CN110006626B - Experimental device for simulating response of hull beam to wave load - Google Patents
Experimental device for simulating response of hull beam to wave load Download PDFInfo
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- CN110006626B CN110006626B CN201910312872.4A CN201910312872A CN110006626B CN 110006626 B CN110006626 B CN 110006626B CN 201910312872 A CN201910312872 A CN 201910312872A CN 110006626 B CN110006626 B CN 110006626B
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- 238000012544 monitoring process Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/10—Designing vessels; Predicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
- G09B25/025—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery hydraulic; pneumatic
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Educational Technology (AREA)
- Educational Administration (AREA)
- Business, Economics & Management (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an experimental device for simulating the response of a hull beam to wave load, which consists of a supporting module, a load generating module and a hull beam module, wherein the supporting module consists of a base, a slideway and two brackets, and the hull beam module is parallel to the base and fixed on the two brackets; the load generation module comprises a motor, an eccentric wheel, a push rod and a regulator, wherein the motor is fixed on a motor base and is arranged on a slideway of the support module through a sliding rail, the motor is connected with the eccentric wheel, the eccentric wheel drives the push rod to periodically move up and down, the regulator is arranged at the top end of the push rod, and the regulator is contacted with a ship girder structure when the push rod moves upwards to apply load to the ship girder module. Through the sliding of the load generating module, the rotating speed of the motor and the length of the regulator, the change of the action position, the action frequency and the action amplitude of the wave load applied to the ship body beam module can be simulated, and good experimental support can be provided for teaching, technical research and the like.
Description
Technical Field
The invention relates to an experimental device for simulating the response of a hull beam to wave load, which can simulate the loading effect of the wave load on the hull beam in a real environment and generate a response signal. The device is used for college teaching demonstration or ship enterprises to develop products, and belongs to the technical field of ship structure health monitoring.
Background
The ship structure health monitoring technology is a reliability technology developed by the traditional nondestructive testing technology, can be used for carrying out real-time on-line monitoring on the ship structure state by utilizing the sensing components integrated on the ship structure, can effectively improve the safety of the ship structure, reduce maintenance cost, help to provide maintenance decisions, has important popularization value and is valued by various universities and high-new enterprises. An important task of hull health monitoring is to collect and analyze the response of hull beams under wave loading. When teaching in universities or developing enterprise products, a long-lasting device for automatically simulating wave loads to load the hull beam is required. The action characteristic of the wave load on the hull beam in the real environment is mainly that parameters such as the acting force, the acting position, the acting frequency and the like are all changed. At present, the influence of the simulated wave load on the ship body is less under the laboratory condition, and the response of the ship body under the static load can only be simulated and analyzed by a common experimental device, which is far from the environment condition of the actual use of the ship, and the requirement of accurate research can not be met.
Disclosure of Invention
The invention aims to provide an experimental device for simulating the response of a ship body beam to wave load, which can simulate the loading effect of the wave load on the ship body beam in a real environment and a response signal generated by the ship body beam, reproduce the influence of the environment on the actual use of a ship and has very strong practical significance for the teaching of colleges and universities and the research and development of enterprise products.
In order to achieve the aim, the experimental device for simulating the response of the hull beam to the wave load provided by the invention consists of a supporting module, a load generating module and a hull beam module, wherein the supporting module consists of a strip-shaped base, a slideway arranged on the base and two brackets erected at two ends of the base; the hull beam module includes a hull beam structure and a plurality of sensors mounted thereon; the ship body beam structure is parallel to the base and fixed on the two brackets;
the load generating module is a core module of the device and comprises a motor, an eccentric wheel, a push rod and a regulator, wherein the motor is fixed on a motor base, a slide rail is arranged at the bottom of the motor base and matched with a slide rail of a supporting module, a metal supporting plate which is vertically fixed with the motor base is arranged at one end of the motor base, a rotating shaft of the motor penetrates through the metal supporting plate to be connected with the eccentric wheel, the push rod is arranged at the upper part of the eccentric wheel and is formed into an inverted T shape by a transverse rod and a vertical rod, the transverse rod is connected with the eccentric wheel, the vertical rod is sleeved in a ferrule which is fixed on the metal supporting plate, a spring is sleeved between the ferrule and the transverse rod, and the T-shaped push rod is pushed to periodically move up and down when the eccentric wheel rotates; the top end of the vertical rod is provided with a regulator, and the regulator is contacted with the ship body beam structure when the push rod moves upwards.
And a force sensor is arranged between the regulator and the push rod, and the thrust of the load generating module to the ship body beam structure is measured.
The ship body beam structure is an acting object of the load generation module, and the sensor arranged on the ship body beam structure is arranged according to monitoring requirements, such as acceleration, stress strain sensors and the like.
The load generating module can move on the base along the slideway, and the position of the load generating module for applying load to the ship girder structure is variable.
The motor is a speed regulating motor, the rotation speed of the motor is regulated, and the load acting frequency of the load generating module on the ship body beam structure can be correspondingly changed.
The length of the regulator is adjustable, and the load acting amplitude of the load generating module on the ship body beam structure can be correspondingly changed.
The experimental device for simulating the response of the hull beam to the wave load has the following beneficial effects:
1. when the ship beam responds to the wave load, the motor is started, the motor rotor drives the eccentric wheel to rotate, the eccentric wheel pushes the push rod to periodically move up and down, and then the ship beam structure is driven to move, so that the ship beam structure can automatically generate motion response for a long time, the sensor arranged on the ship beam structure is arranged according to monitoring requirements, such as acceleration, stress strain sensor and the like, and the ship beam structure response signal is transmitted to the signal monitoring processing equipment to acquire and monitor the ship beam structure in real time.
2. The ship girder structure is an acting object of the load generating module, the load generating module can move on the base, the requirement on the change of the load acting position of the ship girder structure is met, the function of changing the load acting frequency of the ship girder structure is met by adjusting the rotating speed of the speed regulating motor, the function of changing the load acting amplitude of the ship girder structure is met by adjusting the length of the regulator, and therefore response signals under the action of wave loads, particularly stress and acceleration signals of the simulation structure, of the ship in actual use are truly reproduced. The device can be used for researching and applying a model machine of a ship body structure monitoring health monitoring system principle under laboratory conditions, and has good auxiliary effects on teaching, technical research and the like.
The invention is described in further detail below with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a load generating module according to the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
reference numerals illustrate:
a base 11, a slideway 12 and a bracket 13;
slide rail 21, motor base 22, motor 23, metal support plate 24, eccentric 25, push rod 26, cross bar 261, vertical bar 262, spring 27, ferrule 28, and regulator 29;
hull beam structure 31, sensor 32.
Detailed Description
An experimental device for simulating the response of a hull beam to wave loads, as shown in fig. 1, consists of a support module, a load generating module and a hull beam module. The support module is composed of a strip-shaped base 11, a slideway 12 arranged on the base, and two brackets 13 erected at two ends of the base, wherein the slideway 12 is fixedly arranged along the length direction of the base 11, and the two brackets 13 are fixedly arranged at two ends of the base 11 to form the support module.
As shown in fig. 1, the hull girder comprises a hull girder structure 31 and a plurality of sensors 32 mounted thereon, wherein the hull girder structure 31 is fixed between two brackets 13 in parallel with a base 11, and the sensors mounted thereon are mounted according to monitoring requirements, such as acceleration, stress strain sensors and the like, and are connected with signal monitoring processing equipment.
As shown in fig. 2 to 4, the load generating module is a core module of the device and mainly comprises a motor 23, an eccentric wheel 25, a push rod 26 and a regulator 29, wherein the motor 23 is fixed on a motor base 22, a sliding rail 21 is arranged at the bottom of the motor base, the sliding rail 21 is matched with a sliding rail 12 of a supporting module for use, a metal supporting plate 24 vertically fixed with the motor base 22 is arranged at one end of the motor base 22, a rotating shaft of the motor 23 penetrates through the metal supporting plate 24 and is connected with the eccentric wheel 25, the push rod 26 is arranged at the upper part of the eccentric wheel 25, the push rod 26 is of an inverted T shape formed by a transverse rod and a vertical rod, the transverse rod 261 is connected with the eccentric wheel 25, the vertical rod 262 is sleeved in a sleeve ring 28 fixed on the metal supporting plate 24, the vertical rod 262 is sleeved with a spring 27 between the sleeve ring 28 and the transverse rod 261, and the eccentric wheel 25 is pushed to periodically move up and down when rotating; the top of the vertical rod 262 is provided with a force regulator 29, when the eccentric wheel 25 drives the push rod 26 to move upwards, the force regulator 29 is contacted with the ship girder structure 31, a force sensor is arranged between the force regulator 29 and the push rod 26, and the force sensor is connected with signal monitoring and processing equipment to measure the thrust loaded on the ship girder structure 31. The slide rail 21 of the load generating module is mounted on the slide rail 12 of the supporting module, so that the load generating module and the supporting module are mounted.
When the experimental device for simulating the response of the hull beam to the wave load is used, the motor 23 is started, the motor rotor drives the eccentric wheel 25 to rotate, the eccentric wheel 25 pushes the push rod 26 to periodically move up and down, and then the hull beam structure 31 is driven to move, so that the hull beam structure can automatically generate motion response for a long time; meanwhile, the load generating module can move on the supporting module, the requirement on the change of the load action position of the ship body beam structure is met, the function of changing the load action frequency of the ship body beam structure is met by adjusting the rotating speed of the speed regulating motor, the function of changing the load action amplitude of the ship body beam structure is met by adjusting the length of the regulator, and accordingly response signals influenced by the environment when the ship is actually used are truly reproduced, and good experimental support can be provided for teaching, technical research and the like.
Claims (4)
1. Experimental device for simulation hull roof beam is to wave load response, its characterized in that: the ship comprises a supporting module, a load generating module and a ship body beam module, wherein the supporting module consists of a strip-shaped base, a slideway arranged on the base and two brackets erected at two ends of the base; the hull beam module includes a hull beam structure and a plurality of sensors mounted thereon; the ship body beam structure is parallel to the base and fixed on the two brackets; the load generating module comprises a motor, an eccentric wheel, a push rod and a regulator, wherein the motor is fixed on a motor base, a slide rail is arranged at the bottom of the motor base and is matched with a slide rail of the supporting module, a metal supporting plate which is vertically fixed with the motor base is arranged at one end of the motor base, a rotating shaft of the motor penetrates through the metal supporting plate and is connected with the eccentric wheel, the push rod is arranged at the upper part of the eccentric wheel, the push rod consists of a transverse rod and a vertical rod which form an inverted T shape, the transverse rod is connected with the eccentric wheel, the vertical rod is sleeved in a ferrule which is fixed on the metal supporting plate, a spring is sleeved between the ferrule and the transverse rod, and the push rod is pushed to periodically move up and down when the eccentric wheel rotates; the top end of the vertical rod is provided with a regulator, and the regulator is contacted with the hull girder structure when the push rod moves upwards; the ship body beam structure is an acting object of the load generation module, the plurality of sensors arranged on the ship body beam structure are arranged according to monitoring requirements, the load generation module can move on the base along the slideway, and the position of the load generation module for applying load to the ship body beam structure is variable.
2. The experimental device for simulating the response of a hull beam to a wave load according to claim 1, wherein a force sensor is arranged between the force regulator and the push rod for measuring the thrust of the load generating module to the hull beam structure.
3. An experimental setup for simulating hull girder response to wave load according to claim 1, characterized in that: the motor is a speed regulating motor, the rotation speed of the motor is regulated, and the load acting frequency of the load generating module on the ship body beam structure can be correspondingly changed.
4. An experimental setup for simulating hull girder response to wave load according to claim 1, characterized in that: the length of the regulator is adjustable, the length of the regulator is adjusted, and the load acting amplitude of the load generating module on the ship body beam structure can be correspondingly changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312872.4A CN110006626B (en) | 2019-04-18 | 2019-04-18 | Experimental device for simulating response of hull beam to wave load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312872.4A CN110006626B (en) | 2019-04-18 | 2019-04-18 | Experimental device for simulating response of hull beam to wave load |
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| CN110006626A CN110006626A (en) | 2019-07-12 |
| CN110006626B true CN110006626B (en) | 2024-03-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110371242B (en) * | 2019-08-05 | 2020-07-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Standard ship model suitable for multiple measurement systems |
| CN113552013A (en) * | 2021-07-08 | 2021-10-26 | 中国科学院力学研究所 | Fatigue experiment device for metal additive manufacturing parts |
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