CN114576257A - Vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure - Google Patents
Vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure Download PDFInfo
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- CN114576257A CN114576257A CN202210134979.6A CN202210134979A CN114576257A CN 114576257 A CN114576257 A CN 114576257A CN 202210134979 A CN202210134979 A CN 202210134979A CN 114576257 A CN114576257 A CN 114576257A
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- transmission shaft
- periodic
- fiber composite
- carbon fiber
- main body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/026—Shafts made of fibre reinforced resin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/30—Material joints
- F16C2226/40—Material joints with adhesive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
Abstract
The invention provides a vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on a periodic structure, which comprises a transmission shaft main body, connecting flanges and a plurality of periodic units, wherein the connecting flanges are arranged at two ends of the transmission shaft main body, the periodic units are axially distributed on the transmission shaft main body, each periodic unit is composed of a plurality of periodic unit cells, the number of the periodic unit cells is not less than two, the number of the periodic unit cells in each periodic unit cell is not less than two, and the materials, the structures and the sizes of the corresponding periodic unit cells in each periodic unit cell are the same. The shell-pulling circular tube structure is characterized in that a plurality of shell-pulling circular tube structures with different diameters, axial widths, wall thicknesses and other dimensions are selected to be distributed along the axial direction periodically to form a periodic structure, so that elastic waves with specific frequency are prevented from being transmitted, a band gap effect is formed, compared with a common carbon fiber composite transmission shaft, the vibration isolation frequency band and amplitude are remarkably improved, a better vibration isolation effect is achieved, and the shell-pulling circular tube structure can be widely applied to the field of vibration isolation of a transmission shaft system.
Description
Technical Field
The invention belongs to the technical field of vibration reduction and noise reduction, and particularly relates to a carbon fiber composite vibration reduction and isolation transmission shaft based on a periodic structure.
Background
The periodic structure is a structural form formed by repeatedly arranging basic units according to a certain rule, and is widely applied to the fields of aerospace, ships, vehicles, engineering buildings and the like, such as periodic honeycomb structures, periodic grid structures and the like. When vibration waves are transmitted in a periodic structure, the transmission of the waves can be inhibited in a certain frequency range due to the periodic change of impedance, so that a band gap effect occurs, and vibration and noise reduction in a specific frequency range can be realized by reasonably designing a band gap.
The vibration reduction and vibration isolation method of the transmission shaft system has the advantages that firstly, the vibration of the transmission part is reduced by improving the performance of parts, and secondly, the vibration isolation technology is used for reducing the vibration of the transmission system to be transmitted outwards. Due to the limitation of spatial arrangement, the application difficulty of vibration isolation technology and devices in many practical transmission systems is large.
The vibration reduction and isolation transmission shaft made of the carbon fiber composite material based on the periodic structure is characterized in that the periodic structure is constructed in the transmission shaft under the condition that the main structure size of the transmission shaft is not changed, the vibration reduction and isolation transmission shaft can be used for vibration reduction and isolation of various transmission shafting, and the vibration reduction and isolation mechanism is that the band gap effect of the periodic structure and the characteristic of good damping performance of the carbon fiber composite material are utilized to block and reduce the outward transmission of the vibration of a power part through the transmission shafting, so that the purposes of vibration reduction and noise reduction are achieved. The traditional metal transmission shaft has the functions of transmitting power and motion in a shaft system, and the carbon fiber composite vibration reduction and isolation transmission shaft based on the periodic structure not only completes the functions of transmitting power and motion, but also completes the functions of vibration reduction and isolation.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a carbon fiber composite vibration reduction and isolation transmission shaft based on a periodic structure, and the periodic structure is constructed on the carbon fiber composite vibration reduction and isolation transmission shaft, so that the purposes of vibration reduction and isolation of a transmission shaft system are achieved. In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure which characterized in that: the transmission shaft comprises a transmission shaft main body, connecting flanges arranged at two ends of the transmission shaft main body and a plurality of periodic units axially distributed on the transmission shaft main body, wherein each periodic unit consists of a plurality of periodic cells, the number of the periodic units is not less than two, the number of the periodic cells in each periodic unit is not less than two, and the corresponding periodic cells in each periodic unit are identical in material, structure and size.
The periodic unit cells are of a shell-drawing type structure, one periodic unit cell is composed of a plurality of different periodic unit cells, and at least one of the different periodic unit cells is different in structure and size such as diameter, axial width and wall thickness of a pipe wall.
The maximum diameter of the periodic unit cell is smaller than or equal to the diameter of the connecting flange, and the minimum diameter of the periodic unit cell is larger than the diameter of the transmission shaft main body.
The transmission shaft main body and the periodic unit are processed by the same high-modulus carbon fiber composite material (such as M40J or SYM 40) or are integrally formed by other fiber composite materials such as medium-modulus carbon fiber composite material and glass fiber composite material, and the surface of the carbon fiber composite material is coated with a high-damping material to enhance the vibration and noise reduction performance.
The connecting flange is made of the same material as the transmission shaft main body and is integrally formed with the transmission shaft main body, or is made of other materials (such as 30CrMnSi and the like), and then is connected with the transmission shaft main body after being processed, and the connecting mode adopts glue joint connection, mechanical connection or mixed connection.
The included angle between the end face of the periodic cell and the axis of the transmission shaft is 75-90 degrees, the different included angles between the end face of the periodic cell and the axis of the transmission shaft can affect the rigidity of the periodic cell and can affect the vibration amplitude attenuation effect and the vibration isolation frequency band, and the included angle between the end face of the periodic cell and the axis of the transmission shaft is 75-90 degrees based on the above effects and from the perspective of the forming process.
The cycle unit is composed of cycle cells formed by a shell-drawing structure which is continuous along the axial direction of the transmission shaft main body, is a complex cavity structural member, and can be molded and processed by adopting processes such as compression molding based on a water-soluble core mold.
The invention has the following advantages:
compared with the traditional metal carbon fiber composite transmission shaft, the carbon fiber composite vibration reduction and isolation transmission shaft based on the periodic structure not only completes the functions of power transmission and motion, but also completes the functions of vibration reduction and isolation.
The shell-pulling circular tube structure is characterized in that a plurality of shell-pulling circular tube structures with different diameters, axial widths, wall thicknesses and other dimensions are selected to be distributed along the axial direction periodically to form a periodic structure, so that elastic waves with specific frequency are prevented from being transmitted, a band gap effect is formed, compared with a common carbon fiber composite transmission shaft, the vibration isolation frequency band and amplitude are remarkably improved, a better vibration isolation effect is achieved, and the shell-pulling circular tube structure can be widely applied to the field of vibration isolation of a transmission shaft system.
Drawings
FIG. 1 is a schematic view of a vibration reduction and isolation transmission shaft according to the present invention;
FIG. 2 is a sectional view of the vibration reducing and isolating transmission shaft according to the present invention;
FIG. 3 is a schematic structural diagram of a vibration reduction and isolation simulation verification scheme according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second vibration damping and isolating simulation verification scheme according to an embodiment of the invention;
FIG. 5 is an acceleration response curve after applying a stimulus for scenario one and scenario two;
wherein: 1-transmission shaft main body, 2-period unit, 3-connecting flange, 4-period unit cell A, 5-period unit cell B, 6-period unit cell C and 7-period unit cell D.
Detailed Description
As shown in fig. 1 and 2, the main body 1 of the vibration reduction and isolation transmission shaft made of carbon fiber composite material based on a periodic structure is a hollow shaft structure, the material is carbon fiber composite material (such as M40J or SYM 40), and the two ends are provided with connecting flanges 3, the connecting flanges and the main body of the transmission shaft can be made of the same material or metal material (such as 30 CrMnSi); when the connecting flange is made of metal materials, the connecting flange and the transmission shaft main body can be connected by glue joint, mechanical connection or mixed connection.
A periodic unit 2 structure is arranged between the transmission shaft main body 1 and the connecting flange 3, and the periodic unit structure is a carbon fiber composite material shell-drawing structure and is integrally formed with the transmission shaft main body.
The carbon fiber composite material shell-drawing structure of the periodic unit can be manufactured by adopting a water-soluble material core mold, can be manufactured by taking a polyvinyl alcohol aqueous solution as a base material and model sand as a reinforcing material through a hot drying process, and can also be manufactured by adopting other disposable core mold manufacturing processes. The core mold manufacturing method comprises the following specific steps: the method comprises the following steps of mold design, mold surface treatment, core mold preforming tamping, core mold surface repairing, surface sealing, heating drying, demolding and the like.
The manufacturing method of the carbon fiber composite material shell pulling structure comprises the following specific steps: and winding or laying the carbon fiber composite material on the manufactured core mold, then completing the processes of compression molding, curing and the like, placing the manufactured shell-drawing structure into static normal-temperature tap water, and completely dissolving the core mold to obtain the carbon fiber composite material shell-drawing structure.
The transmission shaft main body 1, the connecting flange 3 and the periodic unit 2 can also be integrally formed by adopting metal materials through processes such as 3D printing and the like;
the periodic structure of the invention is subjected to example simulation verification. Fig. 3 is a simulation scheme I, fig. 4 is a simulation scheme II, the materials are all T700-grade carbon fiber composite materials, the total heights of the scheme I and the scheme II are both 220mm, the diameters of flanges at two ends are 220mm, the heights of the flanges are 20mm, the outer diameter of a transmission shaft main body is 120mm, and the wall thickness is 5 mm. The whole structure of the second scheme is a periodic structure, the shell-pulling design is adopted, the shell-pulling thickness is 5mm, and the wall thickness is consistent with that of the first scheme; the outer diameter of the periodic unit cell C6 is 200mm, and the height is 20 mm; the outer diameter of the periodic unit cell D7 is 160mm, and the height is 20 mm. And applying periodic acceleration excitation to the upper end of the flange, and measuring the acceleration change of the lower end. Acceleration excitation with the frequency of 2 pi Hz is respectively applied to obtain response curves of the scheme I and the scheme II, which are shown in figure 5 and show that the periodic structure has obvious vibration reduction effect.
The protective scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (7)
1. The utility model provides a vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure which characterized in that: the transmission shaft comprises a transmission shaft main body, connecting flanges arranged at two ends of the transmission shaft main body and a plurality of periodic units axially distributed on the transmission shaft main body, wherein each periodic unit consists of a plurality of periodic cells, the number of the periodic units is not less than two, the number of the periodic cells in each periodic unit is not less than two, and the corresponding periodic cells in each periodic unit are identical in material, structure and size.
2. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the periodic unit cells are of a shell-drawing type structure, one periodic unit cell is composed of a plurality of different periodic unit cells, and at least one of the diameter, the axial width and the wall thickness structure and the size of the pipe wall among the different periodic unit cells is different.
3. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the maximum diameter of the periodic unit cell is smaller than or equal to the diameter of the connecting flange, and the minimum diameter of the periodic unit cell is larger than the diameter of the transmission shaft main body.
4. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the transmission shaft main body and the periodic unit are processed by the same high-modulus carbon fiber composite material, medium-modulus carbon fiber composite material or glass fiber composite material and are integrally formed, and the surface of the composite material is coated with a high-damping material to enhance the vibration and noise reduction performance.
5. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the connecting flange is made of the same material as the transmission shaft main body and is integrally formed with the transmission shaft main body or is made of a metal material, the connecting flange is connected with the transmission shaft main body after being processed, and the connecting mode adopts glue joint connection, mechanical connection or mixed connection.
6. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the included angle between the end face of the periodic unit cell and the axis of the transmission shaft is 75 degrees and 90 degrees.
7. The vibration reduction and isolation transmission shaft made of carbon fiber composite materials based on the periodic structure as claimed in claim 1, wherein: the cycle unit is a complex cavity structural part, and the molding processing of the cycle unit is completed by a compression molding process based on a water-soluble core mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134979.6A CN114576257A (en) | 2022-02-14 | 2022-02-14 | Vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134979.6A CN114576257A (en) | 2022-02-14 | 2022-02-14 | Vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure |
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| Publication Number | Publication Date |
|---|---|
| CN114576257A true CN114576257A (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210134979.6A Pending CN114576257A (en) | 2022-02-14 | 2022-02-14 | Vibration reduction and isolation transmission shaft made of carbon fiber composite material based on periodic structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114802043A (en) * | 2022-06-27 | 2022-07-29 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080023899A1 (en) * | 2006-07-28 | 2008-01-31 | Tokai Rubber Industries, Ltd. | Cylindrical vibration-damping device and method of producing the same, and vibration-damping structure including the cylindrical vibration-damping device |
| JP2011190931A (en) * | 2010-02-17 | 2011-09-29 | Toray Ind Inc | Propeller shaft |
| CN205503725U (en) * | 2016-03-22 | 2016-08-24 | 重庆工商职业学院 | Transmission shaft of making an uproar falls in car |
| US20210221072A1 (en) * | 2020-01-21 | 2021-07-22 | Goodrich Corporation | Flexible thermoplastic composite coupling and method of manufacture |
-
2022
- 2022-02-14 CN CN202210134979.6A patent/CN114576257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080023899A1 (en) * | 2006-07-28 | 2008-01-31 | Tokai Rubber Industries, Ltd. | Cylindrical vibration-damping device and method of producing the same, and vibration-damping structure including the cylindrical vibration-damping device |
| JP2011190931A (en) * | 2010-02-17 | 2011-09-29 | Toray Ind Inc | Propeller shaft |
| CN205503725U (en) * | 2016-03-22 | 2016-08-24 | 重庆工商职业学院 | Transmission shaft of making an uproar falls in car |
| US20210221072A1 (en) * | 2020-01-21 | 2021-07-22 | Goodrich Corporation | Flexible thermoplastic composite coupling and method of manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114802043A (en) * | 2022-06-27 | 2022-07-29 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
| CN114802043B (en) * | 2022-06-27 | 2022-09-23 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
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