CN113442485A - High-performance beam column structure and manufacturing method thereof - Google Patents
High-performance beam column structure and manufacturing method thereof Download PDFInfo
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- CN113442485A CN113442485A CN202110591172.0A CN202110591172A CN113442485A CN 113442485 A CN113442485 A CN 113442485A CN 202110591172 A CN202110591172 A CN 202110591172A CN 113442485 A CN113442485 A CN 113442485A
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- column structure
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- composite material
- reinforced composite
- prepreg
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0003—Producing profiled members, e.g. beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/0009—Constructional details, e.g. manipulator supports, bases
- B25J9/0012—Constructional details, e.g. manipulator supports, bases making use of synthetic construction materials, e.g. plastics, composites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
- B64C1/064—Stringers; Longerons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0872—Prepregs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0872—Prepregs
- B29K2105/0881—Prepregs unidirectional
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/251—Particles, powder or granules
Abstract
The invention discloses a manufacturing method of a beam-column structure, which comprises the following steps: s1: the internal structure is manufactured by adopting a solid buoyancy material, and the solid buoyancy material consists of hollow microspheres and epoxy resin; s2: manufacturing a fiber reinforced composite material to obtain an external structure; s3: and bonding the outer structure and the inner structure to obtain the beam-column structure. According to the invention, the solid buoyancy material and the fiber reinforced composite material are combined to form the beam-column structure, so that the advantages of the two materials are complemented while the structure density is ensured to be less than that of water, good compression resistance and bending resistance are obtained, and the safety and the practicability of the structure are improved.
Description
Technical Field
The invention belongs to the technical field of beam-column structure design, and particularly relates to a high-performance beam-column structure and a manufacturing method thereof.
Background
The design and preparation processes of unmanned aerial vehicles, robots, exoskeletons and other machine devices present multi-target characteristics, and contradictions often exist among targets: for example, in order to improve the bending resistance and the compression resistance of the unmanned aerial vehicle and underwater robot/exoskeleton structure, the amount of metal materials with higher density is generally increased, but the increase of the density reduces the maneuverability of the structure, and even the structure cannot be normally used due to the fact that the structure cannot be suspended in air/water; conversely, in order to improve the flexibility of the structure and reduce the use of metal materials, the compression resistance and the bending resistance of the structure cannot be ensured, and the safety and the usability of the structure have hidden troubles.
Disclosure of Invention
The invention provides a manufacturing method of a beam-column structure and a high-performance beam-column structure processed by the manufacturing method, aiming at overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a method of manufacturing a beam column structure, comprising the steps of:
s1: the internal structure is manufactured by adopting a solid buoyancy material, and the solid buoyancy material consists of hollow microspheres and epoxy resin;
s2: manufacturing a fiber reinforced composite material to obtain an external structure;
s3: and bonding the outer structure and the inner structure to obtain the beam-column structure.
Optionally, the beam-column structure is manufactured by a prefabrication method or a cast-in-place method.
Optionally, the prefabrication method comprises the following steps:
s1a, manufacturing an internal structure by adopting a solid buoyancy material;
s2a, brushing adhesive or pasting an adhesive film on the surface of the internal structure, and paving a fiber reinforced composite material to cover the internal structure to form an external structure;
and S3a, solidifying by adopting a molding process to form the beam-column structure.
Optionally, the cast-in-place method includes the following steps:
s1b, manufacturing a cylindrical external structure by adopting a fiber reinforced composite material, and curing by using a molding process;
s2b, brushing an adhesive or sticking an adhesive film on the inner surface of the outer structure;
and S3b, pouring the mixture of the hollow microspheres and the epoxy resin into an external structure to form an internal structure, and cooling to form a beam-column structure.
The invention also discloses a high-performance beam-column structure which is processed by any one of the beam-column structure manufacturing methods, wherein the beam-column structure comprises an inner structure made of a solid buoyancy material and an outer structure made of a fiber reinforced composite material, and the outer structures are sleeved on the inner structure and are mutually bonded.
Optionally, the external structure is formed by one or more layers of prepreg.
Optionally, the outer structure is formed from multiple layers of prepreg cured in a lay-up sequence of [0/90 ].
Optionally, the prepreg is one of a unidirectional prepreg, a two-dimensional woven prepreg, and a three-dimensional woven prepreg.
Optionally, the surface of the hollow microsphere is provided with one or more of a stealth layer, a mute layer and an insulating layer.
Optionally, a reinforcing layer is arranged on the surface of the internal structure, and the reinforcing layer is made of one of metal, ceramic and composite material.
In conclusion, the solid buoyancy material and the fiber reinforced composite material are combined to form the beam-column structure, so that the density of the beam-column structure is lower than that of water, the advantages of the two materials are complementary, good compression resistance and bending resistance are obtained, and the safety and the practicability of the structure are improved.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below.
A high-performance beam column structure comprises an internal structure made of a solid buoyancy material and an external structure made of a fiber reinforced composite material, wherein the external structure is sleeved on the internal structure and is connected with the internal structure in an adhesion manner; the solid buoyancy material consists of hollow microspheres and epoxy resin.
By reasonably designing the combined structure of the solid buoyancy material and the fiber reinforced composite material, the advantages of the two materials are complemented while the density of the beam-column structure is ensured to be less than that of water, and good compression resistance and bending resistance are obtained.
The performance enhancement principle is that the density of the solid buoyancy material and the fiber reinforced composite material have the excellent characteristics of light weight and high strength. However, the solid buoyancy material has poor bending resistance, and the fiber reinforced composite material is generally of a thin shell structure and is easy to destabilize under the action of external load. Under the action of uniaxial pressure, the solid buoyancy material which is not wrapped by the fiber reinforced composite material generates stress only in the axial direction. The radial and circumferential deformation of the solid buoyancy material wrapped by the fiber reinforced composite material is restrained by the fiber reinforced composite material, stress is simultaneously generated in the axial direction, the radial direction and the circumferential direction, and the strength of the material in a three-direction compression state is higher than that in a one-way compression state. Taking GFC-068 solid buoyancy material as an example, the compressive strength under unidirectional compression is about 150 MPa; and under the action of three-direction compression, the compressive strength can exceed 200 MPa. The two sides of the bending member bear tensile and compression forces respectively, and the solid buoyancy material has poorer pressure resistance because the bending resistance depends on the tensile resistance. After the fiber reinforced composite material is adopted to wrap the buoyancy material, most of tensile stress is borne by the fiber reinforced composite material with stronger tensile strength, and the bending resistance of the combined structure is greatly improved.
In some embodiments, the inner structure and the outer structure are bonded by any type or manufacturer of adhesive film or any adhesive capable of bonding.
In some embodiments, the fiber-reinforced composite is formed from one or more plies of prepreg layup.
In some embodiments, the fiber reinforced composite is made from prepregs of any type, shape, layup, and size.
In some embodiments, the reinforcement material of the prepreg is one of any type of fiber-reinforced composite material such as carbon fiber, glass fiber, aramid fiber, ceramic fiber, and the like.
In some embodiments, the prepreg is provided as one of a unidirectional prepreg, a two-dimensional woven prepreg, and a three-dimensional woven prepreg.
In some embodiments, the shape of the inner structure is one of circular, polygonal, elliptical, drop-shaped, and other structures with any shape and size.
In some embodiments, the outer surface of the inner structure is provided with a reinforcing layer, and the material of the reinforcing layer is one of metal, ceramic, composite material, and the like.
In some embodiments, the internal structure is made of any one of the types GFC-068, HZ-42, and the hollow microspheres are sized according to design requirements.
In some embodiments, the cenospheres are provided as cenospheres materials such as hollow glass beads, hollow ceramic beads, and the like.
In some embodiments, a plurality of beam-column structures satisfying a geometric compatibility relationship may be wrapped together with a fiber-reinforced composite material to increase the strength of the beam-column structure in use.
In some embodiments, the surface of the hollow microsphere can be functionalized by adopting any method such as chemical plating and the like to realize stealth, silence, heat preservation and the like of the solid buoyancy material.
In some embodiments, the solid buoyancy material has embedded therein sensors, antennas, electrical wires, and the like.
In some embodiments, the molding process employs any type of composite molding process, such as autoclave molding, RTM, spray, hand lay-up, and the like.
In some embodiments, the beam-column structure can be realized by a prefabricated method and a cast-in-place method; specifically, the prefabrication method comprises the following steps: firstly, preparing a solid buoyancy material with a certain shape, then adopting an adhesive to stick a fiber reinforced composite material with a certain thickness and a certain layer on the surface of the buoyancy material, and finally adopting a corresponding composite material process to manufacture a beam/column structure.
The following shows a specific implementation of the prefabrication method in combination with practical situations:
the solid buoyancy material is prepared into a cylindrical structure with the radius of 25mm and the length of 500mm by using HZ-42 type solid buoyancy material provided by American 'ESS' company with any thickness and adopting a corresponding preparation process; and then adhering an adhesive film produced by Weihaiguanwei to the surface of the solid buoyancy material, paving a single-layer T300/AG80 prepreg with the thickness of 0.125mm on the surface of the solid buoyancy material in a layer sequence of [0/90] to the thickness of 2mm, and curing by adopting an autoclave molding process to finish the beam/column structure.
Specifically, the cast-in-place method comprises the following steps: the method comprises the steps of firstly preparing a fiber reinforced composite material cylinder with a certain shape by adopting a corresponding composite material process, then brushing an adhesive or sticking an adhesive film on the inner surface of the composite material, finally pouring a mixture of hollow glass beads and resin into the fiber reinforced composite material cylinder, and preparing a beam/column structure by adopting a corresponding process.
The concrete implementation mode of the cast-in-place method is shown in the following by combining the practical situation:
firstly, adopting fiber tube rolling equipment to cure T300/AG80 prepreg with the thickness of a single layer of 0.125mm into a composite material cylinder with the thickness of 2mm and the inner diameter of 25mm in the layering sequence of [0/90], and curing by using an autoclave molding process; then sticking a glue film produced by Weihaiguanwei on the inner surface of the composite material; and pouring the mixture of the hollow glass beads of GFC-068 and the epoxy resin into the fiber reinforced composite material cylinder, and cooling to prepare the beam/column structure.
The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.
Claims (10)
1. A method for manufacturing a beam-column structure is characterized by comprising the following steps:
s1: the internal structure is manufactured by adopting a solid buoyancy material, and the solid buoyancy material consists of hollow microspheres and epoxy resin;
s2: manufacturing a fiber reinforced composite material to obtain an external structure;
s3: and bonding the outer structure and the inner structure to obtain the beam-column structure.
2. The method for manufacturing a beam-column structure according to claim 1, wherein the beam-column structure is manufactured by a prefabrication method or a cast-in-place method.
3. A method of manufacturing a beam and column structure according to claim 2, wherein the prefabrication method includes the steps of:
s1a, manufacturing an internal structure by adopting a solid buoyancy material;
s2a, brushing adhesive or pasting an adhesive film on the surface of the internal structure, and paving a fiber reinforced composite material to cover the internal structure to form an external structure;
and S3a, solidifying by adopting a molding process to form the beam-column structure.
4. A method of manufacturing a beam and column structure according to claim 2, wherein the cast-in-place method comprises the steps of:
s1b, manufacturing a cylindrical external structure by adopting a fiber reinforced composite material, and curing by using a molding process;
s2b, brushing an adhesive or sticking an adhesive film on the inner surface of the outer structure;
and S3b, pouring the mixture of the hollow microspheres and the epoxy resin into an external structure to form an internal structure, and cooling to form a beam-column structure.
5. A high performance beam column structure manufactured by the method for manufacturing a beam column structure according to any one of claims 1 to 4, wherein the beam column structure comprises an inner structure made of a solid buoyant material, and an outer structure made of a fiber reinforced composite material, and the outer structures are sleeved on the inner structure and bonded with each other.
6. A high performance beam column structure according to claim 5 wherein the external structure is formed from one or more layers of prepreg.
7. A high performance beam column structure as claimed in claim 6 wherein the external structure is formed from multiple layers of prepreg cured in a layup sequence of [0/90 ].
8. The high-performance beam column structure according to claim 6, wherein the prepreg is one of a unidirectional prepreg, a two-dimensional woven prepreg and a three-dimensional woven prepreg.
9. A high performance beam column structure according to claim 5, wherein the surface of the hollow micro beads is provided with one or more of a stealth layer, a mute layer and an insulating layer.
10. The beam-column structure of claim 5, wherein the surface of the internal structure is provided with a reinforcing layer, and the reinforcing layer is made of one of metal, ceramic and composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110591172.0A CN113442485A (en) | 2021-05-28 | 2021-05-28 | High-performance beam column structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110591172.0A CN113442485A (en) | 2021-05-28 | 2021-05-28 | High-performance beam column structure and manufacturing method thereof |
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| CN113442485A true CN113442485A (en) | 2021-09-28 |
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| CN202110591172.0A Pending CN113442485A (en) | 2021-05-28 | 2021-05-28 | High-performance beam column structure and manufacturing method thereof |
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Citations (6)
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| CN104130549A (en) * | 2014-08-01 | 2014-11-05 | 上海海事大学 | Fiber reinforced resin composite hollow ball and preparation method thereof |
| CN106584883A (en) * | 2016-12-07 | 2017-04-26 | 中国人民解放军海军工程大学 | Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit |
| CN109627690A (en) * | 2018-11-27 | 2019-04-16 | 中国船舶重工集团公司第七二五研究所 | A kind of solid buoyancy material and preparation method thereof containing three-dimensional fiber reinforcement |
| CN111098523A (en) * | 2019-11-13 | 2020-05-05 | 北京玻钢院复合材料有限公司 | Composite material light cabin and preparation method thereof |
| CN111497351A (en) * | 2020-05-19 | 2020-08-07 | 西湖大学 | Sandwich composite pressure-resistant shell and application thereof |
| CN111534072A (en) * | 2020-05-19 | 2020-08-14 | 西湖大学 | Invisible hollow microsphere composite material |
-
2021
- 2021-05-28 CN CN202110591172.0A patent/CN113442485A/en active Pending
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| CN104130549A (en) * | 2014-08-01 | 2014-11-05 | 上海海事大学 | Fiber reinforced resin composite hollow ball and preparation method thereof |
| CN106584883A (en) * | 2016-12-07 | 2017-04-26 | 中国人民解放军海军工程大学 | Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit |
| CN109627690A (en) * | 2018-11-27 | 2019-04-16 | 中国船舶重工集团公司第七二五研究所 | A kind of solid buoyancy material and preparation method thereof containing three-dimensional fiber reinforcement |
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| CN111497351A (en) * | 2020-05-19 | 2020-08-07 | 西湖大学 | Sandwich composite pressure-resistant shell and application thereof |
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