CN104008254B - Integrated optimization method of telescopic lifting arm static model - Google Patents
Integrated optimization method of telescopic lifting arm static model Download PDFInfo
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Abstract
The invention discloses an integrated optimization method of a telescopic lifting arm static model. Integrated optimization is carried out by means of an ISIGHT multi-disciplinary optimization platform and ANSYS finite element analysis software. Different analysis problems can be solved by integrating the ISIGHT optimization platform and the ANSYS analysis software, and solution strategies can be nested and combined at will. By means of intelligent exploration of design problems, novel design initial values are selected continuously, and simulation and optimization are automatically carried out. In the circulating and analyzing process each time, real-time monitoring can be achieved through ISIGHT, design parameter input and performance parameter output of products can be displayed in the process, and design personnel can conveniently monitor the input and the output. By means of optimization, a global solution which allows strength and rigidity of the telescopic lifting arm to be better is finally obtained, the size of the whole lifting arm is further reduced on the premise that bearing capacity of the telescopic lifting arm is guaranteed, and the method has a good effect in actual use.
Description
Technical field
The present invention relates to the telescoping boom that a kind of ISIGHT of utilization Optimization Platform calls ANSYS finite element analysis software integrated
Optimization method, belongs to Machine Design and automatic field.
Background technology
Along with social progress and scientific and technical developing rapidly, and driven by most industries demand and operation high benefit
Dynamic, the use of telescoping boom is more and more universal, and in the conventional design method of arm, arm width is high and respectively saves arm thickness etc.
Parameter is the most empirically chosen in a span, therefore bring that power consumption is excessive, waste of material, be not in good state, property
The problems such as energy is unreliable.For telescoping boom optimization should on the premise of meeting intensity and toughness constraints with high-mechanic, light from
Heavily it is designed for target.Optimizing owing to being limited to by software optimization ability, the most also of the softwares such as the existing ANSYS of utilization
The design of optimum can not be obtained.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of telescoping boom static models
Integrated optimization method, utilize ISIGHT Optimization Platform to call the telescoping boom integrated optimization side of ANSYS finite element analysis software
Method, the method is used ANSYS that arm carries out intensity and toughness analysis, and is realized Automatic Cycle emulation by ISIGHT Optimization Platform
And optimization, and finally obtain global optimization solution, improve the optimization efficiency of telescoping boom and optimize precision.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of integrated optimization method of telescoping boom static models, it is characterised in that: comprise the following steps:
(1) in ANSYS finite element analysis software, set up arm static models, and by arm intensity and toughness being carried out point
Input input file and the output output file of integrated optimization is obtained after analysis；
(2) ANSYS carries out integrated with ISIGHT by the way of programming, chooses the relevant parameter in input file as excellent
The design variable of change problem；
(3) use the mode of batch processing to drive ANSYS to carry out finite element analysis by the mode of analysis.bat script；
(4) read output file, therefrom transfer the desired value of arm optimization problem, binding occurrence and design variable optimal value；
(5) utilize the optimized algorithm in ISIGHT to be designed the correction of parameter, and revised parameter value is returned to
In input file, it is transferred to ANSYS and carries out next round Optimized Iterative；
(6) the binding occurrence compliance problem demand passed out until output file, then integrated optimization terminates, and exports global optimum
Solve.
When setting up arm static models, it is first determined the design variable of telescoping boom, volume target function and several are strong
Degree rigidity property constraints, then sets up arm model according to these parameters.
The design variable of described telescoping boom, volume target function and intensity and toughness constraints are as follows:
X=[H, W, ω, R1～Rn+1,A1～An+1]T
Minf=V1
0.8≤ω≤1.0,0.57≤H≤0.612,0.37≤W≤0.404,
0≤DOF≤0.5,S1,S2,…,S9≤4.84×108
Wherein, in the design variable set X of telescoping boom, H is the height of telescoping boom basic arm；W is the width of basic arm
Degree；ω is the weighted value of arm lower section nurbs curve；R1～Rn+1It is respectively arm basic arm until the upper half of n semi-girder
Panel is thick；A1～An+1Being respectively arm basic arm until n semi-girder upper and lower plates thickness difference, DOF is the constraint of arm deflection value；S1
～S9Stress constraint for 9 main node at selected arm dangerouse cross-section；Min f is the volume target function of arm.
Telescoping boom is five telescoping booms stretched, and has basic arm, one stretches joint arm, two stretches joint arm, three stretches joint arm, four stretches joint
Arm and five stretches joint arm.
The design variable of described telescoping boom, volume target function and intensity and toughness constraints are as follows:
X=[H, W, ω, R1～R6,A1～A6]T
Minf=V1
0.8≤ω≤1.0,0.57≤H≤0.612,0.37≤W≤0.404,
0≤DOF≤0.5,S1,S2,…,S9≤4.84×108,
R1,R2,R3∈ [0.0050,0.0060,0.0070],
R4,R5∈[0.0040,0.0050,0.0060]
R6∈[0.0030,0.0040,0.0050],
A1,A2,A3,A4,A5,A6∈[0.000,0.0010,0.0020]
Wherein, in the design variable set X of telescoping boom, H is the height of telescoping boom basic arm；W is the width of basic arm
Degree；ω is the weighted value of arm lower section nurbs curve；R1～R6It is respectively arm basic arm, one stretches, two stretch five semi-girders
The upper half panel thick；A1～A6It is respectively arm basic arm and five semi-girder upper and lower plates thickness difference；DOF is arm deflection value
Constraint；S1～S9Stress constraint for 9 main node at arm dangerouse cross-section；Min f is the volume target function of arm.
Rn+An, n=1,2,3,4,5,6, respectively basic arm and the lower thickness of slab of five semi-girders.
Beneficial effect: the integrated optimization method of telescoping boom that the present invention provides, by integrated ISIGHT Optimization Platform with
ANSYS analyzes software and can be used to solve different problem analyses, and can the nested and arbitrary solution strategies of combination.Pass through
Exploration intelligentized to design problem, constantly selects new design initial value, thus automatically emulates and optimize.Every time
During cycle analysis, ISIGHT can realize real-time monitoring, and the design parameter input of product and performance parameter export all
Can show during the course, facilitate designer to be monitored.By the optimization of the present invention, final acquisition makes telescoping boom intensity
The global solution that rigidity property is more excellent.The optimum results of the method is the most credible, on the premise of ensureing telescoping boom bearing capacity
Further reduce the overall volume of arm, achieve good effect in actual use.
Accompanying drawing explanation
Fig. 1 is that telescoping boom models schematic diagram；
Fig. 2 is arm basic arm cross section nurbs curve figure；
Fig. 3 is the integrated flow figure of the present invention；
Fig. 4 is integrated optimization feasibility proof diagram.
Detailed description of the invention
With example, the present invention is further described below in conjunction with the accompanying drawings.
Set up the Optimized model of telescoping boom
The present invention is as a example by SQS500A type telescoping boom, and the initial value relating generally to parameter is as shown in table 1；
Table 1 optimizes the guide look of front arm parameter
In arm work process, it is usually required mainly for the active force of three parts of consideration: lift heavy F3 straight down, this enforcement
The maximum lift heavy designing model in example is 20 tons, therefore takes F3=200000N；Along arm to the pulling force F of the rope in arm tail direction4=
F3/6≈33333.3N；Arm own wt G=ρ vg, ρ takes 7800kg/m3, in ANSYS the input direction of gravity acceleration g with
A/W is in opposite direction.The modeling situation of arm is as it is shown in figure 1, in the present embodiment as a example by the telescoping boom that five stretch, it has
Have basic arm 1, to stretch joint arm 2, two to stretch joint arm 3, three and stretch joint arm 4, four and stretch joint arm 5 and five and stretch joint arm 6.
The optimized mathematical model of telescoping boom can be set up according to above-mentioned parameter.
X=[H, W, ω, R1～R6,A1～A6]T
Minf=V1
0.8≤ω≤1.0,0.57≤H≤0.612,0.37≤W≤0.404,
0≤DOF≤0.5,S1,S2,…,S9≤4.84×108,
R1,R2,R3∈ [0.0050,0.0060,0.0070],
R4,R5∈[0.0040,0.0050,0.0060]
R6∈[0.0030,0.0040,0.0050],
A1,A2,A3,A4,A5,A6∈[0.000,0.0010,0.0020]
Wherein, in the design variable set X of telescoping boom, H is the height of telescoping boom basic arm；W is the width of basic arm
Degree；ω is the weighted value of arm lower section nurbs curve, the ω in corresponding diagram 21And ω3Value；R1～R6It is respectively arm base
This arm, one stretch, two to stretch the upper half panel of five semi-girders thick；A1～A6It is respectively arm basic arm and five semi-girder upper and lower plates
Thickness difference, i.e. Rn+An(n=1,2,3,4,5,6) it is respectively basic arm and the lower plate thickness of five semi-girders；DOF is arm amount of deflection
Value constraint；S1～S9Stress constraint for 9 main node at arm dangerouse cross-section；Min f is the volume V of arm1Target letter
Number.
In conjunction with the optimization step of Fig. 3, ANSYS finite element analysis software is set up above-mentioned arm model, and by it
Intensity and toughness obtains input input file and the output output file of integrated optimization after being analyzed；
ANSYS carries out integrated with ISIGHT by the way of programming, chooses the relevant parameter in input file as optimization
The design variable of problem；
The mode of employing batch processing drives ANSYS to carry out finite element analysis by the mode of analysis.bat script；
Read output file, therefrom transfer the desired value of optimization problem, binding occurrence and design variable optimal value；
Utilize the optimized algorithm in ISIGHT to be designed the correction of parameter, and revised parameter value is backed within
In input file, it is transferred to ANSYS and carries out next round Optimized Iterative；
Until the binding occurrence compliance problem demand that output file passes out, then integrated optimization terminates, and exports globally optimal solution,
As shown in Figure 4.
Application results contrast
Table 2 is the contrast between the optimum results of this case and existing optimum results.
Compare before and after table 2 arm optimization
| Variate-value | Before optimization | After optimization |
| Basic arm height H (m) | 0.612 | 0.588 |
| Basic arm width W (m) | 0.404 | 0.37 |
| Weights omega | 1.0 | 0.99 |
| Upper thickness of slab R1, R2, R3(m) | 0.006 | 0.006 |
| Upper thickness of slab R4, R5(m) | 0.005 | 0.005 |
| Upper thickness of slab R6(m) | 0.004 | 0.004 |
| Lower thickness of slab increment A1～A6(m) | 0.000 | 0.000 |
| Volume V1(m3) | 0.294930 | 0.2686 |
As seen from the above table, the arm volume on the premise of ensureing to meet constraints of the Optimization Design used by this case is excellent
Change degree reaches about 8.93%, it is ensured that the bearing capacity of telescoping boom, decreases the cost that arm makes, improves arm
Overall work performance.
The present invention uses ANSYS that arm carries out intensity and toughness analysis, and realizes automatically following by ISIGHT Optimization Platform
Ring emulation and optimization, and finally obtain global optimization solution, improve the optimization efficiency of telescoping boom and optimize precision.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. the integrated optimization method of telescoping boom static models, it is characterised in that: comprise the following steps:
(1) in ANSYS finite element analysis software, set up arm static models, and by arm intensity and toughness is analyzed after
Obtain input input file and the output output file of integrated optimization；
(2) ANSYS carries out integrated with ISIGHT by the way of programming, and the relevant parameter chosen in input file is asked as optimization
The design variable of topic；
(3) use the mode of batch processing to drive ANSYS to carry out finite element analysis by the mode of analysis.bat script；
(4) read output file, therefrom transfer the desired value of arm optimization problem, binding occurrence and design variable optimal value；
(5) utilize the optimized algorithm in ISIGHT to be designed the correction of parameter, and revised parameter value is backed within defeated
Enter in file, be transferred to ANSYS and carry out next round Optimized Iterative；
(6) the binding occurrence compliance problem demand passed out until output file, then integrated optimization terminates, and exports globally optimal solution；
When setting up arm static models, it is first determined the design variable of telescoping boom, volume target function and several intensity are firm
Degree performance constraints, then sets up arm model according to these parameters；
The design variable of described telescoping boom, volume target function and intensity and toughness constraints are as follows:
X=[H, W, ω, R1～Rn+1,A1～An+1]T
Minf=V1
0.8≤ω≤1.0,0.57≤H≤0.612,0.37≤W≤0.404,
0≤DOF≤0.5,S1,S2,…,S9≤4.84×108
Wherein, in the design variable set X of telescoping boom, H is the height of telescoping boom basic arm；W is the width of basic arm；ω
Weighted value for arm lower section nurbs curve；R1～Rn+1It is respectively arm basic arm until the upper half panel of n semi-girder
Thick；A1～An+1Being respectively arm basic arm until n semi-girder upper and lower plates thickness difference, DOF is the constraint of arm deflection value；S1～S9
Stress constraint for 9 main node at selected arm dangerouse cross-section；Min f is the volume V of arm1Object function.
The integrated optimization method of telescoping boom static models the most according to claim 1, it is characterised in that: telescoping boom is
Five telescoping booms stretched, have basic arm, one stretch joint arm, two stretch joint arm, three stretch joint arm, four stretch joint arm and five stretch joint arm.
The integrated optimization method of telescoping boom static models the most according to claim 1 and 2, it is characterised in that stretch described in:
The design variable of contracting arm, volume target function and intensity and toughness constraints are as follows:
X=[H, W, ω, R1～R6,A1～A6]T
Minf=V1
0.8≤ω≤1.0,0.57≤H≤0.612,0.37≤W≤0.404,
0≤DOF≤0.5,S1,S2,…,S9≤4.84×108,
R1,R2,R3∈ [0.0050,0.0060,0.0070],
R4,R5∈[0.0040,0.0050,0.0060]
R6∈[0.0030,0.0040,0.0050],
A1,A2,A3,A4,A5,A6∈[0.000,0.0010,0.0020]
Wherein, in the design variable set X of telescoping boom, H is the height of telescoping boom basic arm；W is the width of basic arm；ω
Weighted value for arm lower section nurbs curve；R1～R6Be respectively arm basic arm, one stretch, two upper half stretching five semi-girders
Cross section thickness of slab；A1～A6It is respectively arm basic arm and five semi-girder upper and lower plates thickness difference；DOF is the constraint of arm deflection value；S1
～S9Stress constraint for 9 main node at arm dangerouse cross-section；Min f is the volume volume V of arm1Object function.
The integrated optimization method of telescoping boom static models the most according to claim 3, it is characterised in that: Rn+An, n=1,
2,3,4,5,6, respectively basic arm and the lower thickness of slab of five semi-girders.
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| CN104346501A (en) * | 2014-11-25 | 2015-02-11 | 河海大学常州校区 | Integrated optimization method and system for static model of fully-extending boom of crane |
| CN105045979A (en) * | 2015-07-06 | 2015-11-11 | 河海大学常州校区 | Integrated optimization method for statics model of excavator operating apparatus |
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| EP2096075A1 (en) * | 2008-02-28 | 2009-09-02 | Cargotec Patenter AB | Telescopic boom |
| CN101670984A (en) * | 2009-09-29 | 2010-03-17 | 长沙中联重工科技发展股份有限公司 | Optimal control method and control system of single-cylinder bolt type telescopic boom trail |
| CN102662331A (en) * | 2012-04-17 | 2012-09-12 | 中南大学 | Method for simulating deflection of automobile suspension arm on the basis of virual reality |
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2014
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| EP2096075A1 (en) * | 2008-02-28 | 2009-09-02 | Cargotec Patenter AB | Telescopic boom |
| CN101670984A (en) * | 2009-09-29 | 2010-03-17 | 长沙中联重工科技发展股份有限公司 | Optimal control method and control system of single-cylinder bolt type telescopic boom trail |
| CN102662331A (en) * | 2012-04-17 | 2012-09-12 | 中南大学 | Method for simulating deflection of automobile suspension arm on the basis of virual reality |
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