CN109406027A - A kind of dockage Maintenance Assistant Decision-making method - Google Patents
A kind of dockage Maintenance Assistant Decision-making method Download PDFInfo
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- CN109406027A CN109406027A CN201811235987.XA CN201811235987A CN109406027A CN 109406027 A CN109406027 A CN 109406027A CN 201811235987 A CN201811235987 A CN 201811235987A CN 109406027 A CN109406027 A CN 109406027A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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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
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Abstract
The present invention provides a kind of dockage Maintenance Assistant Decision-making method, each local strength's stress monitoring point stress value of object ship, each longitudinal strength stress monitoring point stress value are obtained by FEM calculation, and benchmark is judged as stress, after ship sits depressed place, the stress monitoring point sensor real-time monitoring of hull；When longitudinal strength stress monitoring point stress value is much larger than the total longitudinal stress benchmark σ in monitoring pointg, and all local strength's stress monitoring point stress values are respectively less than each monitoring point local stress benchmark σLWhen, adjust overall longitudinal strength of hull；Conversely, adjustment hull local strength.The present invention reduces the risk of dockage maintenance, pass through real-time monitoring Ship Structure stress, and configuration state is assessed according to obtained monitoring data, alarm is issued when structural stress is larger, and provide alternative Maintenance Assistant Decision-making suggestion that lies up to behaviour ship personnel, then the security risk of structure can be effectively reduced.
Description
Technical field
The invention belongs to vessel structure safety fields, and in particular to a kind of dockage Maintenance Assistant Decision-making method.
Background technique
In recent years, China's shipbuilding industry develops rapidly, and the requirement to hull mass is also higher and higher, and the safety of structure is
Guarantee the basis normally operated of ship, dock repair is the important link repaired ship equipment, restore its service performance, but ship
Many uncertain factors can be will appear in the maintenance process that lies up, reduce the safety of ship, such as: hull is shelved onBlockOn
When, it may occur that block is not firm, and hull does not lie down on block equably, and hull lay-down location has hanging phenomenon etc. to ask
Topic, in order to reduce the risk of dockage maintenance, by real-time monitoring Ship Structure stress, and according to obtained monitoring data pair
Configuration state is assessed, and alarm is issued when structural stress is larger, and provide alternative maintenance that lies up to behaviour ship personnel
The security risk of structure then can be effectively reduced in aid decision suggestion.
It was now obtained in the past based on analysis of finite element method when dockage is repaired there is no specific aid decision-making method
Each local strength's stress monitoring point stress value of object ship and each longitudinal strength stress monitoring point stress value, using these numerical value as answering
Power judges benchmark, and the tightness for the part that is connected changing floor with block or by way of increasing reduction block quantity
So that longitudinal strength stress monitoring point is measured stress value less than total longitudinal stress benchmark, local strength's stress is made by mobile block position
Monitoring point measures stress value less than local stress benchmark, meets the requirements intensity.
Summary of the invention
The object of the present invention is to provide a kind of dockage Maintenance Assistant Decision-making methods, meet security of shipping need
It asks, the object of the present invention is achieved like this:
A kind of dockage Maintenance Assistant Decision-making method, steps are as follows for concrete implementation:
Rigidity, the size of the case where step 1. known target ship block arrangement and block, obtain mesh by FEM calculation
Biao Chuange local strength stress monitoring point stress value, each longitudinal strength stress monitoring point stress value, and benchmark is judged as stress,
Local stress benchmark is denoted as σL, total longitudinal stress benchmark is denoted as σg, record each total longitudinal stress benchmark, each local stress benchmark and each
The corresponding stress monitoring point measuring point number of stress benchmark, establishes database；
After step 2. ship sits depressed place, the stress monitoring point sensor real-time monitoring of hull goes out each longitudinal strength stress monitoring
Point stress value, each local strength's stress monitoring point stress value；
Step 3. is much larger than the total longitudinal stress benchmark σ in monitoring point when longitudinal strength stress monitoring point stress valueg, and all offices
Portion strength stress monitoring point stress value is respectively less than each monitoring point local stress benchmark σLWhen, overall longitudinal strength of hull is adjusted, output is not
Meet the measuring point number of the longitudinal strength stress monitoring point of longitudinal strength；
Step 4. is much larger than each monitoring point local stress benchmark σ when local strength stress monitoring point stress valueL, and own
Longitudinal strength stress monitoring point stress value is respectively less than the total longitudinal stress benchmark σ in each monitoring pointgWhen, adjust hull local strength, output
It is unsatisfactory for local stress benchmark σLThe measuring point of local strength's stress monitoring point is numbered；
Part longitudinal strength stress monitoring point stress value is much larger than total longitudinal stress benchmark σ to step 5. if it existsg, and there are portions
Portion, branch office strength stress monitoring point stress value is much larger than local stress benchmark σL, then longitudinal strength and local strength are discontented at this time
Sufficient condition exports the measuring point number of stress monitoring point exceeded at this time, is successively adjusted according to step 3, step 4, Zhi Daosuo
There is longitudinal strength stress monitoring point stress value to meet the total longitudinal stress benchmark σ in each monitoring pointgAnd all local strength's stress monitoring points
Stress value meets each monitoring point local stress benchmark σL, it is considered as full ship and meets intensity requirement.
Total longitudinal stress monitoring point described in step 1 is arranged on the hurricane deck of midship plane, local stress monitoring
Point is arranged in be connected on bottom longitudinal with block.
The specific steps of adjustment overall longitudinal strength of hull described in step 3 are as follows:
If the total longitudinal stress benchmark σ of step 3.1.gFor tensile stress, ship is hogging condition at this time, makes the part being arranged in ship
Contact between block and floor should not it is excessively close, reduce the part block of arrangement amidships position, or ship will be arranged in
The part block and floor of body head and the tail are in close contact, increase the block of hull initial and tail sections；
If the total longitudinal stress benchmark σ of step 3.2.gFor compression, ship is sagging condition at this time, and arrangement is made amidships to divide pier
Wood is in close contact with floor, increases the block for arranging amidships position, or makes the part block for being arranged in hull head and the tail and ship
Contacts baseplate should not block that is excessively close, reducing hull initial and tail sections；
Step 3.3. is respectively less than corresponding total longitudinal stress benchmark σ when all longitudinal strength stress monitoring point stressgWhen, then always
Longitudinal strength condition meets.
The detailed process of hull local strength described in step 4 is, to being unsatisfactory for local stress benchmark σLPart it is strong
The block of degree stress monitoring point position is moved, and is moved with the distance of each rib position to ship is vertical or horizontal, every time
FEM calculation is carried out to hull before movement, and the primary local stress at this time of monitoring after movement, until all local strengths
Stress monitoring point stress is respectively less than corresponding local stress benchmark σL, then local strength's condition meets.
The beneficial effects of the present invention are: the risk of dockage maintenance is reduced, by real-time monitoring Ship Structure stress,
And configuration state is assessed according to obtained monitoring data, alarm is issued when structural stress is larger, and give behaviour ship personnel
Alternative Maintenance Assistant Decision-making suggestion that lies up is provided, then the security risk of structure can be effectively reduced.
Detailed description of the invention
Fig. 1 is total process flow diagram flow chart of the invention.
Fig. 2 is the total longitudinal stress monitoring point A-11-4 of monitoring object working ship.
Fig. 3 is monitoring object working ship local stress monitoring point A-1-2.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
Embodiment 1
A kind of dockage Maintenance Assistant Decision-making method, steps are as follows for concrete implementation:
Rigidity, the size of the case where step 1. known target ship block arrangement and block, obtain mesh by FEM calculation
Biao Chuange local strength stress monitoring point stress value, each longitudinal strength stress monitoring point stress value, and benchmark is judged as stress,
Local stress benchmark is denoted as σL, total longitudinal stress benchmark is denoted as σg, record each total longitudinal stress benchmark, each local stress benchmark and each
The corresponding stress monitoring point measuring point number of stress benchmark, establishes database；
After step 2. ship sits depressed place, the stress monitoring point sensor real-time monitoring of hull goes out each longitudinal strength stress monitoring
Point stress value, each local strength's stress monitoring point stress value；
Step 3. is much larger than the total longitudinal stress benchmark σ in monitoring point when longitudinal strength stress monitoring point stress valueg, and all offices
Portion strength stress monitoring point stress value is respectively less than each monitoring point local stress benchmark σLWhen, overall longitudinal strength of hull is adjusted, output is not
Meet the measuring point number of the longitudinal strength stress monitoring point of longitudinal strength；
Step 4. is much larger than each monitoring point local stress benchmark σ when local strength stress monitoring point stress valueL, and own
Longitudinal strength stress monitoring point stress value is respectively less than the total longitudinal stress benchmark σ in each monitoring pointgWhen, adjust hull local strength, output
It is unsatisfactory for local stress benchmark σLThe measuring point of local strength's stress monitoring point is numbered；
Part longitudinal strength stress monitoring point stress value is much larger than total longitudinal stress benchmark σ to step 5. if it existsg, and there are portions
Portion, branch office strength stress monitoring point stress value is much larger than local stress benchmark σL, then longitudinal strength and local strength are discontented at this time
Sufficient condition exports the measuring point number of stress monitoring point exceeded at this time, is successively adjusted according to step 3, step 4, Zhi Daosuo
There is longitudinal strength stress monitoring point stress value to meet the total longitudinal stress benchmark σ in each monitoring pointgAnd all local strength's stress monitoring points
Stress value meets each monitoring point local stress benchmark σL, it is considered as full ship and meets intensity requirement.
Total longitudinal stress monitoring point described in step 1 is arranged on the hurricane deck of midship plane, local stress monitoring
Point is arranged in be connected on bottom longitudinal with block.
The specific steps of adjustment overall longitudinal strength of hull described in step 3 are as follows:
If the total longitudinal stress benchmark σ of step 3.1.gFor tensile stress, ship is hogging condition at this time, makes the part being arranged in ship
Contact between block and floor should not it is excessively close, reduce the part block of arrangement amidships position, or ship will be arranged in
The part block and floor of body head and the tail are in close contact, increase the block of hull initial and tail sections；
If the total longitudinal stress benchmark σ of step 3.2.gFor compression, ship is sagging condition at this time, and arrangement is made amidships to divide pier
Wood is in close contact with floor, increases the block for arranging amidships position, or makes the part block for being arranged in hull head and the tail and ship
Contacts baseplate should not block that is excessively close, reducing hull initial and tail sections；
Step 3.3. is respectively less than corresponding total longitudinal stress benchmark σ when all longitudinal strength stress monitoring point stressgWhen, then always
Longitudinal strength condition meets.
The detailed process of hull local strength described in step 4 is, to being unsatisfactory for local stress benchmark σLPart it is strong
The block of degree stress monitoring point position is moved, and is moved with the distance of each rib position to ship is vertical or horizontal, every time
FEM calculation is carried out to hull before movement, and the primary local stress at this time of monitoring after movement, until all local strengths
Stress monitoring point stress is respectively less than corresponding local stress benchmark σL, then local strength's condition meets.
The present invention will be further described with example with reference to the accompanying drawing.
Monitoring object: certain working ship；
Principal dimensions: overall length: 122.5m；Type is wide: 22.32m；Moldeed depth: 11.80m；Designed draft: 7.85m；
With local strength measuring point A-1-2 (position is as shown in table 1 and Fig. 3), longitudinal strength measuring point A-11-4 (position such as table 2
And shown in Fig. 2) two monitoring points alarm for:
The local stress benchmark σ of 1 local strength stress monitoring point A-1-2 of tableL
Total longitudinal stress benchmark σ of 2 longitudinal strength stress monitoring point A-11-4 of tableg
Specific steps are as follows:
Step 1. is certain working ship block arrangement the case where and the rigidity of known block, size are obtained by FEM calculation
To each local strength's stress monitoring point stress value of object ship and each longitudinal strength stress monitoring point stress value, using these numerical value as
Following steps stress judges that benchmark, local stress benchmark are denoted as σL, total longitudinal stress benchmark is denoted as σg, by each total longitudinal stress benchmark and
Each local stress benchmark and the corresponding stress monitoring point measuring point number of each stress benchmark are write down, and database is established；
After step 2. ship sits depressed place, ship upper stress monitoring point sensor real-time monitoring goes out longitudinal strength stress monitoring point A-
11-4 stress value is 50.5MPa and local strength's stress monitoring point is A-1-2 stress value 67.5MPa, and two o'clock is exceeded, and ship is at this time
State is hogging.Local strength's stress monitoring point A-1-2 local stress benchmark σ is called from databaseL, such as table 1, longitudinal strength
The total longitudinal stress benchmark σ of stress monitoring point A-11-4g, such as table 2；
At this point, both there is longitudinal strength stress monitoring point stress value much larger than total longitudinal stress benchmark σ in step 3.g, and exist
Local strength's stress monitoring point stress value is much larger than local stress benchmark σL, then longitudinal strength is not satisfied with local strength at this time
Condition exports the measuring point number A-1-2 of local strength's stress monitoring point exceeded at this time, the measuring point of longitudinal strength stress monitoring point
Number A-11-4, the exceeded situation in longitudinal stress monitoring point total first carry out the adjustment of block, and ship is hogging condition at this time, then causes this
The reason of state is to be arranged between midship block and floor to contact too closely or arrange that amidships position block is more
Intensively, it is more loose that no full contact or bow tail portion block arrangement are arranged between bow tail portion block and floor, is needed at this time
Make to be arranged in the part block in ship contacted with floor should not part block that is excessively close or reducing arrangement amidships position,
Hull first tail portion block will be arranged in and floor is in close contact or increases the block of hull initial and tail sections, this process terminates
Afterwards, the stress value for measuring total longitudinal stress monitoring point of measuring point number A-11-4 in real time is 3.2MPa, in the item for meeting longitudinal strength
After part, local strength at this time is checked, by a FEM calculation, block moves a rib position to X-axis forward direction along captain direction
Afterwards, the new local stress benchmark of this monitoring point is 4.35MPa, measures the local stress monitoring that measuring point number is A-1-2 in real time
The stress value of point is 2.7MPa, and all longitudinal strength stress monitoring point stress values meet the total longitudinal stress benchmark σ in each monitoring point at this timeg
And all local strength's stress monitoring point stress values meet each monitoring point local stress benchmark σL, it is considered as full ship and meets intensity and wants
It asks.
Embodiment 2
The present invention relates to vessel structure safety fields.
In recent years, China's shipbuilding industry develops rapidly, and the requirement to hull mass is also higher and higher, and the safety of structure is
Guarantee the basis normally operated of ship, dock repair is the important link repaired ship equipment, restore its service performance, but ship
Many uncertain factors can be will appear in the maintenance process that lies up, reduce the safety of ship, such as: hull is shelved onBlockOn
When, it may occur that block is not firm, and hull does not lie down on block equably, and hull lay-down location has hanging phenomenon etc. to ask
Topic, in order to reduce the risk of dockage maintenance, by real-time monitoring Ship Structure stress, and according to obtained monitoring data pair
Configuration state is assessed, and alarm is issued when structural stress is larger, and provide alternative maintenance that lies up to behaviour ship personnel
The security risk of structure then can be effectively reduced in aid decision suggestion.
It was now obtained in the past based on analysis of finite element method when dockage is repaired there is no specific aid decision-making method
Each local strength's stress monitoring point stress value of object ship and each longitudinal strength stress monitoring point stress value, using these numerical value as answering
Power judges benchmark, and the tightness for the part that is connected changing floor with block or by way of increasing reduction block quantity
So that longitudinal strength stress monitoring point is measured stress value less than total longitudinal stress benchmark, local strength's stress is made by mobile block position
Monitoring point measures stress value less than local stress benchmark, meets the requirements intensity.
Security of shipping need to meet longitudinal strength and local strength and require, hull lie up Maintenance Assistant Decision-making when need to be from total vertical
Intensity and exceeded two aspect of local strength stress account for.Ship stress monitoring point is divided into total longitudinal stress monitoring point and part and answers
Power monitoring point, total longitudinal stress monitoring point are arranged on the hurricane deck of midship plane, and local stress monitoring point is arranged in and pier
On the connected bottom longitudinal of wood.
1. the known target ship block arrangement the case where and the rigidity of known block, size are obtained by FEM calculation
Each local strength's stress monitoring point stress value of object ship and each longitudinal strength stress monitoring point stress value, using these numerical value as with
Lower step stress judges that benchmark, local stress benchmark are denoted as [σL], total longitudinal stress benchmark is denoted as [σg], by each total longitudinal stress benchmark
And each local stress benchmark and the corresponding stress monitoring point measuring point number of each stress benchmark are write down, and database is established.
2. after ship sits depressed place, ship upper stress monitoring point sensor meeting real-time monitoring goes out each longitudinal strength stress monitoring point and answers
Force value and each local strength's stress monitoring point stress value.
3. longitudinal strength stress monitoring point stress value is much larger than the total longitudinal stress benchmark [σ in monitoring point if it existsg], all parts
Strength stress monitoring point stress value is respectively less than each monitoring point local stress benchmark [σL], then it need to only consider overall longitudinal strength of hull, it is defeated
It is unsatisfactory for the measuring point number of the longitudinal strength stress monitoring point of longitudinal strength out.Hull state at this time is focused first on, if total indulge is answered
Power benchmark [σg] it is tensile stress, ship is hogging condition at this time, then is arranged between the block and floor in ship and contacts excessively tightly
Amidships position block is more intensive for close or arrangement, is arranged between the block and floor of bow tail no full contact or bow tail
Block arrangement it is more loose, needing to make to be arranged in the part block in ship to contact with floor at this time should not be excessively close, or subtract
Few part block for arranging amidships position, the part block and floor that will be arranged in hull head and the tail are in close contact or increase ship
The block of body initial and tail sections；If total longitudinal stress benchmark [σg] it is compression, ship is sagging condition at this time, then the pier being arranged in ship
It does not completely attach to or arranges that amidships position block is more loose between wood and floor, be arranged in bow tail portion block and floor
Between contact too closely or bow tail portion block arrangement is more intensive, need that arrangement is made amidships to divide block tight with floor at this time
Contiguity touching increases the block for arranging amidships position, and contacting the part block for being arranged in hull head and the tail with floor should not mistake
Divide block that is close or reducing hull initial and tail sections.It is answered until all longitudinal strength stress monitoring point stress are respectively less than corresponding total indulge
Power benchmark [σg], then longitudinal strength condition meets.
4. local strength's stress monitoring point stress value is much larger than each monitoring point local stress benchmark [σ if it existsL], Suo Youzong
Longitudinal strength stress monitoring point stress value is respectively less than the total longitudinal stress benchmark [σ in each monitoring pointg], then it need to only consider local strength, export
It is unsatisfactory for local stress benchmark [σL] local strength's stress monitoring point measuring point number, for being unsatisfactory for local stress benchmark [σL]
The block of local strength's stress monitoring point position moved, primary new block arrangement mode is carried out before every movement once
Hull FEM calculation, a mobile block being unsatisfactory at the stress monitoring point of benchmark, each to increase or decrease every time
The distance of a rib position is moved to ship is vertical or horizontal, and primary part at this time is monitored after FEM calculation of every progress and is answered
Power, until all local strength's stress monitoring point stress are respectively less than corresponding local stress benchmark [σL], then local strength's condition
Meet.
5. part longitudinal strength stress monitoring point stress value is much larger than total longitudinal stress benchmark [σ if it existsg], and there are parts
Local strength's stress monitoring point stress value is much larger than local stress benchmark [σL], then longitudinal strength and local strength are discontented at this time
Sufficient condition exports the measuring point number of stress monitoring point exceeded at this time, referring to step 3, carries out pier to the exceeded situation of total longitudinal stress
The adjustment of wood, after meeting the condition of longitudinal strength, whether local strength meets at this time for judgement, the exceeded survey of local stress if it exists
Point then carries out step 4.Until all longitudinal strength stress monitoring point stress values meet the total longitudinal stress benchmark [σ in each monitoring pointg] and
All local strength's stress monitoring point stress values meet each monitoring point local stress benchmark [σL], then it is considered as full ship and meets intensity and wants
It asks.
The present invention will be further described with example with reference to the accompanying drawing.
Monitoring object: certain working ship
Principal dimensions: overall length: 122.5m；Type is wide: 22.32m；Moldeed depth: 11.80m；Designed draft: 7.85m
Fig. 1 is the total longitudinal stress monitoring point position A-11-4 of certain working ship in the following figure, and Fig. 2 is the monitoring of certain working ship local stress
The position point A-1-2.
With local strength measuring point A-1-2 (position is as shown in table 1 and Fig. 2), longitudinal strength measuring point A-11-4 (position such as table 2
And shown in Fig. 1) two monitoring points alarm for:
1. certain working ship block arrangement the case where and the rigidity of known block, size obtain mesh by FEM calculation
Biao Chuange local strength stress monitoring point stress value and each longitudinal strength stress monitoring point stress value, using these numerical value as following
Step stress judges that benchmark, local stress benchmark are denoted as [σL], total longitudinal stress benchmark is denoted as [σg], by each total longitudinal stress benchmark and
Each local stress benchmark and the corresponding stress monitoring point measuring point number of each stress benchmark are write down, and database is established.
2. after ship sits depressed place, ship upper stress monitoring point sensor real-time monitoring goes out longitudinal strength stress monitoring point A-11-4
Stress value is 50.5MPa and local strength's stress monitoring point is A-1-2 stress value 67.5MPa, and two o'clock is exceeded, and ship state at this time
For hogging.Local strength's stress monitoring point A-1-2 local stress benchmark [σ is called from databaseL] such as table 1, longitudinal strength is answered
The total longitudinal stress benchmark [σ of power monitoring point A-11-4g] such as table 2.
Local stress benchmark [the σ of 1 local strength stress monitoring point A-1-2 of tableL]
Total longitudinal stress benchmark [σ of 2 longitudinal strength stress monitoring point A-11-4 of tableg]
3. at this point, both there is longitudinal strength stress monitoring point stress value much larger than total longitudinal stress benchmark [σg], and there are offices
Portion's strength stress monitoring point stress value is much larger than local stress benchmark [σL], then longitudinal strength is not satisfied with local strength at this time
Condition exports the measuring point number A-1-2 of local strength's stress monitoring point exceeded at this time, the measuring point of longitudinal strength stress monitoring point
Number A-11-4, the exceeded situation in longitudinal stress monitoring point total first carry out the adjustment of block, and ship is hogging condition at this time, then causes this
The reason of state is to be arranged between midship block and floor to contact too closely or arrange that amidships position block is more
Intensively, it is more loose that no full contact or bow tail portion block arrangement are arranged between bow tail portion block and floor, is needed at this time
Make to be arranged in the part block in ship contacted with floor should not part block that is excessively close or reducing arrangement amidships position,
Hull first tail portion block will be arranged in and floor is in close contact or increases the block of hull initial and tail sections, this process terminates
Afterwards, the stress value for measuring total longitudinal stress monitoring point of measuring point number A-11-4 in real time is 3.2MPa, in the item for meeting longitudinal strength
After part, local strength at this time is checked, by a FEM calculation, block moves a rib position to X-axis forward direction along captain direction
Afterwards, the new local stress benchmark of this monitoring point is 4.35MPa, measures the local stress monitoring that measuring point number is A-1-2 in real time
The stress value of point is 2.7MPa, and all longitudinal strength stress monitoring point stress values meet the total longitudinal stress benchmark in each monitoring point at this time
[σg] and all local strength's stress monitoring point stress values meet each monitoring point local stress benchmark [σL], it is considered as full ship and meets by force
Degree requires.
Claims (4)
1. a kind of dockage Maintenance Assistant Decision-making method, which is characterized in that steps are as follows for concrete implementation:
Rigidity, the size of the case where step 1. known target ship block arrangement and block, obtain object ship by FEM calculation
Each local strength's stress monitoring point stress value, each longitudinal strength stress monitoring point stress value, and benchmark is judged as stress, part
Stress benchmark is denoted as σL, total longitudinal stress benchmark is denoted as σg, record each total longitudinal stress benchmark, each local stress benchmark and each stress
The corresponding stress monitoring point measuring point number of benchmark, establishes database；
After step 2. ship sits depressed place, the stress monitoring point sensor real-time monitoring of hull goes out each longitudinal strength stress monitoring point and answers
Force value, each local strength's stress monitoring point stress value；
Step 3. is much larger than the total longitudinal stress benchmark σ in monitoring point when longitudinal strength stress monitoring point stress valueg, and all parts are strong
Degree stress monitoring point stress value is respectively less than each monitoring point local stress benchmark σLWhen, overall longitudinal strength of hull is adjusted, output is unsatisfactory for
The measuring point of the longitudinal strength stress monitoring point of longitudinal strength is numbered；
Step 4. is much larger than each monitoring point local stress benchmark σ when local strength stress monitoring point stress valueL, and it is all total vertical
Strength stress monitoring point stress value is respectively less than the total longitudinal stress benchmark σ in each monitoring pointgWhen, hull local strength is adjusted, output is discontented
Sufficient local stress benchmark σLThe measuring point of local strength's stress monitoring point is numbered；
Part longitudinal strength stress monitoring point stress value is much larger than total longitudinal stress benchmark σ to step 5. if it existsg, and there are part offices
Portion's strength stress monitoring point stress value is much larger than local stress benchmark σL, then item is not satisfied in longitudinal strength and local strength at this time
Part exports the measuring point number of stress monitoring point exceeded at this time, is successively adjusted according to step 3, step 4, until all total
Longitudinal strength stress monitoring point stress value meets the total longitudinal stress benchmark σ in each monitoring pointgAnd all local strength's stress monitoring point stress
Value meets each monitoring point local stress benchmark σL, it is considered as full ship and meets intensity requirement.
2. a kind of dockage Maintenance Assistant Decision-making method according to claim 1, it is characterised in that: described in step 1
Total longitudinal stress monitoring point be arranged on the hurricane deck of midship plane, local stress monitoring point is arranged in the ship that is connected with block
It indulges on bone at bottom.
3. a kind of dockage Maintenance Assistant Decision-making method according to claim 1, which is characterized in that described in step 3
Adjustment overall longitudinal strength of hull specific steps are as follows:
If the total longitudinal stress benchmark σ of step 3.1.gFor tensile stress, ship is hogging condition at this time, make to be arranged in part block in ship with
Contact between floor should not it is excessively close, reduce the part block of arrangement amidships position, or hull head and the tail will be arranged in
Part block and floor be in close contact, increase hull initial and tail sections block；
If the total longitudinal stress benchmark σ of step 3.2.gFor compression, ship is sagging condition at this time, and arrangement is made amidships to divide block and ship
Bottom plate is in close contact, increases the block for arranging amidships position, or connects the part block for being arranged in hull head and the tail with floor
Touching should not block that is excessively close, reducing hull initial and tail sections；
Step 3.3. is respectively less than corresponding total longitudinal stress benchmark σ when all longitudinal strength stress monitoring point stressgWhen, then it is total vertical strong
Degree condition meets.
4. a kind of dockage Maintenance Assistant Decision-making method according to claim 1, which is characterized in that described in step 4
The detailed process of hull local strength be, to being unsatisfactory for local stress benchmark σLLocal strength's stress monitoring point position pier
Wood is moved, and is moved with the distance of each rib position to ship is vertical or horizontal, is had before movement to hull every time
Limit member calculates, and the primary local stress at this time of monitoring after movement, until all local strength's stress monitoring point stress are respectively less than
Corresponding local stress benchmark σL, then local strength's condition meets.
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| CN111718164A (en) * | 2020-06-22 | 2020-09-29 | 哈尔滨工程大学 | Non-freezing breakable synthetic model ice material and preparation method thereof |
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