CN104915526A - Application method of parametric simulation in safety assessment of bridge grab ship unloader - Google Patents
Application method of parametric simulation in safety assessment of bridge grab ship unloader Download PDFInfo
- Publication number
- CN104915526A CN104915526A CN201510394555.3A CN201510394555A CN104915526A CN 104915526 A CN104915526 A CN 104915526A CN 201510394555 A CN201510394555 A CN 201510394555A CN 104915526 A CN104915526 A CN 104915526A
- Authority
- CN
- China
- Prior art keywords
- analysis
- bridge
- ship unloader
- result
- safety assessment
- 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.)
- Granted
Links
Abstract
The invention discloses an application method of parametric simulation in safety assessment of a bridge grab ship unloader. The method comprises the following steps: simplifying a model, and selecting a unit type and a coordinate system; creating a parameterized model; parameterizing boundary conditions; parameterizing intensity analysis and modal analysis, and parameterizing a result viewing process; guiding a stress test and a vibration test according to the intensity analysis and the modal analysis, and comparatively analyzing an intensity analysis result, a modal analysis result and a stress test result respectively; and building a parametric simulation analysis system for the bridge grab ship unloader. According to the practical demand on the safety assessment of the bridge grab ship unloader, a VB development tool is combined with a parameterization technology of ANSYS, and modeling, the boundary conditions, an analysis process, result viewing and the like are parameterized with the parameterization technology to develop a set of parametric simulation analysis system for the bridge grab ship unloader, so that simulation analysis has the characteristics of high speed, accuracy, high practicability and the like.
Description
Technical field
The present invention relates to the application process of a kind of parametric simulation in bridge-type grab ship unloader safety assessment.
Background technology
Crane is the important infrastructure of the development of the national economy, and be also the extremely close facility of relation of living with the people, wherein ship unloaders play very important effect especially.The Main Function of ship unloaders metal construction bears ship unloaders deadweight and external applied load, and form necessary work system and space, to complete the various functions of ship unloaders, so the security of metal construction seems most important.Bridge-type grab ship unloader is as the main reclaimer device of bulk cargo terminals, whether the quality of its security performance is directly connected to harbour can normal operation, once bridge-type grab ship unloader breaks down, chain reaction will be produced, cause whole berth cargo handling system impaired, cause huge economic loss.In order to carry out science to equipment, effectively manage, ensure that it is used safely, after crane uses certain time limit, safety evaluation is carried out to its metal construction and have great significance.TSG Q7015-2008 " hoisting machinery periodic inspection rule " the 14th article of regulation " for use more than more than 15 years, be in heavy corrosion environment (as seashore, humid area etc.) or high wind region, large scale hoisting machinery that frequency of utilization is high; other measuring means should be increased targetedly as the case may be; if desired according to the actual safety case of large scale hoisting machinery and applying unit safety management level ability, carry out safety assessment." bridge-type grab ship unloader uses mostly by the sea, environment for use is severe, and there was dampness in the air and soot density is high, easily corrosion occurs, and ship unloaders working level is high, and above combined factors gets up very easily to cause ship unloaders generation security incident.So in recent years, along with the fast development of economy and the raising of society awareness of safety, propose more and more higher requirement to the safe operation of crane, increasing crane needs to carry out safety assessment.
When carrying out safety assessment to ship unloaders, there are the ship unloaders of a large amount of similar, different just some dimensional parameters, if start anew respectively to carry out modeling analysis to each ship unloaders to be assessed, like this will certainly the at substantial time, substantially increase human cost, extend the time of providing assessment report to ship unloaders applying unit.For overcoming the problem that above-mentioned repetition modeling and analysis brings, in finite element modeling and analytic process, introducing parameterized finite element modeling thought, making finite element modeling and analysis realize parametrization, thus improve the efficiency of finite element analysis.This patent relates to achievement will produce impetus to crane safety assessment technology, and improve safety assessment work efficiency, this will escort for crane safe operation, promote that economic fast and stable develops.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide the application process of a kind of parametric simulation in bridge-type grab ship unloader safety assessment, the method comprises the following steps:
The application process of parametric simulation in bridge-type grab ship unloader safety assessment, the method comprises:
A simplifies model, selection unit type and coordinate system;
B creates parameterized model;
C carries out parametrization to boundary condition;
D carries out parametrization to intensive analysis and model analysis,
Result view procedure is carried out parametrization by E;
F instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and intensive analysis result and modal analysis result is analyzed with stress test result and Results of Vibration respectively;
G sets up bridge-type grab ship unloader parametric simulation analytic system.
Compared with prior art, one or more embodiment of the present invention can have the following advantages by tool:
The present invention is closely around the actual needs of bridge-type grab ship unloader safety assessment, the parametric technology of VB developing instrument and ANSYS is utilized to combine, and utilize parametric technology modeling, boundary condition, analytic process and result to be checked etc. all to realize parametrization, develop a set of bridge-type grab ship unloader parametric simulation analytic system, make simulation analysis have the features such as quick, accurate, practical.
Accompanying drawing explanation
Fig. 1 is the application process realization flow figure of parametric simulation in bridge-type grab ship unloader safety assessment;
Fig. 2 is ship unloaders constraint schematic diagram;
Fig. 3 is simulation analysis system architecture logic figure.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
The application process of parametric simulation in bridge-type grab ship unloader safety assessment, the method comprises:
Step 10 pair model simplifies, selection unit type and coordinate system;
Step 20 creates parameterized model;
Step 30 pair boundary condition carries out parametrization;
Parametrization is carried out in step 40 pair intensive analysis and model analysis;
Step 50 carries out parametrization to result view procedure;
Step 60 instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and intensive analysis result and modal analysis result and described test result is analyzed;
Step 70 sets up bridge-type grab ship unloader parametric simulation analytic system.
Above-mentioned steps 10 specifically comprises: when simplifying model, omits and does not have influential structure to structural-load-carrying capacity, as ladder rail system, ignore the shape of large quality part, and substitute with the form of quality point, omit the wire rope of hoisting system, substitute with the form of power.According to the design feature of ship unloaders and the element characteristics selection unit type of ANSYS, the unit of selection is: 1. agent structure such as front and back crossbeam, column etc. adopt Beam189 unit; 2. front tension bar, back stay etc. adopt Link180 unit; 3. the large quality part in abridged such as engine house, hoisting drum, electrical equipment adopts Mass21 unit.Need make full use of the symmetry of ship unloaders structure when selecting coordinate system, uniform coordinate is rectangular coordinate system, and X forward is rear crossbeam direction, and Y forward is direction straight up, and true origin is then chosen at the mid point of extra large side sill.
Above-mentioned steps 20 specifically comprises: when creating parameterized model, first create Parametric geometric model, then create parameter finite element model.When creating geometric model, first create the key point needed for geometric model and direction key point, the coordinate figure of each key point need realize parametrization, then each key point is connected into line, and specifies the numbering of every bar line.When creating parameter finite element model, first create cross section attribute, the numerical value in the attribute of cross section all need realize parametrization.The cross sectional shape of each parts of ship unloaders is had nothing in common with each other, and the cross sectional shape as extra large heel post is box, and the cross sectional shape of hound is pipe, and the cross sectional shape of extra large side middle cross beam is I shape, and the cross section of crossbeam is then irregularly shaped.Wherein box, pipe, i shaped cross section all have corresponding cross-sectional shape in the unit cross-section library of ANSYS, only need input corresponding cross section geometric parameter when creating cross section attribute, the irregularly shaped cross section of crossbeam then needs when creating cross section attribute to input corresponding cross section mechanics parameter.
Above-mentioned steps 30 specifically comprises: comprise constraint, coupling and the parametrization of load to the parametrization of boundary condition, Fig. 2 is ship unloaders constraint schematic diagram, ship unloaders cart and rail contact 4 are reduced to A, B, C, D 4 point, A-B direction is crossbeam direction, be X forward in a model, C-B direction is orbital direction, is Z forward in a model, and Y forward is straight up.The displacement freedom of X, Y, Z-direction is designated as U respectively
x, U
y, U
z, be designated as R respectively around the rotary freedom of X, Y, Z-direction
x, R
y, R
z.Due to the effect of contraction of track, U a little
xall retrain; A, B point U
zall retrain, C, D point U
zall discharge; In addition U a little
yall retrain, and release R
x, R
y, R
z.These constraint conditions APDL parametrization statement describes, and constraint can be made to realize parametrization.The hinge of front and back pull bar and crossbeam and ladder frame is realized by coupling technique.The Rz of all hinges point all discharges, and other 5 degree of freedom are all coupled.These coupling conditions APDL parametrization statement is described, coupling can be made to realize parametrization.Because ship unloaders operation is complicated, operating mode is more, so needs consider various design condition according to actual conditions when carrying out simulation analysis.In order to realize the parametrization of multi-state load applying, full working scope multi-load need be adopted to walk load, its concrete steps are: load → circulation that imposed load in corresponding node → be stored as load step file → deletion applies applies the load of next operating mode → calculate all load step files, finally obtains the result of calculation that each load walks.
In above-mentioned steps 40: the process of intensive analysis and model analysis is carried out parametrization, comprises selection analysis type, analysis option etc. is set.
In above-mentioned steps 50, result view procedure is carried out that parametrization comprises counter stress cloud atlas, maximum stress, maximum displacement, eigenfrequncies and vibration models figure realize result and check parametrization.
Above-mentioned steps 60 specifically comprises: according to the result of intensive analysis, instruct the formulation of stress test scheme, obtain gravity stress simultaneously, to make up the deficiency that stress test cannot measure gravity stress, finally intensive analysis result and stress test result are analyzed.The natural frequency of vibration obtained according to model analysis and the corresponding vibration shape, instruct the formulation of vibration-testing scheme, finally modal analysis result and Results of Vibration is analyzed, for prevention mesomerism provides reference.
Above-mentioned steps 70 specifically comprises: utilize VB developing instrument to be combined by the parametric technology of ANSYS, develops a set of bridge-type grab ship unloader parametric simulation analytic system.Fig. 3 is simulation analysis system architecture logic figure, and in Fig. 3, left side is VB part, and right side is ANSYS part.First system completes parameters input, then generates APDL file, starts ANSYS on backstage simultaneously, and then ANSYS calls APDL and completes and calculate and export result of calculation, finally shows result of calculation in analogue system.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (6)
1. the application process of parametric simulation in bridge-type grab ship unloader safety assessment, is characterized in that, said method comprising the steps of:
A simplifies model, selection unit type and coordinate system;
B creates parameterized model;
C carries out parametrization to boundary condition;
D carries out parametrization to intensive analysis and model analysis,
Result view procedure is carried out parametrization by E;
F instructs stress test and vibration-testing according to intensive analysis and modal analysis result, and intensive analysis result and modal analysis result is analyzed with stress test result and Results of Vibration respectively;
G sets up bridge-type grab ship unloader parametric simulation analytic system.
2. the application process of parametric simulation in bridge-type grab ship unloader safety assessment as claimed in claim 1, is characterized in that, in described steps A:
Model simplification omits not have influential structure to structural bearing capacity;
The selection of cell type is the element characteristics of design feature according to ship unloaders and ANSYS;
The selection of coordinate system is the symmetry according to the mechanism that unloads a ship.
3. the application process of parametric simulation in bridge-type grab ship unloader safety assessment as claimed in claim 1, it is characterized in that, in described step B, parameterized model comprises Parametric geometric model and parameter finite element model.
4. the application process of parametric simulation in bridge-type grab ship unloader safety assessment as claimed in claim 1, it is characterized in that, in described step C, boundary condition parametrization comprises: the parametrization of constraint, coupling and load.
5. the application process of parametric simulation in bridge-type grab ship unloader safety assessment as claimed in claim 1, is characterized in that, in described step D: carry out parametrization to intensive analysis and model analysis and comprise selection analysis type and arrange analysis option.
6. the application process of parametric simulation in bridge-type grab ship unloader safety assessment as claimed in claim 1, it is characterized in that, in described step e, the parametrization of result view procedure comprises Stress Map, maximum stress, maximum displacement, eigenfrequncies and vibration models figure realize result and check parametrization.
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 true CN104915526A (en) | 2015-09-16 |
| CN104915526B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873859A (en) * | 2018-05-31 | 2018-11-23 | 浙江工业大学 | Based on the bridge-type grab ship unloader fault prediction model method for improving correlation 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 (2)
| 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 |
| US20130338983A1 (en) * | 2012-06-15 | 2013-12-19 | 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130338983A1 (en) * | 2012-06-15 | 2013-12-19 | Chevron U.S.A. Inc. | System and method for use in simulating a subterranean reservoir |
| 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 |
|---|
| 刘金等: ""参数化仿真在桥式抓斗卸船机安全评估中的应用"", 《自动化与信息工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873859A (en) * | 2018-05-31 | 2018-11-23 | 浙江工业大学 | Based on the bridge-type grab ship unloader fault prediction model method for improving correlation rule |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104915526B (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110263461B (en) | Bridge safety monitoring and early warning system based on BIM | |
| CN103226740B (en) | A kind of load distribution optimization method of double-crane collaborative operation | |
| Loktev et al. | Mathematical modeling of antenna-mast structures with aerodynamic effects | |
| CN104915526A (en) | Application method of parametric simulation in safety assessment of bridge grab ship unloader | |
| CN110059440A (en) | A kind of crane analysis of fatigue system and analysis method | |
| CN111583067A (en) | Urban underground large space construction safety early warning and emergency decision-making method and system | |
| CN110991918B (en) | Safety risk assessment method in existing building construction project | |
| Ren et al. | Comprehensive safety evaluation method of surrounding rock during underground cavern construction | |
| CN112523273A (en) | Supplement analysis method for horizontal displacement monitoring data of foundation pit crown beam | |
| CN115659729A (en) | Dam safety monitoring analysis method and system based on structural simulation calculation | |
| CN107271093A (en) | The full-bridge Cable force measuring method demarcated based on load | |
| Hyman | Patch dynamics for multiscale problems | |
| Yang et al. | Load reduction test method of similarity theory and BP neural networks of large cranes | |
| Li et al. | Reliability and sensitivity analysis of bridge crane structure | |
| CN115455523A (en) | Surrounding rock stability evaluation method and device | |
| Lorenzon et al. | Critical review of turbulence models for CFD for fatigue analysis in large steel structures | |
| CN113931079A (en) | Information modular construction method for cast-in-place concrete bridge support | |
| CN106934729A (en) | Building Testing and appraisal method and device | |
| CN107192491A (en) | Grade based on load increment demarcation is for hinged girder cable force measurement method | |
| Ghaffary et al. | Uncertainty quantification and probabilistic performance-based assessment of nonlinear behavior of moment resisting frames under design and extreme wind loads | |
| CN111353191A (en) | Construction method of roof steel structure with multi-curvature special-shaped curved surface | |
| Lu et al. | Dynamic Data Monitoring of Building Information of Nano-Modified Building Steel Structure Materials Using BIM Model | |
| CN206769908U (en) | A kind of subway station vertical shaft based on BIM opens the protecting, monitoring system of ingate | |
| CN116956445B (en) | BIM-based basket design method, computer equipment and computer readable storage medium | |
| Chen et al. | GM (11) Modelling of Failure Rate Prediction for Preventive Maintenance |
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 |