CN105653799A - Integrated designing method of metal diaphragm storage tank - Google Patents
Integrated designing method of metal diaphragm storage tank Download PDFInfo
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- CN105653799A CN105653799A CN201511025592.3A CN201511025592A CN105653799A CN 105653799 A CN105653799 A CN 105653799A CN 201511025592 A CN201511025592 A CN 201511025592A CN 105653799 A CN105653799 A CN 105653799A
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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
- G06F30/17—Mechanical parametric or variational design
Abstract
The invention discloses an integrated designing method of a metal diaphragm storage tank; the method comprises the following steps: 1) scheme designing: shaping the storage tank approximately, and calculating according to an experiential formula to obtain main structure characteristic parameters of the storage tank product; 2) diaphragm designing; 3) metal diaphragm simulating; and 4) housing designing, wherein the step 3) refers to creating a finite element model of a metal diaphragm with the structure parameters determined in the step 2), adding material attributes in the finite element model, setting boundary conditions and constraint conditions to form a metal diaphragm model, carrying out simulation on the metal diaphragm model, and returning and outputting a simulation result; and the step 4) housing designing refers to carrying out the housing designing on the basis of the diaphragm designing, and the designing method is similar to the diaphragm designing. The integrated designing method carries out integrated designing on the storage tank, so the qualified rate and the designing efficiency of the product are effectively improved; the coordination among the structures is guaranteed; and in the simulation, the housing modeling is carried out on the basis of the diaphragm model, so the matching of the designing parameters is guaranteed.
Description
Technical field
The present invention relates to a metal diaphragm tank method of design based on C# and PCL language, it is applied to metal diaphragm tank design analysis field.
Background technology
Metal diaphragm tank is because principle of work is simple, and the plurality of advantages such as flow variable range is big are subject to applying more and more widely.
Utilize Finite Element Method, tank carried out rationally, important step that the indication of accurate mechanical characteristic is design analysis, in finite element analysis process, the pre-treatment work such as Modling model often occupy major part workload. Therefore, the efficiency of modeling directly affects the progress of analytical work. Setting up rocket beam model process relative complex by hand, workload is big. Therefore can select to adopt parametric method modeling. Parametric modeling is replaced by the partial parameters variable in finite element model, for variable compose new value can again automatically, rapid modeling. The workload of engineering personnel can be reduced like this, it is to increase working efficiency. Many large-scale finite element business softwares both provide parametric modeling instrument, the PCL language of such as MSC.Patran.
At present, the design of metal diaphragm tank product carries out according to the mode of operation of sub-module, the design effort of metal diaphragm, the design effort of tank main structure and tank finite element simulation analytical work disconnect and carry out, and produce before each main structure do not carry out sufficient finite element simulation analysis, the part that this kind of mode of operation has the following disadvantages:
(1) the product design cycle is long, inefficiency.
(2) tank each main anatomical connectivity place Harmony is poor, specifically comprises metal diaphragm and shell junction, shell and installation anatomical connectivity place. Conforming product rate is caused to reduce.
(3) design of tank product parameters more depends on the engineering experience of designer, and quality can not effectively be ensured.
Summary of the invention
Long for the existing metal diaphragm tank product design cycle, the technical problem of inefficiency, tank each main anatomical connectivity place Harmony difference, the present invention proposes one can metal diaphragm tank integrated design method.
The technical solution of the present invention is:
Metal diaphragm tank integrated design method provided by the present invention, its special character is: comprise the following steps:
1) conceptual design
1.1) existing metal diaphragm configuration, housing configuration is collected;
1.2) roughly being shaped by tank according to system task, empirically formulae discovery draws tank product key structural feature parameter;
2) diaphragm design
2.1) from existing metal diaphragm configuration, select this metal diaphragm configuration designed, according to the geometric relationship of integral part each in selected metal diaphragm, obtain representing equation of constraint between each structural parameter of each integral part,
2.2) extract the crucial driving parameter in structural parameter according to equation of constraint, and drive parameter to determine driven parameter according to key;
3) metal diaphragm emulation
3.1) utilize step 2) in the structural parameter the determined finite element model that carries out metal diaphragm create, and in finite element model adding material attribute, final condition is set and constraint condition forms metal diaphragm model;
3.2) metal diaphragm model is emulated and return Output simulation result;
4) housing design: the design of housing is divided into air cavity quasi spline and sap cavity quasi spline;
4.1) air cavity quasi spline
In metal diaphragm design basis, from the junction of metal diaphragm and air cavity profile, carry out the determination of air cavity profile parameter;
4.2) sap cavity quasi spline
On the basis of metal diaphragm design, from the junction of metal diaphragm and sap cavity profile, carry out the determination of sap cavity profile parameter;
The determination of parameter is specially:
The sap cavity profile configuration that this designs is selected from existing housing configuration, according to the geometric relationship of each integral part in selected sap cavity profile configuration, obtain representing equation of constraint between each structural parameter of each integral part, sap cavity configuration adopts cone section+ellipse designed arc-shaped appearance, by analyzing the final rollover states of barrier film, provide bottom flange tangential angle, thus determine tank sap cavity cone section angle, oval arc and cone section are tangent and meet certain position relation with barrier film top, carry out sap cavity quasi spline on this basis;
5) on the basis of metal diaphragm and housing design, it is determined that size and the quantity of structure are installed, complete parametric modeling;
6) tank entirety emulation
6.1 enter tank emulation module, utilize step 2), step 4) and step 5) in the structural parameter determined carry out tank global finite element model creation, and in finite element model adding material attribute, final condition is set and constraint condition forms tank whole model;
6.2) tank entirety being carried out Static Strength Analysis, outer pressure Instability Analysis and dynamic analysis, whether judged result is reasonable, if unreasonable, then needs amendment parameter to carry out weight analysis, until result is reasonable;
7) heat protection design analysis is carried out
According to entrance combustion gas parameter, select heat-protection layer material and arrangement, it is determined that heat-protection layer thickness, completes heat protection design, carry out static heat protection simulation analysis.
Further, when tank whole model creates, described shell modeling carries out on barrier film model basis;
Described genus barrier film and housing contour connection place are provided with parameterized units seed;
The modeling of described installation structure carries out on shell basis.
Compared with prior art, advantage is in the present invention:
1, tank has been carried out integrated design by the present invention, effectively improves qualification rate and the design efficiency of product; Meanwhile, the housing of tank is design on the basis of barrier film in the present invention, and installing structure is design on the basis of housing and barrier film, ensure that the Harmony between each structure. When emulating, shell modeling carries out on barrier film model basis, ensure that the matching of design variable; By to metal diaphragm and housing contour connection place parameters unit seed, ensure that the harmonious of finite element model junction unit; Equally, the modeling installing structure carries out on shell basis, ensure that the Harmony of geometry and finite element model.
2, the present invention only need to provide the driving parameter being concerned about in design process, can set up barrier film parameterized model;According to computer sim-ulation result, it is necessary to only need to revise relevant parameter when correcting principle parameter recalculates, it is not necessary to repeat the operation of finite element pre-process and post-process, it is to increase working efficiency, shorten the design cycle, reduce development cost.
3, it is integrated with Optimized Program, for user provides optimal design parameters to combine, reduces depending on unduly engineering experience in the past.
Accompanying drawing explanation
Fig. 1 is tank design effort flow process figure.
Fig. 2 is metal diaphragm structural representation.
Fig. 3 metal diaphragm tank structural representation.
Embodiment
Below in conjunction with accompanying drawing, the design process that the present invention is detailed is introduced.
1, conceptual design
1.1) existing metal diaphragm configuration, housing configuration is collected;
1.2) roughly being shaped by tank according to system task, empirically formulae discovery draws tank product key structural feature parameter;
2) diaphragm design
2.1) from existing metal diaphragm configuration, select this metal diaphragm configuration designed, according to the geometric relationship of integral part each in selected metal diaphragm, obtain representing equation of constraint between each structural parameter of each integral part,
2.2)) extract the crucial driving parameter in structural parameter according to equation of constraint, and drive parameter to determine driven parameter according to key;
As shown in Figure 2, structure parameters comprises top arc radius R to diaphragm configuration1, cone segment length L, cone angle, pre-flange groove central diameter D0, pre-flange groove radius R0, center of circle height Y1, barrier film height H. The equation of constraint that in this module, integrated metal barrier film is relevant, input barrier film drives parameter to complete barrier film primary design. The major advantage of barrier film setting steps is to simplify diaphragm design process, only need to input a small amount of driving parameter and just can complete diaphragm design.
3) barrier film emulation
Utilize step 2) in the structural parameter determined carry out finite element model establishment, material properties adds, final condition and constraint condition setting, submit analytical calculation to and return Output simulation result; During emulation, taking initial buckling load as optimization aim, respectively taking each main structure parameters of barrier film as design variable, carry out parameter optimization, obtain best parameter group, it is provided that the reference frame that user designs as parameter optimization. This step major advantage has been that the automatization of finite element model pre-process and post-process carries out, finite element simulation often needs in the energy realistic model pre-process and post-process work by 90%, the real result analysis embodying achievement only accounts for the workload of 10%, therefore, the automatization of model pre-process and post-process work carries out the workload by greatly reducing designer. On the other hand, the operation of optimizer can be designer and provides design considerations, reduces the undue dependence to engineering experience.
4) housing design: the design of housing is divided into air cavity quasi spline and sap cavity quasi spline;
4.1) air cavity quasi spline
In metal diaphragm design basis, from the junction of metal diaphragm and air cavity profile, carry out the determination of air cavity profile parameter;
4.2) sap cavity quasi spline
On the basis of metal diaphragm design, from the junction of metal diaphragm and sap cavity profile, carry out the determination of sap cavity profile parameter;
The determination of parameter is specially:
The sap cavity profile configuration that this designs is selected from existing housing configuration, according to the geometric relationship of each integral part in selected sap cavity profile configuration, obtain representing equation of constraint between each structural parameter of each integral part, the sap cavity configuration of this design adopts cone section+ellipse designed arc-shaped appearance, by analyzing the final rollover states of barrier film, provide bottom flange tangential angle, thus determine tank sap cavity cone section angle, oval arc and cone section are tangent and meet certain position relation with barrier film top, carry out sap cavity quasi spline on this basis;
5) on the basis of metal diaphragm and housing design, it is determined that size and the quantity of structure are installed, complete parametric modeling;
6) tank entirety emulation
6.1 enter tank emulation module, utilize step 2), step 4) and step 5) in the structural parameter determined carry out tank global finite element model creation, and in finite element model adding material attribute, final condition is set and constraint condition forms tank whole model;
6.2) tank entirety being carried out Static Strength Analysis, outer pressure Instability Analysis and dynamic analysis, whether judged result is reasonable, if unreasonable, then needs amendment parameter to carry out weight analysis, until result is reasonable;
7) heat protection design analysis is carried out
According to entrance combustion gas parameter, select heat-protection layer material and arrangement, it is determined that heat-protection layer thickness, completes heat protection design, carry out static heat protection simulation analysis.
In addition, scheme also has the integrated feature of professional experiences. Metal diaphragm parameter designing experience, business software analytical parameter setup experience are carried out quantitative description by the present invention, efficiently solve and metal diaphragm umklapp process relates to material nonlinearity, the non-linear problem of geometrical non-linearity equal altitudes, it is ensured that barrier film realizes reversion smoothly on the basis that the failure behaviour such as fold, bias does not occur. Researchist is helped to carry out tank product design quickly and efficiently.
Claims (2)
1. metal diaphragm tank integrated design method, it is characterised in that: comprise the following steps:
1) conceptual design
1.1) existing metal diaphragm configuration, housing configuration is collected;
1.2) roughly being shaped by tank according to system task, empirically formulae discovery draws tank product key structural feature parameter;
2) diaphragm design
2.1) from existing metal diaphragm configuration, select this metal diaphragm configuration designed, according to the geometric relationship of integral part each in selected metal diaphragm, obtain representing equation of constraint between each structural parameter of each integral part,
2.2) extract the crucial driving parameter in structural parameter according to equation of constraint, and drive parameter to determine driven parameter according to key;
3) metal diaphragm emulation
3.1) utilize step 2) in the structural parameter the determined finite element model that carries out metal diaphragm create, and in finite element model adding material attribute, final condition is set and constraint condition forms metal diaphragm model;
3.2) metal diaphragm model is emulated and return Output simulation result;
4) housing design: the design of housing is divided into air cavity quasi spline and sap cavity quasi spline;
4.1) air cavity quasi spline
In metal diaphragm design basis, from the junction of metal diaphragm and air cavity profile, carry out the determination of air cavity profile parameter;
4.2) sap cavity quasi spline
On the basis of metal diaphragm design, from the junction of metal diaphragm and sap cavity profile, carry out the determination of sap cavity profile parameter;
The determination of parameter is specially:
The sap cavity profile configuration that this designs is selected from existing housing configuration, according to the geometric relationship of each integral part in selected sap cavity profile configuration, obtain representing equation of constraint between each structural parameter of each integral part, sap cavity configuration adopts cone section+ellipse designed arc-shaped appearance, by analyzing the final rollover states of barrier film, provide bottom flange tangential angle, thus determine tank sap cavity cone section angle, oval arc and cone section are tangent and meet certain position relation with barrier film top, carry out sap cavity quasi spline on this basis;
5) on the basis of metal diaphragm and housing design, it is determined that size and the quantity of structure are installed, complete parametric modeling;
6) tank entirety emulation
6.1 enter tank emulation module, utilize step 2), step 4) and step 5) in the structural parameter determined carry out tank global finite element model creation, and in finite element model adding material attribute, final condition is set and constraint condition forms tank whole model;
6.2) tank entirety being carried out Static Strength Analysis, outer pressure Instability Analysis and dynamic analysis, whether judged result is reasonable, if unreasonable, then needs amendment parameter to carry out weight analysis, until result is reasonable;
7) heat protection design analysis is carried out
According to entrance combustion gas parameter, select heat-protection layer material and arrangement, it is determined that heat-protection layer thickness, completes heat protection design, carry out static heat protection simulation analysis.
2. metal diaphragm tank integrated design method according to claim 1, it is characterised in that:
When tank whole model creates, described shell modeling carries out on barrier film model basis;
Described genus barrier film and housing contour connection place are provided with parameterized units seed;
The modeling of described installation structure carries out on shell basis.
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| CN201511025592.3A CN105653799B (en) | 2015-12-31 | 2015-12-31 | Metal diaphragm tank integrated design method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106528928A (en) * | 2016-10-01 | 2017-03-22 | 北京宇航系统工程研究所 | Wave distribution radial type storage box short shell |
| CN106971021A (en) * | 2017-02-23 | 2017-07-21 | 西安航天动力研究所 | A kind of combustion gas is pressurized differential tank integral design method |
| CN109933885A (en) * | 2019-03-08 | 2019-06-25 | 中国人民解放军战略支援部队航天工程大学 | A kind of liquid rocket ellipsoid bottom Container geometric parameter design method |
| CN112975099A (en) * | 2021-02-09 | 2021-06-18 | 兰州空间技术物理研究所 | Electron beam welding tool for metal diaphragm and connecting ring |
| CN113479348A (en) * | 2021-07-02 | 2021-10-08 | 兰州空间技术物理研究所 | Membrane sealing and clamping assembly capable of achieving real-time and efficient discharge in multi-dimensional high-speed flight |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106528928A (en) * | 2016-10-01 | 2017-03-22 | 北京宇航系统工程研究所 | Wave distribution radial type storage box short shell |
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| CN106971021A (en) * | 2017-02-23 | 2017-07-21 | 西安航天动力研究所 | A kind of combustion gas is pressurized differential tank integral design method |
| CN106971021B (en) * | 2017-02-23 | 2020-11-06 | 西安航天动力研究所 | Integrated design method for gas pressurization differential storage tank |
| CN109933885A (en) * | 2019-03-08 | 2019-06-25 | 中国人民解放军战略支援部队航天工程大学 | A kind of liquid rocket ellipsoid bottom Container geometric parameter design method |
| CN112975099A (en) * | 2021-02-09 | 2021-06-18 | 兰州空间技术物理研究所 | Electron beam welding tool for metal diaphragm and connecting ring |
| CN113479348A (en) * | 2021-07-02 | 2021-10-08 | 兰州空间技术物理研究所 | Membrane sealing and clamping assembly capable of achieving real-time and efficient discharge in multi-dimensional high-speed flight |
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| CN105653799B (en) | 2018-08-17 |
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