CN104915526B - A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation - Google Patents
A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation Download PDFInfo
- Publication number
- CN104915526B CN104915526B CN201510394555.3A CN201510394555A CN104915526B CN 104915526 B CN104915526 B CN 104915526B CN 201510394555 A CN201510394555 A CN 201510394555A CN 104915526 B CN104915526 B CN 104915526B
- Authority
- CN
- China
- Prior art keywords
- analysis
- model
- bridge
- result
- parametric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation, including：Model is simplified, selecting unit type and coordinate system；Create parameterized model；Boundary condition is parameterized；Intensive analysis and model analysis are parameterized, the result process of checking is parameterized；Stress test and vibration-testing are instructed according to intensive analysis and modal analysis result, and respectively compares and analyzes intensive analysis result and modal analysis result and stress test result；Establish bridge-type grab ship unloader parametric simulation analysis system.The present invention closely surrounds the actual needs of bridge-type grab ship unloader security evaluation, it is combined together using the parametric technology of VB developing instruments and ANSYS, and modeling, boundary condition, analytic process and result checked etc. using parametric technology and realizes and parameterizes, a set of bridge-type grab ship unloader parametric simulation analysis system is developed, so that simulation analysis is had the characteristics that quick, accurate, highly practical.
Description
Technical field
The present invention relates to a kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation.
Background technology
Crane is the important infrastructure of the development of the national economy, and relationship is extremely close sets with people's life
It applies, wherein ship unloaders are even more to play very important effect.The main function of ship unloaders metal structure is subject to ship unloaders certainly
Weight and external applied load, and necessary work system and space are constituted, to complete the various functions of ship unloaders, so metal structure
Safety seem most important.Main reclaimer device of the bridge-type grab ship unloader as bulk cargo terminals, security performance it is good
It is bad be directly related to harbour whether can normal operation just will produce chain reaction once bridge-type grab ship unloader breaks down,
Cause entire berth cargo handling system impaired, causes huge economic loss.In order to carry out science, effective pipe to equipment
Reason, ensures its safe handling, and carrying out safety evaluation to its metal structure after crane is using certain time limit has important meaning
Justice.TSG Q7015-2008《Hoisting machinery periodic inspection rule》14th article of regulation is " for using more than 15 years or more, in tight
The high large scale hoisting machinery of heavy corrosion environment (such as seashore, humid area) or high wind region, frequency of use, should be according to tool
Body situation targetedly increases other measuring means, when necessary according to the practical safe condition of large scale hoisting machinery and use unit
Safety management level ability carries out security evaluation." bridge-type grab ship unloader uses by the sea mostly, use environment is severe, air
Moist and soot density is high, is easy to happen corrosion, and ship unloaders working level is high, factors above, which integrates, easily to be caused to unload
Safety accident occurs for machine.So in recent years, with the raising of economic fast development and society awareness of safety, to lifting
The safe operation of machine proposes increasingly higher demands, and more and more cranes need to carry out security evaluation.
When carrying out security evaluation to ship unloaders, there are the similar ship unloaders of a large amount of structures, different only some sizes
Parameter will certainly take considerable time in this way if carrying out modeling analysis from the beginning respectively to each ship unloaders to be assessed,
Human cost is substantially increased, the time for providing assessment report using unit to ship unloaders is extended.To overcome above-mentioned repetition to build
The problem of mould is brought with analysis introduces the finite element modeling thought of parametrization, makes limited in finite element modeling and analytic process
Meta Model realizes parametrization with analysis, to improve the efficiency of finite element analysis.This patent is related to achievement will be to crane safety
Assessment technology generates impetus, improves security evaluation working efficiency, this will be that crane safe operation escorts, promotes warp
The fast and stable that helps develops.
Invention content
Pacify in bridge-type grab ship unloader in order to solve the above technical problems, the object of the present invention is to provide a kind of parametric simulations
Application process in full assessment, this approach includes the following steps：
A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation, this method include：
A simplifies model, selecting unit type and coordinate system；
B creates parameterized model；
C parameterizes boundary condition；
D parameterizes intensive analysis and model analysis,
E parameterizes the result process of checking；
F instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and by intensive analysis result and
Modal analysis result is compared and analyzed with stress test result and Results of Vibration respectively；
G establishes bridge-type grab ship unloader parametric simulation analysis system.
Compared with prior art, one or more embodiments of the invention can have the following advantages that：
The present invention closely surrounds the actual needs of bridge-type grab ship unloader security evaluation, utilizes VB developing instruments and ANSYS
Parametric technology be combined together, and modeling, boundary condition, analytic process and result are checked etc. using parametric technology
Realize parametrization, develop a set of bridge-type grab ship unloader parametric simulation analysis system, make simulation analysis have quickly, it is accurate,
The features such as highly practical.
Description of the drawings
Fig. 1 is application process implementation flow chart of the parametric simulation in bridge-type grab ship unloader security evaluation；
Fig. 2 is ship unloaders constraint schematic diagram；
Fig. 3 is simulation analysis system architecture logic figure.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and attached drawing to this hair
It is bright to be described in further detail.
A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation, this method include：
Step 10 simplifies model, selecting unit type and coordinate system；
Step 20 creates parameterized model；
Step 30 parameterizes boundary condition；
Step 40 parameterizes intensive analysis and model analysis；
Step 50 parameterizes the result process of checking；
Step 60 instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and by intensive analysis knot
Fruit and modal analysis result are compared and analyzed with the test result；
Step 70 establishes bridge-type grab ship unloader parametric simulation analysis system.
Above-mentioned steps 10 specifically include：When simplifying to model, omission does not have influential structure to structural-load-carrying capacity,
Such as ladder rail system, ignore the shape of big quality part, and substituted in the form of quality point, omits the steel wire of hoisting system
Rope is substituted in the form of power.According to the design feature of ship unloaders and the element characteristics selecting unit type of ANSYS, the list of selection
Member is：1. for example front and back crossbeam of agent structure, column etc. use Beam189 units；2. front tension bar, back stay etc. use Link180
Unit；3. the big quality part omitted such as engine house, hoisting drum, electrical equipment use Mass21 units.In selection coordinate system
When need to make full use of the symmetry of ship unloaders structure, unified coordinate system be rectangular coordinate system, X forward directions are rear crossbeam direction, and Y is positive
For direction straight up, coordinate origin is then chosen at the midpoint of extra large side bottom end rail.
Above-mentioned steps 20 specifically include：When creating parameterized model, Parametric geometric model is created first, then creates ginseng
Numberization finite element model.When creating geometrical model, the key point and direction key point needed for geometrical model are created first, respectively
The coordinate value of key point need to realize parametrization, each key point then be connected into line, and specify the number of every line.Join creating
When numberization finite element model, section attribute is first created, the numerical value in the attribute of section need to all realize parametrization.Each component of ship unloaders
Cross sectional shape have nothing in common with each other, the cross sectional shape of such as extra large heel post is box, and the cross sectional shape of hound is pipe, horizontal in extra large side
The cross sectional shape of beam is I-shaped, and the section of crossbeam is then irregular shape.Wherein box, pipe, i shaped cross section exist
There is corresponding cross-sectional shape in the unit cross-section library of ANSYS, corresponding cross section geometric parameter need to be only inputted when creating section attribute
, and the irregular shape section of crossbeam then needs to input corresponding section mechanics parameter when creating section attribute.
Above-mentioned steps 30 specifically include：Parametrization to boundary condition includes the parametrization of constraint, coupling and load, Fig. 2
Schematic diagram is constrained for ship unloaders, 4 points of ship unloaders cart and rail contact are reduced to A, B, C, D at 4 points, and the directions A-B are crossbeam
Direction is in a model X forward directions, and the directions C-B are orbital direction, is in a model Z forward directions, Y forward directions are straight up.X、Y、Z
The displacement freedom in direction is denoted as U respectivelyx、Uy、Uz, the rotary freedom around X, Y, Z-direction is denoted as R respectivelyx、Ry、Rz.Due to rail
The effect of contraction in road, the U of all the pointsxConstrain；A, B points UzIt constrains, C, D point UzDischarge；In addition the U of all the pointsyAbout
Beam, and discharge Rx、Ry、Rz.These constraintss APDL parameterizes sentence description, you can constraint is made to realize parametrization.Front and back drawing
Bar is realized with the hinge of crossbeam and ladder frame by coupling technique.The Rz of all hinges point discharges, other 5 degree of freedom are equal
Coupling.These coupling conditions APDL is parameterized into sentence description, you can coupling is made to realize parametrization.Since unloading machine operation is multiple
Miscellaneous, operating mode is more, so needs consider various calculating operating modes according to actual conditions when carrying out simulation analysis.In order to realize multiplexing
The parametrization that working condition loading applies need to use the step load of full working scope multi-load, the specific steps are：In corresponding node apply load →
All load step files of load → calculating that load → cycle that load step file → deletion applies applies next operating mode are stored as,
Finally obtain the result of calculation of each load step.
In above-mentioned steps 40：The process of intensive analysis and model analysis is parameterized, including selection analysis type, is set
Set analysis option etc..
In above-mentioned steps 50 by the result process of checking carry out parametrization include to Stress Map, maximum stress, maximum displacement,
Eigenfrequncies and vibration models figure realizes that result checks parametrization.
Above-mentioned steps 60 specifically include：According to intensive analysis as a result, instruct the formulation of stress test scheme, obtain simultaneously
Weight stress can not measure the deficiency of weight stress, finally by intensive analysis result and stress test knot to make up stress test
Fruit compares and analyzes.The natural frequency of vibration and the corresponding vibration shape obtained according to model analysis, instructs the formulation of vibration-testing scheme,
Finally modal analysis result and Results of Vibration are compared and analyzed, reference is provided to prevent mesomerism.
Above-mentioned steps 70 specifically include：The parametric technology of ANSYS is combined together using VB developing instruments, exploitation one
Cover bridge-type grab ship unloader parametric simulation analysis system.Fig. 3 is simulation analysis system architecture logic figure, and left side is VB in Fig. 3
Part, right side are the parts ANSYS.System completes parameter input first, then generates APDL files, while starting on backstage
ANSYS, then ANSYS calling APDL completions calculate and export result of calculation, finally show result of calculation in analogue system.
Although disclosed herein embodiment it is as above, the content is only to facilitate understanding the present invention and adopting
Embodiment is not limited to the present invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (3)
1. a kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation, which is characterized in that the method
Include the following steps：
A simplifies model, selecting unit type and coordinate system；
B creates parameterized model；
C parameterizes boundary condition；
D parameterizes intensive analysis and model analysis,
E parameterizes the result process of checking；
F instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and by intensive analysis result and mode
Analysis result is compared and analyzed with stress test result and Results of Vibration respectively；
G establishes bridge-type grab ship unloader parametric simulation analysis system；
In the step A：
Model simplification is to omit not having influential structure to structural bearing capacity；
The selection of cell type is the element characteristics of the design feature and ANSYS according to ship unloaders；The unit selected for：Main body knot
For example front and back crossbeam of structure, column use Beam189 units；Front tension bar, back stay use Link180 units；The big Quality Mgmt Dept omitted
Part such as engine house, hoisting drum, electrical equipment use Mass21 units；
The selection of coordinate system is according to the symmetry of unloading mechanism, and unified coordinate system is rectangular coordinate system, and X forward directions are rear crossbeam side
To Y forward directions are direction straight up, and coordinate origin is then chosen at the midpoint of extra large side bottom end rail；
Boundary condition parametrization includes in the step C：The parametrization of constraint, coupling and load；
4 points of ship unloaders cart and rail contact are reduced to A, B, C, D at 4 points, and the directions A-B are crossbeam direction, are in a model X
Forward direction, the directions C-B are orbital direction, are in a model Z forward directions, Y forward directions are straight up；X, Y, Z-direction displacement freedom
It is denoted as U respectivelyx、Uy、Uz, the rotary freedom around X, Y, Z-direction is denoted as R respectivelyx、Ry、Rz；Due to the effect of contraction of track, institute
U a littlexConstrain；A, B points UzIt constrains, C, D point UzDischarge；In addition the U of all the pointsyIt constrains, and discharges Rx、Ry、Rz；
These constraintss APDL parameterizes sentence description, you can constraint is made to realize parametrization；Front and back pull rod and crossbeam and ladder frame
Hinge realized by coupling technique；The Rz of all hinges point discharges, other five degree of freedom couple；These are coupled
Condition APDL parameterizes sentence description, you can coupling is made to realize parametrization；
In the step E result check the parametrization of process include Stress Map, maximum stress, maximum displacement, intrinsic frequency and
Bending vibation mode picture realizes that result checks parametrization.
2. application process of the parametric simulation as described in claim 1 in bridge-type grab ship unloader security evaluation, feature
It is, parameterized model includes Parametric geometric model and parameter finite element model in the step B.
3. application process of the parametric simulation as described in claim 1 in bridge-type grab ship unloader security evaluation, feature
It is, in the step D：It includes selection analysis type and setting analysis choosing to carry out parametrization to intensive analysis and model analysis
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394555.3A CN104915526B (en) | 2015-07-06 | 2015-07-06 | A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394555.3A CN104915526B (en) | 2015-07-06 | 2015-07-06 | A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104915526A CN104915526A (en) | 2015-09-16 |
| CN104915526B true CN104915526B (en) | 2018-08-24 |
Family
ID=54084589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510394555.3A Expired - Fee Related CN104915526B (en) | 2015-07-06 | 2015-07-06 | A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104915526B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873859B (en) * | 2018-05-31 | 2020-07-31 | 浙江工业大学 | Bridge type grab ship unloader fault prediction model method based on improved association rule |
| CN110414068A (en) * | 2019-07-02 | 2019-11-05 | 北京化工大学 | A method of using finite element analysis software C-shaped tunneltron intensity and stability |
| CN112363993A (en) * | 2020-10-27 | 2021-02-12 | 上汽通用五菱汽车股份有限公司 | Method, device, system and storage medium for modeling by using parameterized database |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106307A (en) * | 2013-02-02 | 2013-05-15 | 深圳市大族激光科技股份有限公司 | Transverse beam design method of laser cutting machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9031822B2 (en) * | 2012-06-15 | 2015-05-12 | Chevron U.S.A. Inc. | System and method for use in simulating a subterranean reservoir |
-
2015
- 2015-07-06 CN CN201510394555.3A patent/CN104915526B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106307A (en) * | 2013-02-02 | 2013-05-15 | 深圳市大族激光科技股份有限公司 | Transverse beam design method of laser cutting machine |
Non-Patent Citations (1)
| Title |
|---|
| "参数化仿真在桥式抓斗卸船机安全评估中的应用";刘金等;《自动化与信息工程》;20150430;第36卷(第2期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104915526A (en) | 2015-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110263461B (en) | Bridge safety monitoring and early warning system based on BIM | |
| CN104915526B (en) | A kind of application process of parametric simulation in bridge-type grab ship unloader security evaluation | |
| CN102777043B (en) | Construction method for lifting arch structure in zero-deformation state | |
| CN114218661B (en) | Fatigue crack propagation-based fatigue life prediction method | |
| CN106644499A (en) | Method and system for testing strength of power assembly of electric automobile | |
| CN102261988A (en) | Method for testing residual life of crane | |
| Kulka et al. | Failure analysis of the foundry crane to increase its working parameters | |
| CN106874558A (en) | A kind of computational methods of the blower fan mainframe hanger ultimate factor of safety | |
| KR101603441B1 (en) | method for auto calculating for examination of block lifting safety | |
| Li et al. | Reliability-based design optimization for the lattice boom of crawler crane | |
| Gąska et al. | Strength and elastic stability of cranes in aspect of new and old design standards | |
| Manco et al. | Experimental and numerical study of uniaxially compressed stiffened plates with different plating thickness | |
| Wang et al. | Ultimate strength envelope of a 10,000 TEU large container ship subjected to combined loads: From compartment model to global hull girder | |
| Urbaś et al. | Dynamics analysis of a crane with consideration of a load geometry and a rope sling system | |
| Tong et al. | Structural stability analysis for truss bridge | |
| CN103366094A (en) | Method for determining composite structure strength based on force load and force boundary conditions | |
| CN111353191A (en) | Construction method of roof steel structure with multi-curvature special-shaped curved surface | |
| CN114492109A (en) | Simulation modeling based lifting carrying pole reinforcement method and lifting carrying pole | |
| KR102214273B1 (en) | An evaluation system for floating crane | |
| Attia et al. | Numerical simulation of intact and cracked aluminum-alloy stiffened panels: Calibration based on experiment | |
| CN117807717B (en) | Cab model generation method and system, electronic equipment and storage medium | |
| CN105354420A (en) | Curved-surface tension generating method and apparatus based on B-spline curve | |
| CN102700556B (en) | Hydraulic cylinder lifting system control method and tramcar employing same | |
| Zeng et al. | Reliability Assessment of Fatigue Life of Hangers in Large-Span Suspension Bridges | |
| Chengyin et al. | Multihazard risk assessment of sea-crossing suspension bridges based on an improved Bayesian network method. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20210706 |