CN106991234A - Agricultural transportation vehicle bodyshell structure design and optimization method - Google Patents
Agricultural transportation vehicle bodyshell structure design and optimization method Download PDFInfo
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- CN106991234A CN106991234A CN201710215891.6A CN201710215891A CN106991234A CN 106991234 A CN106991234 A CN 106991234A CN 201710215891 A CN201710215891 A CN 201710215891A CN 106991234 A CN106991234 A CN 106991234A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
A kind of agricultural transportation vehicle bodyshell structure design and optimization method, comprise the following steps：FEM model is set up, finite element analysis is carried out；Contrasted respectively with overall and car Shell Finite Element Method model the analysis result of vehicle body by carrying out static electrical testing inspection, judge whether its error meets the requirements, with analysis result in both most preferably for Optimized model；Model analysis is carried out to the model after optimization, eigenfrequncies and vibration models are obtained；Analysis of fatigue is carried out to the model after optimization, fatigue life and fatigue safety coefficient is obtained；Shape topology design is done to body structure, integral body is obtained and ensures the maximum topology of the rigidity of structure, the reference model of body dimensions optimization is obtained according to topology；The reference model obtained according to topological optimization sets up Optimized model, further increases corresponding part, obtains complete auto model.The construction cycle can be shortened using the application method, accurate optimization design.
Description
Technical field
The present invention relates to body structure design field in agricultural machinery, specifically a kind of agricultural transportation vehicle bodyshell structure
Design and optimization method.
Background technology
With the development of simulation software and computer aided design software, total digitalization analogue simulation turns into design and led
The development trend in domain., will be limited and with the lifting of material and demand, the design requirement for haulage vehicle is also increasingly improved
First method applies to the design that vehicle body design has also been practically applicable to each producer, is mainly reflected in：With FInite Element to Preliminary design
Transporter vehicle body carry out assistant analysis and will greatly improve the performance of Vehicle Body Development, the efficiency of design and analysis and vehicle body；Vehicle exists
Under the effect of various load, will bend, it is eccentric reverse and it is overall the deformation such as reverse, and vehicle body is the main support portion of transporter
Part, be determine conveyor designs rationally and quality key factor, directly affect cost and reliability.Traditional vehicle body design
Method is difficult the complicated applied force and deformation for considering transporter, and FInite Element just can solve the problem that this problem；Utilize
FInite Element carries out Constructional Modal Analysis, can obtain the dynamic characteristic of vehicle body framework, avoid vehicle body from resonating from design
Phenomenon；By the optimization design to vehicle body framework, the weight of vehicle body can be further reduced, is ensureing the premise of body performance
It is lower fully to save material, the fuel consumption during operation is reduced, this is to reduction vehicle body, integral vehicle cost and cost of transportation
All have great importance.But the design for vehicle body is designed to deal with often by branch point, such as individually designed car
Body housing, car door etc., and have ignored the performance evaluation when being integrated into an entirety.
The content of the invention
It is a primary object of the present invention to propose a kind of agricultural transportation vehicle body structure design and optimization method, using limited
First simulation analysis, reduce the vehicle body design cycle, improve the performance of Vehicle Body Development, the efficiency of design and analysis and vehicle body, and energy
Stressing conditions in the case of enough more real reflection vehicle overall loads.
To achieve the above objectives, technical scheme is as follows：
A kind of agricultural transportation vehicle bodyshell structure design and optimization method, comprise the following steps：
(1) FEM model is set up, including：Vehicle body block mold includes housing and car door and single bodyshell
Model；
(2) in the case where transport vehicle is fully loaded, it is overall to vehicle body bend and reverse stress under two kinds of typical conditions and
Deformation carries out Static finite element analysis；And situation when setting the fully loaded traveling of transport vehicle on the softer soil in road surface is made
For constraints, finite element analysis is carried out using Ansys；Above-mentioned finite element analysis individually is carried out to car housing；
(3) by carry out static electrical testing inspection respectively with overall and car Shell Finite Element Method model the analysis result pair of vehicle body
Than, judge whether its error meets the requirements, with analysis result in both it is optimal for Optimized model；
(4) model analysis is carried out to the model after optimization, obtains eigenfrequncies and vibration models；
(5) analysis of fatigue is carried out to the model after optimization, obtains fatigue life and fatigue safety coefficient；
(6) shape topology design is done to body structure, integral body is obtained and ensures the maximum topology of the rigidity of structure, root
The reference model of body dimensions optimization is obtained according to topology；
(7) reference model obtained according to topological optimization sets up Optimized model, further increases corresponding part, has obtained
Whole auto model.
Further, vehicle body block mold is set up using CAD software in the step (1), and imports finite element analysis software
FEM model is set up in ANSYS.
Further, the foundation of the FEM model should include unit selection, material definition, mesh generation and grid
Quality examination etc..
Further, the key point of the static electrical testing of the step (3) is chosen according to actual loading situation.
Further, step (4) model analysis uses Theory of free rigid body displacement, and original state analysis process can not consider
External load and boundary condition, but according to agricultural transportation vehicle use environment limit relatively weak soil be used as constraints.
Further, the step (5) obtains optimization front of the car using Fatigue Simulation analysis is carried out in ANSYS softwares
Fatigue life and minimum safety factor.
Further, step (6) the building topology Optimized model, the shape of body structure is carried out with ANSYS softwares
Topology design, obtains reference model.
Further, the step (7) can use Ansys to carry out diversification and be analysed to ensure that complete vehicle is conformed to
Ask.
The present invention has the advantage that and effect：
1st, with existing finite element theory, under general finite element analysis software ANSYS support, car is being analyzed
Agricultural transportation vehicle vehicle body FEM model is established on the basis of body structure mechanical characteristic, carried out the various operating modes of vehicle body it is quiet,
Dynamic analysis is studied, and good theoretical foundation is provided for the structural test and its optimization design of vehicle body.
2nd, individually setting up model progress force analysis for vehicle body and housing ensures the accuracy of vehicle body design.
3rd, according to agricultural transportation vehicle use environment, especially it is provided with constraints and is designed with accurate optimization transport vehicle.
4th, whole design and optimization process has that the cycle is short, cost is low, high reliability.
5th, structure design and optimization are carried out using existing finite element software, greatly reduces the vehicle body design cycle.
Brief description of the drawings
Fig. 1 is the application design and Optimizing Flow figure
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
1st, vehicle body block mold and the independent model of housing are set up using CAD, finite element analysis software ANSYS is imported with this
In set up FEM model, wherein unit selection selection solid element Solid45, material properties parameter definition, using 10mm's
Unit size and free net dividing mode carry out grid division and mesh quality are checked.
2nd, it is overall to vehicle body to bend and reversing the stress under two kinds of typical conditions and change in the case where transport vehicle is fully loaded
Shape situation carries out Static finite element analysis；And situation conduct when setting the fully loaded traveling of transport vehicle on the softer soil in road surface
Constraints, finite element analysis is carried out using Ansys；Above-mentioned finite element analysis individually is carried out to car housing；
3. contrasted respectively with overall and car Shell Finite Element Method model the analysis result of vehicle body by carrying out static electrical testing inspection,
Judge whether its error meets the requirements, with analysis result in both it is optimal for Optimized model；
4. the model after pair optimization carries out model analysis, eigenfrequncies and vibration models are obtained；
5. the model after pair optimization carries out analysis of fatigue, fatigue life and fatigue safety coefficient are obtained；
6. a pair body structure does shape topology design, obtain integral body and ensure the maximum topology of the rigidity of structure, root
The reference model of body dimensions optimization is obtained according to topology；
7. the reference model obtained according to topological optimization sets up Optimized model, further increase corresponding part, obtained
Whole auto model.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (1)
1. a kind of agricultural transportation vehicle bodyshell structure design and optimization method, comprise the following steps：
(a) FEM model is set up, including：Vehicle body block mold includes housing and car door and single bodyshell mould
Type；
(b) it is overall to vehicle body to bend and reversing the stress under two kinds of typical conditions and deformation in the case where transport vehicle is fully loaded
Situation carries out Static finite element analysis；And situation when setting the fully loaded traveling of transport vehicle on the softer soil in road surface is as about
Beam condition, finite element analysis is carried out using Ansys；Above-mentioned finite element analysis individually is carried out to car housing；
(c) contrasted, sentenced with overall and car Shell Finite Element Method model the analysis result of vehicle body respectively by carrying out static electrical testing inspection
Whether its error of breaking meets the requirements, with analysis result in both it is optimal for Optimized model；
(d) model analysis is carried out to the model after optimization, obtains eigenfrequncies and vibration models；
(e) analysis of fatigue is carried out to the model after optimization, obtains fatigue life and fatigue safety coefficient；
(f) do shape topology design to body structure, obtain integral body and ensure the maximum topology of the rigidity of structure, according to opening up
Flutter the reference model that shape obtains body dimensions optimization；
(g) reference model obtained according to topological optimization sets up Optimized model, further increases corresponding part, obtains complete
Auto model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710215891.6A CN106991234A (en) | 2017-03-31 | 2017-03-31 | Agricultural transportation vehicle bodyshell structure design and optimization method |
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| CN201710215891.6A CN106991234A (en) | 2017-03-31 | 2017-03-31 | Agricultural transportation vehicle bodyshell structure design and optimization method |
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| CN106991234A true CN106991234A (en) | 2017-07-28 |
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| CN201710215891.6A Pending CN106991234A (en) | 2017-03-31 | 2017-03-31 | Agricultural transportation vehicle bodyshell structure design and optimization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109063401A (en) * | 2018-10-17 | 2018-12-21 | 吉林大学 | The method for realizing the optimization of structure contact force is displaced using Equivalent Static |
Citations (5)
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| CN101510230A (en) * | 2009-03-11 | 2009-08-19 | 同济大学 | Vehicle road load emulation method |
| CN102012958A (en) * | 2010-12-29 | 2011-04-13 | 奇瑞汽车股份有限公司 | Method for designing automobile body structure layout |
| CN102945307A (en) * | 2012-11-27 | 2013-02-27 | 北京汽车股份有限公司 | Automobile chassis key structural member structure optimization design method |
| CN104424371A (en) * | 2013-08-29 | 2015-03-18 | 北汽福田汽车股份有限公司 | Method for building conceptual design model of white automobile body |
| CN105740499A (en) * | 2016-01-14 | 2016-07-06 | 华南农业大学 | Structure design and optimization method for light and simple wheel type conveyor rack in hillside orchard |
-
2017
- 2017-03-31 CN CN201710215891.6A patent/CN106991234A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101510230A (en) * | 2009-03-11 | 2009-08-19 | 同济大学 | Vehicle road load emulation method |
| CN102012958A (en) * | 2010-12-29 | 2011-04-13 | 奇瑞汽车股份有限公司 | Method for designing automobile body structure layout |
| CN102945307A (en) * | 2012-11-27 | 2013-02-27 | 北京汽车股份有限公司 | Automobile chassis key structural member structure optimization design method |
| CN104424371A (en) * | 2013-08-29 | 2015-03-18 | 北汽福田汽车股份有限公司 | Method for building conceptual design model of white automobile body |
| CN105740499A (en) * | 2016-01-14 | 2016-07-06 | 华南农业大学 | Structure design and optimization method for light and simple wheel type conveyor rack in hillside orchard |
Non-Patent Citations (2)
| Title |
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| 王彦伟 等: ""有限元法在车身设计中的应用"", 《机械设计与制造》 * |
| 高云凯 等: ""轿车车身敢赌优化方法研究"", 《同济大学学报(自然科学吧)》 * |
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|---|---|---|---|---|
| CN109063401A (en) * | 2018-10-17 | 2018-12-21 | 吉林大学 | The method for realizing the optimization of structure contact force is displaced using Equivalent Static |
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Application publication date: 20170728 |