CN104102786A - Crankshaft three-dimensional kinetic analysis method efficient and quick in optimization - Google Patents
Crankshaft three-dimensional kinetic analysis method efficient and quick in optimization Download PDFInfo
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- CN104102786A CN104102786A CN201410351554.6A CN201410351554A CN104102786A CN 104102786 A CN104102786 A CN 104102786A CN 201410351554 A CN201410351554 A CN 201410351554A CN 104102786 A CN104102786 A CN 104102786A
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Abstract
The invention relates to the field of engine design, in particular to a crankshaft three-dimensional kinetic analysis method efficient and quick in optimization. The crankshaft three-dimensional kinetic analysis method efficient and quick in optimization includes the steps: A, collecting relevant data of an engine and parts of a crankshaft system; B, using an Exicite Power Unit module to set up a crankshaft analysis model; C, subjecting a main bearing seat to meshing and model reduction; D, subjecting a crankshaft to automatic meshing and model reduction; E, calculating load boundary conditions; F, using Abaqus for stress calculation of a crankshaft arm; G, subjecting a crankshaft connecting rod neck and a main journal circular bead to meshing; H, using Abaqus for stress calculation of the crankshaft connecting rod neck and the main journal circular bead; I, analyzing calculation results. The crankshaft three-dimensional kinetic analysis method efficient and quick in optimization has the advantages that plenty of time and manpower can be saved; mesh quality is guaranteed while time consumption can be greatly reduced; quickness in construction of the analysis model is achieved; time consumed for calculation is shortened, and convergence of the calculation results and high efficiency are achieved.
Description
Technical field
The present invention relates to engine design field, relate in particular to a kind of bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum.
Background technology
Bent axle is one of most important parts of engine, and its dimensional parameters not only affects overall dimensions and the weight of engine to a great extent, and affects to a great extent the reliable and life-span of engine.The malicious event of bent axle may cause the badly damaged of other parts and engine.In the improvement of engine, the improvement of bent axle also occupies critical role.Along with development and the strengthening of internal combustion engine, the condition of work of bent axle is further harsh.Therefore, it is more serious that the strength and stiffness problems of bent axle just becomes, and dimensional parameters, version, material and the technique of necessary selecting properly bent axle in the time of design bent axle, in the hope of obtaining the most rational most economical effect.
Bent axle is the gaseous tension that changes in continuous cycle, back and forth and under the inertial force of the quality that rotatablely moves and their moment (torque and moment of flexure) acting in conjunction works, not only bending but also reverse of bent axle.Bent axle is complex-shaped, and stress concentration phenomenon is serious, particularly more outstanding in the round-corner transition regional stress concentration phenomenon of crankshaft journal and crank.Therefore,, in engine design process, will carry out efficiently dynamics calculation fast to this region and be necessary.
Summary of the invention
For the defect existing in prior art or deficiency, technical matters to be solved by this invention is: the bent axle three-dimensional dynamics analytical approach that a kind of short, efficiency is high, reliability is high efficient rapid Optimum consuming time is provided.
The technical scheme that the present invention takes, for a kind of bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum is provided, comprises the following steps:
A, collection engine and crankshaft system parts related data;
B, use Exicite Power Unit module are built Crankshaft Analysis model;
C, main bearing seat is carried out to grid division, and carry out model reduction;
D, bent axle is carried out to automatic mesh division, and carry out model reduction;
E, assumed (specified) load boundary condition;
F, use Abaqus march shaft arm Stress calculation;
G, crank-shaft link neck and king journal fillet are carried out to grid division;
H, use Abaqus carry out crank-shaft link neck and the calculating of king journal crankshaft fillets stress;
I, analysis result.
As a further improvement on the present invention, in described step B, use Bearing Wall and the Generic Body unit of Exicite PU module.
As a further improvement on the present invention, in described step B, the mass property of piston is increased to small end of connecting rod end.
As a further improvement on the present invention, in described step B, introduce Bearing Wall unit and represent main bearing seat, by bearing auxiliary connection, bent axle and main bearing seat are coupled together.
As a further improvement on the present invention, the load boundary condition of described step e is to obtain after the explosion pressure curve under the each operating mode of input.
As a further improvement on the present invention, whether described step I analysis result, meet design requirement according to interpretation of result, if do not met, also needs to carry out suitable structure optimization.
The invention has the beneficial effects as follows: adopted after analytical approach of the present invention, do not needed complex parts to carry out grid division, reduced plenty of time and manpower; Can carry out automatic mesh division to bent axle, ensure mesh quality, reduce plenty of time consumption simultaneously; Analytical model is set up fast; Calculating spent time shortens, numerical convergence, and efficiency is high.
Brief description of the drawings
Fig. 1 is the process flow diagram of the bent axle three-dimensional dynamics analytical approach of the efficient rapid Optimum of the present invention;
Fig. 2 is the analytical model schematic diagram of the bent axle three-dimensional dynamics analytical approach of the efficient rapid Optimum of the present invention;
Fig. 3 is the bent axle three-dimensional dynamics analytical approach main bearing seat finite element model figure of the efficient rapid Optimum of the present invention.
Embodiment
Below in conjunction with brief description of the drawings and embodiment, the present invention is further described.
As shown in Figure 1, the invention provides a kind of bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum, comprise the following steps:
A, collection engine and crankshaft system parts related data; Engine structure information is as cylinder number, stroke, ignition order etc., and the relevant information of the part such as crankshaft system part piston, connecting rod, bearing, bent axle;
B, use Exicite Power Unit module are built Crankshaft Analysis model; Do not use Engine/Power Unit and Piston unit, use Bearing Wall unit, introduce Generic Body unit.In Excite Power Unit module, build analytical model according to the schematic diagram shown in Fig. 2.In analytical model, do not use engine Engine or power assembly Power Unit unit, so just need not be to complex parts grid divisions such as gray iron, oil sump, front end end cover and wheel boxes, and carry out grid file reduction and calculate.As everyone knows, in cae analysis, grid is divided and is occupied plenty of time and energy, especially complex parts.Not grid division, has saved the plenty of time, and analytical cycle is shortened greatly.
In model, do not use piston Piston unit, and the mass property of piston is increased to small end of connecting rod end.Piston is main its reciprocal inertia-responsive impact of consideration in the dynamic analysis process of bent axle, and connecting rod has reciprocal inertia effect and rotatory inertia effect in analytic process, therefore, in patent of the present invention, the reciprocal inertia effect of the reciprocal inertia effect of piston and connecting rod is merged and considered, reduce element number in model, shorten and calculate the time that solves.
In analytical model, introduce Bearing Wall unit and represent main bearing seat, by bearing auxiliary connection, bent axle and main bearing seat are coupled together.Main bearing seat is carried out to grid division, and main bearing seat structure is fairly simple, easily grid division, as shown in Figure 3.Use Abaqus to reduce calculating to grid file.Several main bearing seats share same main bearing seat grid reduction file, save many time.
By engine structure information and crankshaft system parts information input model.
C, main bearing seat is carried out to grid division, and carry out model reduction; Use Excite PU to generate the reduction of subsystem grid and calculate input file;
D, bent axle is carried out to automatic mesh division, and carry out model reduction; Use the Autoshaft function in Excite Power Unit module, bent axle is carried out to automatic mesh division and reduction calculating.
E, assumed (specified) load boundary condition;
F, use Abaqus march shaft arm Stress calculation; Input the explosion pressure curve under each operating mode, obtain the load information under each operating mode.Use the FE Analysis function of Excite Power Unit, obtain the .inp input file of crank arm Stress calculation.
G, crank-shaft link neck and king journal fillet are carried out to grid division;
H, use Abaqus carry out crank-shaft link neck and the calculating of king journal crankshaft fillets stress; By the Fillet Modeler function in Excite Power Unit module, crank-shaft link neck and king journal fillet are carried out to the division of automatic fine grid.In FE Analysis, meticulous fillet grid file and crank arm grid file are merged, use Abaqus to carry out Stress calculation to axle journal fillet.
I, analysis result.According to result of calculation, crankshaft system is evaluated, if do not met design requirement, also needed to be optimized, re-start calculating.Meet, complete analysis.
In described step B, use Bearing Wall and the Generic Body unit of Exicite PU module.
In described step B, the mass property of piston is increased to small end of connecting rod end.
In described step B, introduce Bearing Wall unit and represent main bearing seat, by bearing auxiliary connection, bent axle and main bearing seat are coupled together.
The load boundary condition of described step e is to obtain after the explosion pressure curve under the each operating mode of input.
Whether described step I analysis result, meet design requirement according to interpretation of result, if do not met, also needs to carry out suitable structure optimization.
The present invention does not use Engine/Power Unit unit in model, need not carry out grid division to parts such as gray iron, oil sump, front end end cover, wheel boxes, reduces in a large number the time; In model, do not use Piston unit, its qualitative attribute is given on small end of connecting rod, reduce element number.In model, use Bearing Wall unit, main bearing seat is carried out to grid division, use Abaqus to reduce calculating to grid file, main bearing seat can share 1 grid reduction file, saves time.
The method, based on Excite Power Unit software, is used Hypermesh, Abaqus software to carry out analytical calculation to engine crankshaft dynamic, obtains the stress distribution of region-of-interest.Practice shows, for evaluation and optimization engine crankshaft, design is fast and effectively to the method.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. a bent axle three-dimensional dynamics analytical approach for efficient rapid Optimum, is characterized in that: comprise the following steps:
A, collection engine and crankshaft system parts related data;
B, use Exicite Power Unit module are built Crankshaft Analysis model;
C, main bearing seat is carried out to grid division, and carry out model reduction;
D, bent axle is carried out to automatic mesh division, and carry out model reduction;
E, assumed (specified) load boundary condition;
F, use Abaqus march shaft arm Stress calculation;
G, crank-shaft link neck and king journal fillet are carried out to grid division;
H, use Abaqus carry out crank-shaft link neck and the calculating of king journal crankshaft fillets stress;
I, analysis result.
2. the bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum according to claim 1, is characterized in that: the Bearing Wall and the Generic Body unit that in described step B, use Exicite PU module.
3. the bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum according to claim 1, is characterized in that: in described step B, the mass property of piston is increased to small end of connecting rod end.
4. the bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum according to claim 1, is characterized in that: in described step B, introduce Bearing Wall unit and represent main bearing seat, by bearing auxiliary connection, bent axle and main bearing seat are coupled together.
5. the bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum according to claim 1, is characterized in that: the load boundary condition of described step e is to obtain after the explosion pressure curve under the each operating mode of input.
6. the bent axle three-dimensional dynamics analytical approach of efficient rapid Optimum according to claim 1, is characterized in that: described step I analysis result, whether meet design requirement according to interpretation of result, and if do not met, also need to carry out suitable structure optimization.
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| CN201410351554.6A CN104102786A (en) | 2014-07-23 | 2014-07-23 | Crankshaft three-dimensional kinetic analysis method efficient and quick in optimization |
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| CN201410351554.6A CN104102786A (en) | 2014-07-23 | 2014-07-23 | Crankshaft three-dimensional kinetic analysis method efficient and quick in optimization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665286A (en) * | 2017-10-31 | 2018-02-06 | 华晨汽车集团控股有限公司 | One kind is on automobile engine bearings dynamic analysis method |
| CN107679347A (en) * | 2017-10-30 | 2018-02-09 | 山东云内动力有限责任公司 | Crankshaft stress analysis method based on finite element |
| CN108228936A (en) * | 2016-12-21 | 2018-06-29 | 华晨汽车集团控股有限公司 | A kind of connection rod of automobile engine dynamic analysis method |
| CN110140024A (en) * | 2016-10-21 | 2019-08-16 | 西门子股份公司 | Method for placing pixel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6944580B1 (en) * | 2000-06-30 | 2005-09-13 | United Technologies Corporation | Method and system for designing frames and cases |
| CN101158989A (en) * | 2007-11-02 | 2008-04-09 | 奇瑞汽车有限公司 | Engine crankshaft dynamic analysis method |
-
2014
- 2014-07-23 CN CN201410351554.6A patent/CN104102786A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6944580B1 (en) * | 2000-06-30 | 2005-09-13 | United Technologies Corporation | Method and system for designing frames and cases |
| CN101158989A (en) * | 2007-11-02 | 2008-04-09 | 奇瑞汽车有限公司 | Engine crankshaft dynamic analysis method |
Non-Patent Citations (3)
| Title |
|---|
| QILI WU, ET AL.: "Notice of RetractionLubrication study on a connecting rod big end bearing of two-stroke marine diesel engine", 《2010 INTERNATIONAL CONFERENCE ON COMPUTER APPLICATION AND SYSTEM MODELING》 * |
| 孔丹丹: "4EC发动机曲轴轴系多体动力学仿真分析", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 岳东鹏等: "基于EXCITE的曲轴系统扭转振动分析", 《天津工程师范学院学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140024A (en) * | 2016-10-21 | 2019-08-16 | 西门子股份公司 | Method for placing pixel |
| CN110140024B (en) * | 2016-10-21 | 2021-05-07 | 西门子股份公司 | Method for placing pixels |
| CN108228936A (en) * | 2016-12-21 | 2018-06-29 | 华晨汽车集团控股有限公司 | A kind of connection rod of automobile engine dynamic analysis method |
| CN107679347A (en) * | 2017-10-30 | 2018-02-09 | 山东云内动力有限责任公司 | Crankshaft stress analysis method based on finite element |
| CN107665286A (en) * | 2017-10-31 | 2018-02-06 | 华晨汽车集团控股有限公司 | One kind is on automobile engine bearings dynamic analysis method |
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