CN106568572A - Ship model coupling acting force measurement apparatus and method thereof - Google Patents
Ship model coupling acting force measurement apparatus and method thereof Download PDFInfo
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- CN106568572A CN106568572A CN201610956510.5A CN201610956510A CN106568572A CN 106568572 A CN106568572 A CN 106568572A CN 201610956510 A CN201610956510 A CN 201610956510A CN 106568572 A CN106568572 A CN 106568572A
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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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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to a ship model coupling acting force measurement apparatus. The apparatus comprises a force measuring pillar, unidirectional force dynamometers and a dynamometry platform. The force measuring pillar and the unidirectional force dynamometers are matches with each other. At least three unidirectional force dynamometers are included. At least two dynamometers are used for measuring a transverse acting force and at least one dynamometer is used for measuring a vertical acting force. The invention also relates to a ship model coupling acting force measurement method. The plurality of unidirectional force dynamometers are used to measure the transverse acting forces of at least two positions and the vertical acting force of at least one position on a ship model which is moved in the water. According to the measured forces and the positions of the forces on the ship model, through composite calculation of the forces, a real-time vertical force, a transverse force and a head turning moment of the ship model during a moving process are acquired. By using the apparatus and the method of the invention, a problem that a general measuring apparatus is difficult to completely overcome mutual interference of coupling force measurement is solved from a design idea aspect, and measurement precision of a ship body coupling force can be obviously increased.
Description
Technical field
The present invention relates to ship experiment field, more particularly to a kind of ship model coupling force measuring device and method can be with
Measurement longitudinal force of the coupling on ship model, cross force and flywheel moment.
Background technology
1871, the W. Froude of Britain have built First in the world was used for dragging for ship model resistance of motion measurement
Pond is draged, hereafter, the test of ship model hydrodynamic performance has rapidly become and built the indispensable foundation stone of Marine engineering subject, and
The progress of shipbuilding technology has been promoted greatly.At present, the ship model test towing tank that built up in the world or built, stormy waves flowing water
Pond, rotating arm basin etc. there are about more than 100, and the most basic pilot project of these experimental tanks is exactly the hydrodynamic measurement of ship model.
The most basic method of ship model hydrodynamic measurement is moved in pond with certain speed with trailer traction ship model, is used
Force cell measures traction power of the trailer to ship model, effect of the water to ship model when moving with certain speed that be equivalent to ship model
Power, that is, hydrodynamic force.Ship hydrodynamics result of the test can apply to real ship Resistance Prediction and power budget, lower resistance ship shape
Many aspects such as optimization design, the verification of ship hydrodynamics computational theory, therefore accurately measurement ship model hydrodynamic force is ship model examination
Test extremely important in field and very basic work.
Ship model hydrodynamic measurement precision has direct relation with hydrodynamic measurement equipment.Hydrodynamic measurement equipment can be divided into
Single component measuring apparatus and multi dimension measuring apparatus.When to be measured ship model sail through to when the resistance of motion when, due to model speed side
To parallel with the longitudinally asymmetric face of ship model, so only needing to measure the longitudinal direction list component that ship model is subject to, single component measuring apparatus
As the action direction of power is single, general strain gauge dynamometer can just obtain very high precision.
But with going deep into that ship hydrodynamic performance is studied, the measurement of ship model list component can not meet wanting for researcher
Ask.Such as want measurement Research closely the Hydrodynamic adjustment of parallel two ship when, now act on the hydrodynamic force on hull while having
Longitudinal force, cross force and turn three kinds of forms of first torque, and three is coupling；Water during measurement Research ship model loxodrome is wanted for another example
During power, as there is angle in model speed direction and the longitudinally asymmetric face of ship model, now hull be also by longitudinal force, cross force and
Turn first torque collective effect.
For the measurement of hull bonding force, the equipment for generally adopting at present is to measure longitudinal force measuring cell, cross force
Element, turn first torgue measurement element are assembled into the combined measuring device of an entirety, and each measuring cell is all based in itself should
Variant measuring principle.This combination type multi dimension measurement apparatus are arranged between ship model and trailer, hull can be directly measured
Cross force, longitudinal force and turn first torque that when moving with trailer, water is acted on hull.This combination type multi dimension measurement apparatus
Maximum problem is to be difficult to avoid interfering between each component completely.Cross force is only loaded in the measurement apparatus
When, may output have " longitudinal force " or " turn first torque ", and when only loading " turning first torque ", may output have " cross force " or
" longitudinal force ", this combination type multi dimension measurement apparatus are difficult to the high-acruracy survey of ship model coupling power.
For the high-precise synchronization measurement problem for solving ship model cross force, longitudinal force, turning first torque, the invention provides one
Plant distributed ship model coupling force measuring device and method.
The content of the invention
The purpose of the present invention is difficult to avoid that between each component in being primarily directed to current ship model bonding force measurement and interferes
Problem, there is provided a kind of distributed ship model coupling force measuring device and method, prevented each component from ultimate principle to surveying
The interference of amount signal, it is possible to achieve ship model longitudinal force, cross force, the high-precise synchronization measurement of turn first torque.
For achieving the above object, the present invention is adopted the following technical scheme that：
Ship model coupling force measuring device, including dynamometry pillar, unidirectional force ergometer, force plate/platform；The dynamometry pillar with
Unidirectional force ergometer is supported the use, and described dynamometry pillar one end is fixedly connected with unidirectional force ergometer, the other end and the dynamometry
Platform is fixedly connected, and the unidirectional force ergometer is fixedly connected with ship model；The ship model coupling force measuring device is comprising extremely
Few three unidirectional force ergometers, wherein at least two are used to measure horizontal force, and at least one is used to measure longitudinal force.
As the preferred version of such scheme, the ship model coupling force measuring device comprising three dynamometry pillars, three
Individual unidirectional force ergometer, a force plate/platform；Three dynamometry pillars are fixedly connected with the force plate/platform 1；Unidirectional force is surveyed
Power device 5 is arranged on dynamometry pillar 2, and is fixedly connected with 8 front portion of ship model, the horizontal work that unidirectional force ergometer 5 is measured at this
Firmly；Unidirectional force ergometer 6 is arranged on dynamometry pillar 3, and is fixedly connected with the middle part of ship model 8,6 measurements of unidirectional force ergometer
Longitudinal force at this；Unidirectional force ergometer 7 is arranged on dynamometry pillar 4, and is fixedly connected with 8 rear portion of ship model, unidirectional force
Ergometer 7 measures the horizontal force at this.
Further, unidirectional force ergometer 5 is located at the region of 8 anterior disembarkation mould head end 0%～40% of ship model, unidirectional force dynamometry
Device 6 is located at the region of 8 middle part disembarkation mould head end 40%～60% of ship model, and unidirectional force ergometer 7 is located at 8 rear portion disembarkation mould head end of ship model
60%～100% region.
The measurement process of the ship model coupling force measuring device is：Force plate/platform 1 is fixedly connected with trailer 9, when
When trailer 9 is moved with certain speed, trailer 9 drives ship model 8 to move in pond by force plate/platform 1, and now described is unidirectional
Power ergometer 5, unidirectional force ergometer 7 measure the horizontal force at respective position respectively, and described unidirectional force ergometer 6 is measured
Longitudinal force at its position, then again through the composite calulation of power, it is possible to readily obtain ship model in motor process
Real-time longitudinal force, cross force and turn first torque.
Ship model coupling force measuring method, using trailer traction ship model in water exercise, using at least three unidirectional forces
Ergometer measures traction power of the trailer to ship model, and wherein at least includes two horizontal forces and a longitudinal force, according to
Measured power and its position on ship model, through the composite calulation of power, obtain ship model longitudinal in real time in motor process
Power, cross force and turn first torque.
Used as the preferred version of such scheme, the ship model coupling force measuring method is comprised the following steps：
A, three unidirectional force ergometers are fixedly connected with ship model 8 respectively, and three unidirectional force ergometers are passed through respectively
Dynamometry pillar is fixedly connected with force plate/platform 1；Unidirectional force ergometer 5 is arranged on dynamometry pillar 2, and anterior with ship model 8 fixed
Connection, 5 installation site of unidirectional force ergometer are L with the fore-and-aft distance of ship model center of gravity 101, only measure the horizontal force F at this1,
The starboard of ship model is pointed to for just in the direction of power；Unidirectional force ergometer 6 is arranged on dynamometry pillar 3, and with ship model 8 in the middle part of fixed connect
Connect, 6 installation site of unidirectional force ergometer is L with the fore-and-aft distance of ship model center of gravity 102, only measure the longitudinal force F at this2, power
Direction point to the stem of ship model for just；Unidirectional force ergometer 7 is arranged on dynamometry pillar 4, and fixes company with 8 rear portion of ship model
Connect, 7 installation site of unidirectional force ergometer is L with the fore-and-aft distance of ship model center of gravity 103, only measure the horizontal force F at this3, power
Direction point to the starboard of ship model for just；
B, force plate/platform 1 is fixedly connected with trailer 9, the trailer 9 will drive ship model 8 in water by force plate/platform 1 when moving
Move in pond；
C, make trailer 9 and moved with certain speed, described unidirectional force ergometer 5, unidirectional force ergometer 7 measure respective position respectively
The horizontal force F at place1、F3, described unidirectional force ergometer 6 measures the longitudinal force F at its position2；
D, calculating ship model real-time longitudinal force, cross force and turn first torque in motor process；Longitudinal force X=F2, cross force Y=
F1+ F3, first torque M=F in corresponding turn of ship model center of gravity1×L1- F3×L3。
The Advantageous Effects of the present invention：
（1）The present invention obtains the longitudinal direction of hull by the measurement to unidirectional force at fore-body, middle part, three, rear portion position
Power, cross force and turn first torque, have prevented the bonding force measurement phase that general measure device is difficult to overcome completely from design philosophy
Mutually the problem of interference, can significantly improve the certainty of measurement of hull bonding force.
（2）Compared with general multi dimension measuring instrument, used unidirectional force ergometer in the present invention, technology maturation, very
Higher certainty of measurement is readily available, is demarcated and is checked simply, change convenient, the maintainability and reliability of a whole set of measurement apparatus are very
It is high.
Description of the drawings
Fig. 1 is arranged on the coupling force measuring device of the ship model on ship model；
Fig. 2 ship models coupling force measuring device is arranged on the schematic diagram on trailer；
Fig. 3 ship models couple the front view of force measuring device；
Wherein：
1 --- force plate/platform；2 --- dynamometry pillar；3 --- dynamometry pillar；
4 --- number dynamometry pillar；5 --- unidirectional force ergometer；6 --- unidirectional force ergometer；
7 --- unidirectional force ergometer；8 --- ship model；9 --- trailer；
10 --- ship model center of gravity.
Specific embodiment
With reference to the accompanying drawings embodiment is described in detail.
Ship model coupling force measuring device, the measurement apparatus include that dynamometry pillar, unidirectional force ergometer, dynamometry are put down
Platform；The dynamometry pillar is supported the use with unidirectional force ergometer, and described dynamometry pillar one end is fixedly connected with unidirectional force ergometer,
The other end is fixedly connected with the force plate/platform, and the unidirectional force ergometer is fixedly connected with ship model；The ship model coupling
Force measuring device includes at least three unidirectional force ergometers, and wherein at least two is used to measure horizontal force, and at least one uses
In measurement longitudinal force.
As shown in figure 1, ship model coupling force measuring device of the present invention is by force plate/platform 1, dynamometry pillar 2, dynamometry pillar 3, survey
Power pillar 4, unidirectional force ergometer 5, unidirectional force ergometer 6, unidirectional force ergometer 7 are constituted.Unidirectional force ergometer 5 is arranged onNumber
On dynamometry pillar 2, and it is fixedly connected with 8 front portion of ship model, unidirectional force ergometer 5 measures the horizontal force at this；Unidirectional force
Ergometer 6 is arranged on dynamometry pillar 3, and is fixedly connected with the middle part of ship model 8, and unidirectional force ergometer 6 measures the longitudinal direction at this
Active force；Unidirectional force ergometer 7 is arranged on dynamometry pillar 4, and is fixedly connected with 8 rear portion of ship model, 7 surveys of unidirectional force ergometer
Measure the horizontal force at this.
In such scheme, unidirectional force ergometer 5 is located at the region of 8 anterior disembarkation mould head end 0%～40% of surveyed ship model, single
The region of 8 middle part disembarkation mould head end 40%～60% of surveyed ship model is located to power ergometer 6, unidirectional force ergometer 7 is positioned at institute's survey ship
The region of 8 rear portion disembarkation mould head end 60%～100% of mould.
As shown in Fig. 2 force plate/platform 1 is fixedly connected with trailer 9.
The measurement process of the ship model coupling force measuring device is：When trailer 9 is moved with certain speed, trailer 9
Ship model 8 is driven to move in pond by force plate/platform 1, now described unidirectional force ergometer 5, unidirectional force ergometer 7 are distinguished
The horizontal force at respective position is measured, described unidirectional force ergometer 6 measures the longitudinal force at its position, Ran Houzai
Through the composite calulation of power, it is possible to readily obtain ship model real-time longitudinal force, cross force and turn first power in motor process
Square.
Ship model coupling force measuring method, using trailer traction ship model in water exercise, using at least three unidirectional forces
Ergometer measures traction power of the trailer to ship model, and wherein at least includes two horizontal forces and a longitudinal force, according to
Measured power and its position on ship model, through the composite calulation of power, obtain ship model longitudinal in real time in motor process
Power, cross force and turn first torque.
As the preferred version of the ship model coupling force measuring method, three unidirectional force dynamometry in the present embodiment, are utilized
Device surveying vessel mode coupling active force, as shown in figure 3,5 installation site of unidirectional force ergometer with the fore-and-aft distance of ship model center of gravity 10 is
L1, only measure the horizontal force F at this1, the starboard of ship model is pointed to for just in the direction of power；6 installation site of unidirectional force ergometer with
The fore-and-aft distance of ship model center of gravity 10 is L2, only measure the longitudinal force F at this2, the stem of ship model is pointed to for just in the direction of power；
7 installation site of unidirectional force ergometer is L with the fore-and-aft distance of ship model center of gravity 103, only measure the horizontal force F at this3, power
The starboard of ship model is pointed to for just in direction.
The preferably ship model coupling force measuring method is comprised the following steps：
A, three unidirectional force ergometers are fixedly connected with ship model 8 respectively, and three unidirectional force ergometers are passed through respectively
Dynamometry pillar is fixedly connected with force plate/platform 1；Unidirectional force ergometer 5 is arranged on dynamometry pillar 2, and anterior with ship model 8 fixed
Connection, 5 installation site of unidirectional force ergometer are L with the fore-and-aft distance of ship model center of gravity 101, only measure the horizontal force F at this1,
The starboard of ship model is pointed to for just in the direction of power；Unidirectional force ergometer 6 is arranged on dynamometry pillar 3, and with ship model 8 in the middle part of fixed connect
Connect, 6 installation site of unidirectional force ergometer is L with the fore-and-aft distance of ship model center of gravity 102, only measure the longitudinal force F at this2, power
Direction point to the stem of ship model for just；Unidirectional force ergometer 7 is arranged on dynamometry pillar 4, and fixes company with 8 rear portion of ship model
Connect, 7 installation site of unidirectional force ergometer is L with the fore-and-aft distance of ship model center of gravity 103, only measure the horizontal force F at this3, power
Direction point to the starboard of ship model for just；
B, force plate/platform 1 is fixedly connected with trailer 9, the trailer 9 will drive ship model 8 in water by force plate/platform 1 when moving
Move in pond；
C, make trailer 8 and moved with certain speed, described unidirectional force ergometer 5, unidirectional force ergometer 7 measure respective position respectively
The horizontal force F at place1、F3, described unidirectional force ergometer 6 measures the longitudinal force F at its position2；
D, calculating ship model 8 real-time longitudinal force, cross force and turn first torque in motor process；Longitudinal force X=F2, cross force Y=
F1+ F3, first torque M=F in corresponding turn of ship model center of gravity1×L1- F3×L3。
Claims (5)
1. ship model coupling force measuring device, it is characterised in that：Including dynamometry pillar, unidirectional force ergometer, force plate/platform；Institute
State dynamometry pillar to support the use with unidirectional force ergometer, described dynamometry pillar one end is fixedly connected with unidirectional force ergometer, another
End is fixedly connected with the force plate/platform, and the unidirectional force ergometer is fixedly connected with ship model；The ship model coupling power is surveyed
Amount device includes at least three unidirectional force ergometers, and wherein at least two is used to measure horizontal force, and at least one is used to survey
Amount longitudinal force.
2. ship model coupling force measuring device according to claim 1, it is characterised in that：Comprising three dynamometry pillars,
Three unidirectional force ergometers, a force plate/platforms；Three dynamometry pillars and the force plate/platform（1）It is fixedly connected；Unidirectionally
Power ergometer（5）Installed in dynamometry pillar（2）On, and and ship model（8）Front portion is fixedly connected, unidirectional force ergometer（5）Only measure
Horizontal force at this；Unidirectional force ergometer（6）Installed in dynamometry pillar（3）On, and and ship model（8）Middle part is fixedly connected,
Unidirectional force ergometer（6）Longitudinal force at this is measured only；Unidirectional force ergometer（7）Installed in dynamometry pillar（4）On, and with
Ship model（8）Rear portion is fixedly connected, unidirectional force ergometer（7）Horizontal force at this is measured only.
3. ship model coupling force measuring device according to claim 2, it is characterised in that：Unidirectional force ergometer（5）Position
In ship model（8）The region of anterior disembarkation mould head end 0%～40%, unidirectional force ergometer（6）Positioned at ship model（8）Middle part disembarkation mould head end
40%～60% region, unidirectional force ergometer（7）Positioned at ship model（8）The region of rear portion disembarkation mould head end 60%～100%.
4. ship model coupling force measuring method, it is characterised in that：Using trailer traction ship model in water exercise, at least three are utilized
Individual unidirectional force ergometer measures traction power of the trailer to ship model, and wherein at least includes two horizontal forces and a longitudinal direction acts on
Power, the position according to measured power and its on ship model, through the composite calulation of power, obtains ship model real-time in motor process
Longitudinal force, cross force and turn first torque.
5. ship model coupling force measuring method according to claim 4, it is characterised in that comprise the following steps：
A, by three unidirectional force ergometers respectively with ship model（8）It is fixedly connected, and three unidirectional force ergometers is led to respectively
Cross dynamometry pillar and force plate/platform（1）It is fixedly connected；Unidirectional force ergometer（5）Installed in dynamometry pillar（2）On, and and ship model
（8）Front portion is fixedly connected, unidirectional force ergometer（5）Installation site and ship model center of gravity（10）Fore-and-aft distance be L1, only measurement should
The horizontal force F at place1, the starboard of ship model is pointed to for just in the direction of power；Unidirectional force ergometer（6）Installed in dynamometry pillar（3）
On, and and ship model（8）Middle part is fixedly connected, unidirectional force ergometer（6）Installation site and ship model center of gravity（10）Fore-and-aft distance be
L2, only measure the longitudinal force F at this2, the stem of ship model is pointed to for just in the direction of power；Unidirectional force ergometer（7）Installed in survey
Power pillar（4）On, and and ship model（8）Rear portion is fixedly connected, unidirectional force ergometer（7）Installation site and ship model center of gravity（10）It is vertical
It is L to distance3, only measure the horizontal force F at this3, the starboard of ship model is pointed to for just in the direction of power；
B, by force plate/platform（1）With trailer（9）It is fixedly connected；
C, make trailer（9）Moved with certain speed, described unidirectional force ergometer（5）, unidirectional force ergometer（7）Measure respectively each
Horizontal force F from position1、F3, described unidirectional force ergometer（6）Measure the longitudinal force F at its position2；
D, calculating ship model real-time longitudinal force, cross force and turn first torque in motor process；Longitudinal force X=F2, cross force Y=
F1+ F3, first torque M=F in corresponding turn of ship model center of gravity1×L1- F3×L3。
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Cited By (4)
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| CN109443695A (en) * | 2019-01-07 | 2019-03-08 | 河海大学 | A kind of ship model stress and displacement measuring device |
| CN109799064A (en) * | 2018-12-06 | 2019-05-24 | 中国船舶工业集团公司第七〇八研究所 | A kind of ship's manoeuverability hydrodynamic(al) force test device and method |
| CN113401305A (en) * | 2021-07-20 | 2021-09-17 | 华中科技大学 | Device and method for measuring hydrostatic property of ship model |
| CN113788123A (en) * | 2021-08-18 | 2021-12-14 | 华中科技大学 | Device and method for detecting hydrostatic performance of ship model in any floating state |
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| CN113401305B (en) * | 2021-07-20 | 2022-05-20 | 华中科技大学 | Device and method for measuring hydrostatic property of ship model |
| CN113788123A (en) * | 2021-08-18 | 2021-12-14 | 华中科技大学 | Device and method for detecting hydrostatic performance of ship model in any floating state |
| CN113788123B (en) * | 2021-08-18 | 2022-07-05 | 华中科技大学 | Device and method for detecting hydrostatic performance of ship model in any floating state |
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Application publication date: 20170419 |