CN118124144A - CFRTP (computational fluid dynamics) connection process of embedded structure - Google Patents
CFRTP (computational fluid dynamics) connection process of embedded structure Download PDFInfo
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- CN118124144A CN118124144A CN202410286764.5A CN202410286764A CN118124144A CN 118124144 A CN118124144 A CN 118124144A CN 202410286764 A CN202410286764 A CN 202410286764A CN 118124144 A CN118124144 A CN 118124144A
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- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 title description 3
- 239000002184 metal Substances 0.000 claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000010146 3D printing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000007639 printing Methods 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229920002292 Nylon 6 Polymers 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910003407 AlSi10Mg Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides a CFRTP connection process of a mosaic structure, which comprises the following steps: s1, printing a three-dimensional embedded structure in a connection area of CFRTP through a continuous fiber 3D printer; the three-dimensional jogged structure comprises a plurality of circular rings II which are concentrically arranged from the center to the outside, and jogged gaps II are formed between two adjacent circular rings II; s2, performing heat treatment on the CFRTP; performing heat treatment on the CFRTP with the three-dimensional embedded structure; s3, manufacturing a metal embedded component through metal 3D printing, wherein the metal embedded component comprises a plurality of circular rings I concentrically arranged from the center to the outside, and an embedded gap I is formed between two adjacent circular rings I; s4, connection; and connecting the two CFRTP with the metal embedded components through mounting bolts and nuts, wherein the three-dimensional embedded structure and the metal embedded components are mutually embedded. The technical scheme of the invention solves the problems of serious local failure and poor connection quality at the joint open hole caused by insufficient friction force in CFRTP bolt connection in the prior art.
Description
Technical Field
The invention relates to the technical field of lightweight composite material connection, in particular to a CFRTP (computational fluid dynamics) connection process of a chimeric structure.
Background
CFRTP refers to continuous fiber reinforced thermoplastic. Thermoplastic fiber reinforced materials have been widely used in the fields of aerospace, automobile industry, wind power generation, sports and leisure equipment and the like because of their excellent properties of light weight, high specific modulus, high specific strength, corrosion resistance and the like.
The traditional composite material is connected with two types of cementing and mechanical connection. The bonding is realized by adding the bonding agent between the base materials and depending on the adsorption force between the bonding agent and the base materials, but the bonding is greatly influenced by the environment, and particularly, the temperature, the illumination and the humidity have direct relation to the ageing degree of the joint. Mechanical fastening is a method of joining effective joints using additional clamping members, mechanical fasteners joining processes where mechanical fasteners exert pressure on the composite material, which first transfers load by friction between the plies. When the tensile load is sufficiently high, the composite panel transfers the load through the shear of the mechanical fastener. The damage of the perforated part of the composite board can be effectively reduced by transmitting the load through friction force, the connection quality of the joint is improved, but the friction coefficient of the composite board is low, and the excessive applied pressure can cause the crushing failure of the surface of the composite board.
Disclosure of Invention
In order to solve the technical problems that in the prior art, the friction coefficient is small in the CFRTP bolt connection process, and enough friction force cannot be provided to cause poor connection quality, the CFRTP connection process with the embedded structure is provided.
The invention adopts the following technical means:
The CFRTP connection process of the embedded structure specifically comprises the following steps:
s1, printing a three-dimensional embedded structure in a connection area of CFRTP through a continuous fiber 3D printer
The three-dimensional jogged structure comprises a plurality of circular rings II which are concentrically arranged from the center to the outside, and jogged gaps II are formed between two adjacent circular rings II; the center of the three-dimensional embedded structure is provided with a bolt hole II, and the bolt hole II penetrates through the CFRTP; the three-dimensional jogged structure is also provided with a reinforcing part II used for connecting the circular rings II, and the reinforcing part II is a structure which is sunken relative to the upper surface of the circular rings II;
S2, performing heat treatment on CFRTP
Carrying out heat treatment on the CFRTP with the three-dimensional embedded structure, wherein the heating temperature is 10-20 ℃ lower than the melting temperature of a CFRTP matrix;
S3, manufacturing metal embedded component through metal 3D printing
The metal embedded component is of a circular hollowed-out structure capable of being embedded with the three-dimensional embedded structure, and comprises a plurality of circular rings I which are concentrically arranged from the center to the outside, hollowed-out embedded gaps I are formed between two adjacent circular rings I, and a bolt hole I is formed in the center of the metal embedded component; the metal embedded component is further provided with a reinforcing part I for connecting the circular rings I, and the reinforcing part I is of a structure recessed relative to the upper surface of the circular rings I;
S4, connection
And (3) placing the metal embedded component manufactured in the step (S3) between the connecting areas of the two CFRTP processed in the step (S1) and the step (S2), aligning the bolt hole (II) with the bolt hole (I), connecting the two CFRTP and the metal embedded component by installing bolts and nuts in the bolt hole (II) and the bolt hole (I), and enabling the three-dimensional embedded structures of the two CFRTP to be embedded with the metal embedded component respectively.
Further, the three-dimensional jogged structure is provided with two reinforcing parts II which are symmetrical relative to the bolt hole II along the radial direction; the metal fitting member is provided with two reinforcing portions i symmetrical about the bolt hole i in a radial direction.
Further, when the three-dimensional fitting structure is fitted to the metal fitting member, the circular ring I is fitted to the fitting gap II, and the circular ring II is fitted to the fitting gap I.
Further, when the three-dimensional embedded structure is embedded with the metal embedded component, the annular ring I is in interference fit with the embedded gap II, and the annular ring II is in interference fit with the embedded gap I.
Further, the kind of the resin matrix of the three-dimensional embedded structure is consistent with that of the CFRTP matrix, and the three-dimensional embedded structure and the CFRTP matrix can be melted and solidified into a whole after the heat treatment in the step S2.
Further, the metal fitting structural member is subjected to a high-temperature annealing treatment.
Further, the thickness of the metal fitting member is twice the thickness of the three-dimensional fitting structure.
Further, the three-dimensional jogged structures of the two CFRTP are connected by a mechanical fastener, or are connected by cementing, or are connected by a mixture of mechanical fasteners and cementing.
Further, the width of the ring II is not smaller than that of the ring I.
Further, the CFRTP is a continuous carbon fiber reinforced resin laminate of a nylon 6 matrix.
Compared with the prior art, the invention has the following advantages:
According to the CFRTP connecting process, the purpose of mutual embedding is achieved by additionally arranging the specific embedding structure at the contact part of the connected composite material laminates, so that the problem that the surface friction coefficient of the composite laminate is small and enough friction force cannot be improved in the connecting process is effectively solved; according to the invention, the composite laminates are mutually embedded through the surface embedded structure, and the load is transmitted through the embedded structure, so that the damage of the mechanical fastener to the composite laminates in the bearing process can be reduced, and the quality and stability of the joint can be improved.
For the reasons, the invention can be widely popularized in the field of lightweight composite material connection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic view of the metal fitting structure.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a sectional view taken along the direction A-A in fig. 2.
Fig. 4 is a schematic view of the structure of CFRTP having the three-dimensional chimeric structure.
Fig. 5 is a schematic view of the three-dimensional chimeric structure.
Fig. 6 is a schematic side view of the three-dimensional jogged structure.
Fig. 7 is a schematic diagram of a CFRTP connection process.
Fig. 8 is a schematic top view of a CFRTP connection process.
Fig. 9 is a schematic side view of a CFRTP connection process.
In the figure: 1. a metal fitting structure; 11. a circular ring I; 12. a jogged gap I; 13. a reinforcing part I; 14. bolt holes I; 2. CFRTP; 21. a three-dimensional chimeric structure; 22. a CFRTP matrix; 211. a jogged gap II; 212. a circular ring II; 213. a reinforcing part II; 214. bolt holes II; 3. bolts and nuts.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
Example 1
As shown in fig. 1-9, the invention provides a CFRTP connection process with a chimeric structure, which specifically comprises the following steps:
S1, printing a three-dimensional embedded structure 21 on a connection area of CFRTP2 through a continuous fiber 3D printer
The three-dimensional jogged structure 21 comprises a plurality of circular rings II 212 concentrically arranged from the center to the outside, and jogged gaps II 211 are formed between two adjacent circular rings II 212; a bolt hole II 214 is formed in the center of the three-dimensional embedded structure 21, and the bolt hole II 214 penetrates through the CFRTP2; the three-dimensional jogged structure 21 is further provided with a reinforcing part II 213 for connecting the circular rings II 212, and the reinforcing part II 213 is a structure recessed relative to the upper surface of the circular rings II 212;
S2, heat treatment of CFRTP2
Carrying out heat treatment on the CFRTP2 with the three-dimensional embedded structure 21, wherein the heating temperature is 10-20 ℃ lower than the melting temperature of the CFRTP matrix 22, and the molecular chains of the CFRTP matrix 22 can be in an active state at the heating temperature;
Effect of heat treatment: (1) Improving the interface between the three-dimensional embedded structure 21 and the CFRTP matrix 22, and performing heat treatment to enable a certain disentanglement motion of a high polymer chain in the resin matrix of the three-dimensional embedded structure and the CFRTP matrix to be generated, so that interface molecules between the two can be mutually penetrated and fused into a whole; (2) The performance of the three-dimensional embedded structure 21 is improved, the printed product is generally subjected to rapid temperature rise and rapid temperature reduction, wherein the process is accompanied by insufficient crystallinity of the resin, so that the mechanical property is reduced;
s3, manufacturing the metal embedded component 1 through metal 3D printing
The metal embedded component 1 is a circular hollowed-out structure capable of being embedded with the three-dimensional embedded structure 21, and comprises a plurality of circular rings I11 concentrically arranged from the center to the outside, hollowed-out embedded gaps I12 are formed between two adjacent circular rings I11, and a bolt hole I14 is formed in the center of the metal embedded component 1; the metal fitting member 1 is further provided with a reinforcing portion i13 for connecting the circular rings i 11, and the reinforcing portion i13 is recessed with respect to the upper surface of the circular ring i 11;
S4, connection
The metal fitting member 1 manufactured in step S3 is placed between the connecting areas of the two CFRTP2 processed in step S1 and step S2, the bolt hole ii 214 and the bolt hole i 14 are aligned with each other, the two CFRTP2 and the metal fitting member 1 are connected by installing bolts and nuts 3 in the bolt hole ii 214 and the bolt hole i 14, and the three-dimensional fitting structures 21 of the two CFRTP2 are respectively fitted to each other with the metal fitting member 1.
The embedded structure formed by the mutual matching of the three-dimensional embedded structure 21 and the metal embedded component 1 can limit the mutual displacement of two connected pieces, and the circular embedded structure has better positioning characteristic and has the advantage of uniform stress.
Further, the three-dimensional fitting structure 21 is provided with two elongated reinforcing portions ii 213 symmetrical with respect to the bolt hole ii 214 in the radial direction; the metal fitting member 1 is provided with two elongated reinforcing portions i 13 symmetrical about the bolt hole i 14 in the radial direction.
Further, when the three-dimensional fitting structure 21 and the metal fitting member 1 are fitted to each other, the circular ring i 11 and the fitting gap ii 211 are fitted to each other, and the circular ring ii 212 and the fitting gap i 11 are fitted to each other.
Further, when the three-dimensional fitting structure 21 and the metal fitting member 1 are fitted to each other, the annular ring i 11 is in interference fit with the fitting gap ii 211, and the annular ring ii 212 is in interference fit with the fitting gap i 11.
Further, the width of the fitting gap ii 211 is 1.2mm, and the thickness of the three-dimensional fitting structure 21 is 0.2mm; the diameter of the carbon wire used by the continuous fiber 3D printer is 0.1mm.
Further, when the continuous fiber 3D printer prints the three-dimensional embedded structure 21, the laying direction of the continuous fiber is performed according to the shape of the circular ring ii 212; the thickness of the ring II 212 is no greater than five times the diameter of the continuous fiber tow.
Further, the resin matrix of the three-dimensional embedded structure 21 is identical to the CFRTP matrix 22, and the three-dimensional embedded structure 21 and the CFRTP matrix 22 can be melted and solidified into a whole after the heat treatment in the step S2, without obvious dividing lines.
Further, the metal fitting member 1 is made of metal such as AlSi10Mg aluminum alloy, 316L stainless steel or titanium alloy, because metal plasticity is relatively good.
Further, the metal fitting structural member 1 is subjected to a high-temperature annealing treatment to improve its toughness.
Further, the thickness of the metal fitting member 1 is twice the thickness of the three-dimensional fitting structure 21.
Further, the three-dimensional chimeric structures 21 of the two CFRTP2 are connected by mechanical fasteners, or by cementing, or by a hybrid combination of mechanical fasteners and cementing.
Further, the width of the ring ii 212 is not smaller than the width of the ring i 11.
Further, the CFRTP2 is a continuous carbon fiber reinforced resin laminate with a nylon 6 matrix, and has a thickness of 2mm, a length of 175mm and a width of 65mm.
The connection mode provided by the invention is suitable for connection of continuous fiber reinforced plastics and connection between continuous fiber reinforced plastics and metal plates.
According to the CFRTP connecting process, the aim of mutual embedding is achieved by additionally arranging the specific embedding structure at the contact part of the connected composite material laminates, so that the problem that the surface friction coefficient of the composite laminate is small and enough friction force cannot be improved in the connecting process is effectively solved; the composite laminate plates are mutually embedded through the surface embedded structure, so that damage of mechanical fasteners to the composite laminate plates in the bearing process can be reduced, and the quality and stability of the joint can be improved.
The invention can reduce the damage of concentrated stress at the joint to CFRTP, combines the composite material connecting mode with the traditional mechanical connecting mode, has the characteristics of simple procedure, lower cost, wide application range, simple operation and the like, and can adapt to the automatic development trend.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (10)
1. The CFRTP connection process of the embedded structure is characterized by comprising the following steps of:
s1, printing a three-dimensional embedded structure in a connection area of CFRTP through a continuous fiber 3D printer
The three-dimensional jogged structure comprises a plurality of circular rings II which are concentrically arranged from the center to the outside, and jogged gaps II are formed between two adjacent circular rings II; the center of the three-dimensional embedded structure is provided with a bolt hole II, and the bolt hole II penetrates through the CFRTP; the three-dimensional jogged structure is also provided with a reinforcing part II used for connecting the circular rings II, and the reinforcing part II is a structure which is sunken relative to the upper surface of the circular rings II;
S2, performing heat treatment on CFRTP
Carrying out heat treatment on the CFRTP with the three-dimensional embedded structure, wherein the heating temperature is 10-20 ℃ lower than the melting temperature of a CFRTP matrix;
S3, manufacturing metal embedded component through metal 3D printing
The metal embedded component is of a circular hollowed-out structure capable of being embedded with the three-dimensional embedded structure, and comprises a plurality of circular rings I which are concentrically arranged from the center to the outside, hollowed-out embedded gaps I are formed between two adjacent circular rings I, and a bolt hole I is formed in the center of the metal embedded component; the metal embedded component is further provided with a reinforcing part I for connecting the circular rings I, and the reinforcing part I is of a structure recessed relative to the upper surface of the circular rings I;
S4, connection
And (3) placing the metal embedded component manufactured in the step (S3) between the connecting areas of the two CFRTP processed in the step (S1) and the step (S2), aligning the bolt hole (II) with the bolt hole (I), connecting the two CFRTP and the metal embedded component by installing bolts and nuts in the bolt hole (II) and the bolt hole (I), and enabling the three-dimensional embedded structures of the two CFRTP to be embedded with the metal embedded component respectively.
2. The CFRTP connection process for a mosaic structure according to claim 1, wherein the three-dimensional mosaic structure is radially provided with two reinforcing parts ii symmetrical with respect to the bolt hole ii; the metal fitting member is provided with two reinforcing portions i symmetrical about the bolt hole i in a radial direction.
3. The CFRTP connection process for a fitting structure according to claim 1, wherein when the three-dimensional fitting structure and the metal fitting member are fitted to each other, the ring i and the fitting gap ii are fitted to each other, and the ring ii and the fitting gap i are fitted to each other.
4. A CFRTP connection process according to claim 3 wherein when the three-dimensional fitting structure and the metal fitting member are fitted to each other, the ring i is in interference fit with the fitting gap ii, and the ring ii is in interference fit with the fitting gap i.
5. The CFRTP connection process for a chimeric structure according to claim 1, wherein the resin matrix of the three-dimensional chimeric structure is identical in kind to the CFRTP matrix, and the three-dimensional chimeric structure and the CFRTP matrix can be melted and solidified into a whole after the heat treatment in step S2.
6. The CFRTP connection process for a mosaic structure according to claim 1, wherein the metal mosaic structure is subjected to a high-temperature annealing treatment.
7. The CFRTP connection process for a chimeric structure according to claim 1, wherein the thickness of the metal chimeric member is twice the thickness of the three-dimensional chimeric structure.
8. The CFRTP connection process for a chimeric structure according to claim 1, wherein the three-dimensional chimeric structures of two CFRTP are connected by a mechanical fastener, or by cementing, or by a hybrid connection of a mechanical fastener and a cementing combination.
9. The CFRTP connection process for a mosaic structure according to claim 1, wherein the width of the circular ring ii is not smaller than the width of the circular ring i.
10. The CFRTP connection process for a chimeric structure according to claim 1, wherein the CFRTP is a continuous carbon fiber reinforced resin laminate of a nylon 6 matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410286764.5A CN118124144A (en) | 2024-03-13 | 2024-03-13 | CFRTP (computational fluid dynamics) connection process of embedded structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410286764.5A CN118124144A (en) | 2024-03-13 | 2024-03-13 | CFRTP (computational fluid dynamics) connection process of embedded structure |
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| CN118124144A true CN118124144A (en) | 2024-06-04 |
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| CN202410286764.5A Pending CN118124144A (en) | 2024-03-13 | 2024-03-13 | CFRTP (computational fluid dynamics) connection process of embedded structure |
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| Country | Link |
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| CN (1) | CN118124144A (en) |
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