deformation curve and the plurality of groups of simulated deformation curves includes: dividing the target deformation curve into a set number of equal distances; dividing each group of simulated deformation curves into the set number of equal distances; performing line distance measurement on a one-to-one correspondence between a plurality of division points of the target deformation curve and a plurality of division points of each group of simulated deformation curves and calculating the average distance, and the group of the plurality of groups of simulated deformation curves having the smallest average distance is the group with the greatest similarity; Processing the rod according to the target structural parameters; The self-forming process also includes: when the target structural parameters of the rod cannot be obtained from the processing database according to the target deformation curve, the simulated structural parameters of the simulated rod are adjusted or the load applied to the simulated rod is adjusted to obtain a new simulated deformation curve; and the processing database is updated by the adjusted simulated structural parameters and the new simulated deformation curve.

2. The self-forming process of the bionic variable-section component according to claim 1, characterized in that: The method of obtaining a new simulated deformation curve also includes: The weight of the analog stick is changed or a counterweight is applied locally to the analog stick.

3. The self-forming process of the bionic variable-section component according to claim 1, characterized in that: Also includes: After the plurality of rods are processed and formed respectively, the plurality of rods are combined and connected with connecting parts so that the variable-section component is constructed into a lattice-type section.

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