CN114474785A - 3D multi-component composite auxetic super-structural material based on additive manufacturing - Google Patents
3D multi-component composite auxetic super-structural material based on additive manufacturing Download PDFInfo
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- CN114474785A CN114474785A CN202210121982.4A CN202210121982A CN114474785A CN 114474785 A CN114474785 A CN 114474785A CN 202210121982 A CN202210121982 A CN 202210121982A CN 114474785 A CN114474785 A CN 114474785A
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- 239000000463 material Substances 0.000 title claims abstract description 94
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 239000000654 additive Substances 0.000 title claims abstract description 34
- 230000000996 additive effect Effects 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000011049 filling Methods 0.000 claims abstract description 51
- 239000003822 epoxy resin Substances 0.000 claims abstract description 47
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 47
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 23
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005495 investment casting Methods 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract 2
- 239000012745 toughening agent Substances 0.000 claims description 11
- 239000003085 diluting agent Substances 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004848 polyfunctional curative Substances 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000011165 3D composite Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
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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
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention discloses a 3D multi-component composite auxetic super-structural material based on additive manufacturing, which comprises three components of a 3D auxetic super-structural material, a polymer filling material and a square tube. The matrix material of the 3D auxetic metamaterial is industrial pure aluminum, the unit cell structure is an inwards concave honeycomb type, and the material is obtained by combining additive manufacturing with an investment casting method; the polymer filling material is epoxy resin and epoxy resin montmorillonite filling material, and the square tube is a stainless steel square tube. According to the invention, the 3D multicomponent composite auxetic metamaterial is obtained by filling two polymers inside and adding a stainless steel pipe outside to form internal and external restraint according to the structural characteristics and the negative Poisson ratio effect of the 3D auxetic metamaterial ingeniously, and the structural utilization rate of the auxetic metamaterial is effectively improved. The 3D multi-component composite auxetic super-structural material obtained by the method and the process has excellent mechanical property and energy absorption characteristic, effectively overcomes the performance deficiency caused by high porosity and bending deformation characteristic of the auxetic super-structural material, and provides a theoretical basis for optimizing the performance of the auxetic super-structural material.
Description
Technical Field
The invention relates to the technical field of materials, in particular to a 3D multi-component composite auxetic super-structural material based on additive manufacturing.
Background
The auxetic super-structure material is a material with a negative Poisson ratio effect, and has more excellent mechanical and physical properties compared with the traditional material due to the special negative Poisson ratio effect, including shear modulus, fracture toughness, high impact resistance, energy absorption capacity, indentation resistance, high damping and the like, and has wide application prospects in the fields of light structures, vibration reduction and impact protection devices, sensors, medicine and the like. As a new material integrating structure and function, the material is ingeniously combined with the traditional material in the nature to realize the innovative design of the material, the potential of the material is fully excavated, a brand new direction and way are provided for developing the material and the structure with special mechanical properties, and the material becomes the leading-edge field of the domestic and foreign research in recent years.
The geometrical structure of the auxetic metamaterial is basically realized by introducing a reentrant structure, a chiral structure, a rotating rigid structure or a paper folding structure. Most of the material structures have higher porosity, and the bearing capacity and the mechanical property are inevitably reduced. Compared with a block material, the tensile-expansion super-structure material has the characteristics of shear resistance, dent resistance, energy absorption and the like by sacrificing the strength and rigidity of the material, and the performance of the obtained material can not make up for the loss of mechanical properties caused by the porous microstructure of the material, so that the negative Poisson's ratio behavior advantage is obviously reduced, particularly in energy absorption equipment or protection devices. And the deformation of the material is mainly of a bending dominant type, namely the negative Poisson ratio effect is realized by mainly bending and rotating the rod, so that the rigidity and the strength of the material are further reduced, and the material is very unfavorable for the practical application of the material. In view of this, the research obtains the auxetic metamaterial with the characteristics of negative Poisson's ratio and reasonable rigidity, strength and energy absorption, and further provides theoretical guidance and experimental basis for practical application of the auxetic metamaterial.
Disclosure of Invention
The invention aims to provide a 3D multi-component composite auxetic metamaterial based on additive manufacturing, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
A3D multi-component composite auxetic metamaterial based on additive manufacturing comprises a 3D auxetic metamaterial, a polymer filling material and a square tube, wherein a base material of the 3D auxetic metamaterial is industrial pure aluminum, a single cell of the 3D auxetic metamaterial is an inwards concave honeycomb type, the polymer is an epoxy resin filling material, an epoxy resin montmorillonite filling material and a diluent, and the square tube is a stainless steel square tube.
As a further scheme of the invention: the diameter D of the 3D auxetic metamaterial unit cell rod element is 0.8-1.2 mm, the length H of the cross rod is 4.2mm, the length L of the inner concave rod is 2.5mm, the inner concave angle is 70 degrees, the number of the unit cells of the material along the X direction is 5, the number of the unit cells of the material along the Y direction is 5, and the number of the unit cells of the material along the Z direction is 3.
As a still further scheme of the invention: the epoxy resin filling material comprises 1-7 parts of epoxy resin, 2-4 parts of a toughening agent and 1-4 parts of a hardening agent.
As a still further scheme of the invention: the epoxy resin montmorillonite filling material comprises 4-7 parts of epoxy resin filling material and 3-6 parts of nano montmorillonite.
As a still further scheme of the invention: the epoxy resin is E-44 type epoxy resin, the toughening agent is DBP, and the hardener is T31 hardener.
As a still further scheme of the invention: the diluent is acetone.
A3D multi-component composite auxetic metamaterial is prepared by the following steps:
the method comprises the following steps: additive manufacturing, namely preparing a 3D auxetic metamaterial photosensitive resin model in an additive manufacturing mode;
step two: investment casting, namely obtaining a 3D aluminum-based auxetic metamaterial by adopting industrial pure aluminum through investment casting, drying, stepped heating, roasting and seepage through a 3D auxetic metamaterial model;
step three: preparing a polymer, namely mixing epoxy resin, a toughening agent and a hardening agent according to a ratio to obtain an epoxy resin filling material, taking one half of the prepared epoxy resin filling material, continuously adding nano montmorillonite according to the ratio to obtain an epoxy resin montmorillonite filling material, putting the epoxy resin filling material and the epoxy resin montmorillonite filling material into a constant-temperature container, heating to 70 ℃, simultaneously adding a diluent, and fully and uniformly stirring until the mixture has good fluidity, thereby obtaining the polymer filling material;
step four: and (3) compounding the 3D multi-component composite auxetic metamaterial, enabling a polymer to penetrate into the structural gap of the 3D aluminum-based auxetic metamaterial through a pressure filling method to obtain the composite auxetic metamaterial, and filling the composite auxetic metamaterial into a stainless steel square tube to obtain the 3D multi-component composite auxetic metamaterial.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the 3D multicomponent composite auxetic metamaterial is obtained by filling the polymer in the material and adding the stainless steel square tube outside the material to form internal and external constraints according to the structural characteristics of the 3D auxetic metamaterial and the special negative Poisson ratio effect, and the structural utilization rate of the auxetic metamaterial is effectively improved.
2. The 3D multi-component composite auxetic super-structural material obtained by the method and the process has excellent mechanical property and energy absorption characteristic, and overcomes the performance deficiency caused by high porosity and bending deformation characteristic of the auxetic super-structural material.
Drawings
Fig. 1 shows structural parameters of a 3D auxetic metamaterial in the additive manufacturing of a 3D multicomponent composite auxetic metamaterial.
Fig. 2 shows a 3D aluminum-based auxetic metamaterial in a 3D multi-component composite auxetic metamaterial based on additive manufacturing.
Fig. 3 is a 3D composite auxetic metamaterial in the 3D multicomponent composite auxetic metamaterial based on additive manufacturing.
Fig. 4 is a 3D multi-component composite auxetic metamaterial based on additive manufacturing.
Fig. 5 is a finite element model of a 3D multi-component composite auxetic metamaterial based on additive manufacturing.
Fig. 6 is a finite element model of a stainless steel square tube in a 3D multi-component composite auxetic super-structural material based on additive manufacturing.
Fig. 7 is a stainless steel square tube mieses stress distribution in a 3D multi-component composite auxetic metamaterial based on additive manufacturing.
Fig. 8 is a stainless steel square tube mieses stress distribution in a 3D multi-component composite auxetic metamaterial (the filler is epoxy) based on additive manufacturing.
Fig. 9 is a missles stress distribution diagram of a stainless steel hollow square tube in a 3D multi-component composite auxetic metamaterial based on additive manufacturing (the filling material is epoxy resin montmorillonite).
Fig. 10 is a first stress-strain curve diagram of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube manufactured based on additive manufacturing.
Fig. 11 is a stress-strain curve diagram of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube manufactured based on additive manufacturing.
Fig. 12 is a third stress-strain curve diagram of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube manufactured based on additive manufacturing.
Fig. 13 is a first energy absorption curve diagram of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube based on additive manufacturing.
Fig. 14 is a graph of energy absorption curves of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube manufactured based on additive manufacturing.
Fig. 15 is a third energy absorption curve diagram of a 3D multi-component composite auxetic metamaterial and a stainless steel square tube manufactured based on additive manufacturing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 15, in an embodiment of the present invention, a 3D multicomponent composite auxetic metamaterial based on additive manufacturing includes a 3D auxetic metamaterial, a polymer, and a square tube, where a base material of the 3D auxetic metamaterial is industrial pure aluminum, a single cell of the 3D auxetic metamaterial is a concave honeycomb type, the polymer is an epoxy resin filling material, an epoxy resin montmorillonite filling material, and a diluent, and the square tube is a stainless steel square tube.
The diameter D of the 3D auxetic metamaterial unit cell rod element is 0.8-1.2 mm, the length H of the cross rod is 4.2mm, the length L of the inner concave rod is 2.5mm, the inner concave angle is 70 degrees, the number of the unit cells of the material along the X direction is 5, the number of the unit cells of the material along the Y direction is 5, and the number of the unit cells of the material along the Z direction is 3.
The epoxy resin filling material comprises 1-7 parts of epoxy resin, 2-4 parts of a toughening agent and 1-4 parts of a hardening agent.
The epoxy resin montmorillonite filling material comprises 4-7 parts of epoxy resin filling material and 3-6 parts of nano montmorillonite.
The epoxy resin is E-44 type epoxy resin, the toughening agent is DBP toughening agent, and the hardener is T31 hardener.
The diluent is acetone.
A3D multi-component composite auxetic metamaterial based on additive manufacturing comprises the following steps:
the method comprises the following steps: additive manufacturing, namely preparing a 3D auxetic metamaterial model in an additive manufacturing mode;
step two: investment casting, namely obtaining a 3D aluminum-based auxetic metamaterial by investment casting, drying, stepped heating, roasting and pressurizing seepage by adopting industrial pure aluminum based on a 3D auxetic metamaterial model;
step three: preparing a polymer filling material, namely mixing epoxy resin, a toughening agent and a hardening agent according to a proportion to obtain an epoxy resin filling material, taking one half of the prepared epoxy resin filling material, continuously adding nano montmorillonite according to a proportion to obtain an epoxy resin montmorillonite filling material, putting the epoxy resin filling material and the epoxy resin montmorillonite filling material into a constant-temperature container, heating to 70 ℃, simultaneously adding a diluting agent, and fully and uniformly stirring until the mixture has good fluidity, thereby obtaining the polymer filling material;
step four: the method comprises the steps of compounding a 3D multi-component composite auxetic metamaterial based on additive manufacturing, enabling a polymer to penetrate into gaps of a 3D aluminum-based auxetic metamaterial structure through a pressure filling method to obtain the composite auxetic metamaterial, and filling the composite auxetic metamaterial into a stainless steel square tube to obtain the 3D multi-component composite auxetic metamaterial.
The stainless steel square tube has the size of 30mm in length, 20mm in width, 14mm in height and 2mm in wall thickness,
finite element simulation analysis was performed using ABAQUS/Explicit. Wherein, the stainless steel square tube and the filling material (epoxy resin or epoxy resin montmorillonite) adopt an eight-node first-order total integral hexahedron unit, and the maximum size of the unit is 0.0005 mm; the 3D auxetic material (aluminum) adopts a four-node first-order tetrahedral unit, and the maximum size of the unit is 0.0003. The tension-expansion metamaterial and the filling material are connected in an embedded constraint mode, and the filling material is in surface-to-surface contact with the stainless steel square tube. The model is a symmetrical structure, in order to save calculation time, 1/4 model is adopted to carry out numerical calculation, and symmetrical boundary conditions are set on the symmetrical plane. And establishing a finite element analysis model and boundary conditions.
And (3) carrying out a compression test by adopting an ISTRON 3369 material testing system, wherein the compression rate is 2mm/min, and obtaining a compression stress strain curve of the material.
According to the simulation result, when the strain is the same, the Milsses stress of the stainless steel square tube is obviously greater than that of the unfilled square tube due to the mutual restriction and interface friction among the base materials of all components in the 3D multi-component composite auxetic super-structural material. Further combining the stress-strain curve and the thin energy absorption curve, the mechanical property and the energy absorption property of the 3D multi-component composite auxetic super-structural material are obviously improved.
TABLE 13D structural parameters of auxetic metamaterial
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a 3D multicomponent composite auxetic metamaterial based on additive manufacturing, includes 3D auxetic metamaterial, polymer filling material and square pipe, its characterized in that: the matrix material of the 3D auxetic metamaterial is industrial pure aluminum, the single cells of the 3D auxetic metamaterial are of an inwards concave honeycomb type, the polymer filling material is epoxy resin, epoxy resin montmorillonite and a diluent, and the square tube is a stainless steel square tube.
2. The additive manufacturing based 3D multicomponent composite auxetic metamaterial according to claim 1, wherein: the diameter D of the 3D auxetic metamaterial unit cell rod element is 0.8-1.2 mm, the length H of the cross rod is 4.2mm, the length L of the inner concave rod is 2.5mm, the inner concave angle is 70 degrees, the number of the unit cells of the material along the X direction is 5, the number of the unit cells of the material along the Y direction is 5, and the number of the unit cells of the material along the Z direction is 3.
3. The additive manufacturing based 3D multicomponent composite auxetic metamaterial according to claim 1, wherein: the epoxy resin filling material comprises 1-7 parts of epoxy resin, 2-4 parts of a toughening agent and 1-4 parts of a hardening agent.
4. The 3D multi-component composite auxetic metamaterial according to claim 1, wherein: the epoxy resin montmorillonite filling material comprises 4-7 parts of epoxy resin filling material and 3-6 parts of nano montmorillonite.
5. 3D multicomponent composite auxetic metamaterial according to claim 3, wherein: the epoxy resin is E-44 type epoxy resin, the toughening agent is DBP toughening agent, and the hardener is T31 hardener.
6. The 3D multi-component composite auxetic metamaterial according to claim 1, wherein: the diluent is acetone.
7. The 3D multi-component composite auxetic metamaterial according to claim 1, wherein: the preparation method comprises the following steps:
the method comprises the following steps: additive manufacturing, namely preparing a 3D auxetic metamaterial photosensitive resin model in an additive manufacturing mode;
step two: investment casting, namely obtaining a 3D aluminum-based auxetic metamaterial by investment casting, drying, stepped heating, roasting and pressurizing seepage by adopting industrial pure aluminum based on a 3D auxetic metamaterial model;
step three: preparing a polymer filling material, namely mixing epoxy resin, a toughening agent and a hardening agent according to a proportion to obtain an epoxy resin filling material, taking one half of the prepared epoxy resin filling material, continuously adding nano montmorillonite according to a proportion to obtain an epoxy resin montmorillonite filling material, putting the epoxy resin filling material and the epoxy resin montmorillonite filling material into a constant-temperature container, heating to 70 ℃, simultaneously adding a diluting agent, and fully and uniformly stirring until the mixture has good fluidity, thereby obtaining the polymer filling material;
step four: and (3) compounding the 3D multi-component composite auxetic metamaterial, enabling a polymer to penetrate into the structural gap of the 3D aluminum-based auxetic metamaterial through a pressure filling method to obtain the composite auxetic metamaterial, and filling the composite auxetic metamaterial into a stainless steel square tube to obtain the 3D multi-component composite auxetic metamaterial.
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| CN115870516A (en) * | 2023-02-22 | 2023-03-31 | 中国机械总院集团沈阳铸造研究所有限公司 | Three-dimensional lattice superstructure based on additive manufacturing and application thereof |
| CN116376225A (en) * | 2023-03-30 | 2023-07-04 | 华中科技大学 | Light high-rigidity high-damping material with self-healing function and application thereof |
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