CN105243192A - Mass loading method and system - Google Patents
Mass loading method and system Download PDFInfo
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- CN105243192A CN105243192A CN201510589505.0A CN201510589505A CN105243192A CN 105243192 A CN105243192 A CN 105243192A CN 201510589505 A CN201510589505 A CN 201510589505A CN 105243192 A CN105243192 A CN 105243192A
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Abstract
The present invention relates to a mass loading method and system. The mass loading method and system applies the mass to load on a structural model. The method comprises: intensively preprocessing the mass to obtain multiple discrete mass points; carrying out finite element modeling on the structural model to obtain multiple structural nodes; establishing a sub-regional matching relation between the multiple discrete mass points and the multiple structural nodes; and using a three-dimensional interpolation function to carry out sub-regional interpolation, thereby realizing that the mass is uniformly loaded on the structural model. The mass loading method and system of the present invention exert the following beneficial technical effects that: the mass is enabled to distribute on the structural nodes of the structural model as uniform as possible, and the physical behavior can be truly reflected.
Description
Technical field
The present invention relates to quality loading method and system.
Background technology
Structure finite element imitation is usually coupled with Other subjects and solves specific gongwu problem.Mass inertial force also needs to be carried on structural model as continuous print physical field where necessary.Structural model adopts finite element to describe, and discrete is beam, bar, shell or entity unit set.Quality needs reasonably to be distributed on structure node corresponding to structural model.The natural division in quality foundation parts and region, is first treated to many independently quality point according to centralized system.
Way is in the past by quality point and structure node direct correlation nearby, and between the two for being rigidly connected, all degree of freedom of quality point places one's entire reliance upon the degree of freedom of structure, shows as servo-actuated form.In fact, quality is being macroscopically uniformly continous distribution, and this connection is " stiff " comparatively, mass force can be rendered as the behavior of centre-point load, perhaps, local there will be stress and concentrates, and can not reflect its physical characteristics really, and is difficult to ensure that moment distribution is consistent before and after transmission.
Summary of the invention
One object of the present invention is, structure discrete be finite elements basis on, propose the effective ways that quality rationally loads on structural model, quality is evenly distributed on the structure node of structural model as much as possible, can truly reflects its physical behavio(u)r.
Above object of the present invention is realized by a kind of quality loading method, and described quality loading method is for being carried in structural model by quality, and described method comprises:
Centralization pre-service is carried out to obtain discrete multiple quality point to described quality;
Finite element modeling is carried out to obtain multiple structure node to described structural model;
Set up the subregion matching relationship between described multiple quality point and described multiple structure node; And
Adopt three-dimensional interpolation mode to carry out sub-regional interpolation, thus realize uniform quality to be carried on structural model.
According to technique scheme, quality loading method of the present invention can play following Advantageous Effects: quality is evenly distributed on the structure node of structural model as much as possible, can truly reflect its physical behavio(u)r.
Preferably, the subregion matching relationship set up between described multiple quality point and described multiple structure node comprises: described multiple quality point divided by multiple region, described multiple structure node is divided by described multiple region, make in each region in described multiple region, respective quality point mates mutually with corresponding construction node.
According to technique scheme, quality loading method of the present invention can play following Advantageous Effects: by mating with the territory, rationalization partition of structure node quality point, make quality be evenly distributed on as much as possible on the structure node of structural model further.
It is preferred that described three-dimensional interpolation mode is conservation form interpolating function.
According to technique scheme, quality loading method of the present invention can play following Advantageous Effects: by choosing preferably three-dimensional interpolation mode, make quality be evenly distributed on as much as possible on the structure node of structural model further.
It is preferred that described structural model is aircraft wing structure model.
According to technique scheme, quality loading method of the present invention can play following Advantageous Effects: efficiently can carry out structure mechanics analysis, stress analysis and dynamic response analysis etc. to aircraft wing structure.
It is preferred that Region dividing carries out according to the structural topology subregion of physical components.
According to technique scheme, quality loading method of the present invention can play following Advantageous Effects: by rational Region dividing, makes quality be evenly distributed on as much as possible on the structure node of structural model further.
Above object of the present invention is also realized by a kind of quality loading system, and described quality loading system is for being carried in structural model by quality, and described system comprises:
Quality pretreatment module, for carrying out centralization pre-service to obtain discrete multiple quality point to described quality;
Finite element modeling module, for carrying out finite element modeling to obtain multiple structure node to described structural model;
Subregion matching module, for setting up the subregion matching relationship between described multiple quality point and described multiple structure node; And
Sub-regional interpolation module, for adopting three-dimensional interpolation mode to carry out sub-regional interpolation, thus realizes uniform quality to be carried on structural model.
According to technique scheme, quality loading system of the present invention can play following Advantageous Effects: quality is evenly distributed on the structure node of structural model as much as possible, can truly reflect its physical behavio(u)r.
Preferably, the subregion matching relationship set up between described multiple quality point and described multiple structure node comprises: described multiple quality point divided by multiple region, described multiple structure node is divided by described multiple region, make in each region in described multiple region, respective quality point mates mutually with corresponding construction node.
According to technique scheme, quality loading system of the present invention can play following Advantageous Effects: by mating with the territory, rationalization partition of structure node quality point, make quality be evenly distributed on as much as possible on the structure node of structural model further.
It is preferred that described three-dimensional interpolation mode is conservation form interpolating function.
According to technique scheme, quality loading system of the present invention can play following Advantageous Effects: by choosing preferably three-dimensional interpolation mode, make quality be evenly distributed on as much as possible on the structure node of structural model further.
It is preferred that described structural model is aircraft wing structure model.
According to technique scheme, quality loading system of the present invention can play following Advantageous Effects: efficiently can carry out structure mechanics analysis, stress analysis and dynamic response analysis etc. to aircraft wing structure.
It is preferred that Region dividing carries out according to the structural topology subregion of physical components.
According to technique scheme, quality loading system of the present invention can play following Advantageous Effects: by rational Region dividing, makes quality be evenly distributed on as much as possible on the structure node of structural model further.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the quality loading method of one embodiment of the invention.
Fig. 2 is the schematic diagram of the quality loading system of one embodiment of the invention.
Fig. 3 a is the quality point distribution schematic diagram after centralization pre-service, and Fig. 3 b is the structure node distribution schematic diagram of structural model.
Embodiment
Below in conjunction with specific embodiments and the drawings, the invention will be further described; set forth more details in the following description so that fully understand the present invention; but the present invention obviously can implement with multiple this alternate manner described that is different from; those skilled in the art can when doing similar popularization, deduction without prejudice to when intension of the present invention according to practical situations, therefore should with content constraints protection scope of the present invention of this specific embodiment.
Fig. 1 is the process flow diagram of the quality loading method of one embodiment of the invention.Fig. 2 is the schematic diagram of the quality loading system of one embodiment of the invention.Fig. 3 a is the quality point distribution schematic diagram after centralization pre-service, and Fig. 3 b is the structure node distribution schematic diagram of structural model.
As shown in Figure 1, according to one embodiment of the invention, quality loading method is for being carried in structural model by quality, and the method comprises: carry out centralization pre-service to obtain discrete multiple quality point to quality; Finite element modeling is carried out to obtain multiple structure node to structural model; Set up the subregion matching relationship between multiple quality point and multiple structure node; And adopt three-dimensional interpolation mode to carry out sub-regional interpolation, thus realize uniform quality to be carried on structural model.
Centralization pre-service refers to: continuous print architecture quality, by relevant technical requirement, with the geometric position at place for foundation, be divided into several minizones, then the mass property (comprising quality, barycenter) of each minizone is obtained, the mass property of these discrete minizones just constitutes the mass distribution of structure, and this departure process is the centralization pre-service of quality.
As shown in Figure 2, according to one embodiment of the invention, quality loading system is for being carried in structural model by quality, and this system comprises: quality pretreatment module, for carrying out centralization pre-service to quality to obtain discrete multiple quality point; Finite element modeling module, for carrying out finite element modeling to obtain multiple structure node to structural model; Subregion matching module, for setting up the subregion matching relationship between multiple quality point and multiple structure node; And sub-regional interpolation module, for adopting three-dimensional interpolation mode to carry out sub-regional interpolation, thus realize uniform quality to be carried on structural model.
Preferably, the subregion matching relationship set up between described multiple quality point and multiple structure node comprises: multiple quality point divided by multiple region, multiple structure node is divided by described multiple region, make in each region in multiple region, respective quality point mates mutually with corresponding construction node.
It is preferred that three-dimensional interpolation mode is conservation form interpolating function.Like this, quality can evenly reasonably be distributed in structural model, embodies the effect of continuous print gravity field.
Certainly, those skilled in the art are appreciated that on the basis of the disclosure of invention three-dimensional interpolation mode is not limited to conservation form interpolating function.Conservation form interpolating function be only the present invention a kind of preferred form of adoptable three-dimensional interpolation mode, constant volume also can be adopted to change other three-dimensional interpolation modes such as (CVT) method of interpolation, transfinite interpolation method (TFI).Above-mentioned modification falls within protection scope of the present invention equally.
It is preferred that Region dividing carries out according to the structural topology subregion of physical components.That is, for the region that quality point is concentrated, Region dividing is as far as possible careful, and complete physical components will be divided in a region as far as possible.
Structural topology subregion refers to that the physical unit composition according to structural model carries out the division in region, and such as, on wing, the region distributed according to rib divides.
It is preferred that as best shown in figures 3 a and 3b, quality loading method of the present invention and system can be applicable on aircraft wing structure.Wing structure comprises some rib R1, R2 ..., some beam B1, B2 ... Deng.Such as, be roughly parallel to rib structure and wing structure be divided into four regions Qa, Qb, Qc, Qd.Quality point belongs to region nearby respectively by coordinate.Such as, quality point ma1, ma2, ma3, ma4, ma5 ... (totally 11 quality point) are divided in the Qa of region; The rest may be inferred, divides no longer describe in detail for the quality point in region Qb, Qc, Qd.Choose the suitable structure node for interpolation simultaneously, generally choose the structure node on forward and backward beam.Such as, structure node Sa1, Sa2, Sa3, Sa4, Sa5, Sa6 ... (totally 18 system points) are divided in the Qa of region; The rest may be inferred, divides no longer describe in detail for the structure node in region Qb, Qc, Qd.Remove the close structure node in position, that is, tolerance is less than for the spacing of two structure nodes, only retains one of them structure node.The finite element node of structure selects the node on primary load bearing parts as far as possible, and the structure node of the same area can not be completely coplanar.Each quality point will be under the jurisdiction of some zonings.Then, adopt the three-dimensional interpolation function of such as conservation form interpolating function, carry out sub-regional interpolation, thus realize uniform quality to be carried on structural model.
Certainly, those skilled in the art are appreciated that on the basis of the disclosure of invention structural model that the present invention applies is not limited to aircraft wing structure model.Aircraft wing structure model is only the applicable a kind of example occasion of the present invention, and the present invention also can be applicable to other structural models, the structural model that such as slenderness ratio is larger.Above-mentioned modification falls within protection scope of the present invention equally.
Structural model is as being described as plate, shell or solid element, and because the space that is distributed in of structure node is uniform, quantity is multiplied, and man-to-man between quality point and structure node is rigidly connected just inapplicable.The method and system that the present invention proposes solves the problem of quality uniform load on detailed finite meta-model.
The impact of independent quality point is at local area, and based on such consideration, adopt sub-regional interpolation instead of overall interpolation, its impact has been locked in certain limit, controls local interpolation error simultaneously, ensure that the consistance of moment distribution.
Above the specific embodiment of the present invention is described, but it will be understood to those of skill in the art that, above-mentioned embodiment is not construed as limiting the invention, and those skilled in the art can carry out multiple amendment on the basis of above disclosure, and do not exceed scope of the present invention.
Claims (10)
1. a quality loading method, for quality is carried in structural model, described method comprises:
Centralization pre-service is carried out to obtain discrete multiple quality point to described quality;
Finite element modeling is carried out to obtain multiple structure node to described structural model;
Set up the subregion matching relationship between described multiple quality point and described multiple structure node; And
Adopt three-dimensional interpolation mode to carry out sub-regional interpolation, thus realize uniform quality to be carried on structural model.
2. quality loading method as claimed in claim 1, it is characterized in that, the subregion matching relationship set up between described multiple quality point and described multiple structure node comprises: described multiple quality point divided by multiple region, described multiple structure node is divided by described multiple region, make in each region in described multiple region, respective quality point mates mutually with corresponding construction node.
3. quality loading method as claimed in claim 1, it is characterized in that, described three-dimensional interpolation mode is conservation form interpolating function.
4. quality loading method as claimed in claim 1, it is characterized in that, described structural model is aircraft wing structure model.
5. quality loading method as claimed in claim 2, it is characterized in that, Region dividing carries out according to the structural topology subregion of physical components.
6. a quality loading system, for quality is carried in structural model, described system comprises:
Quality pretreatment module, for carrying out centralization pre-service to obtain discrete multiple quality point to described quality;
Finite element modeling module, for carrying out finite element modeling to obtain multiple structure node to described structural model;
Subregion matching module, for setting up the subregion matching relationship between described multiple quality point and described multiple structure node; And
Sub-regional interpolation module, for adopting three-dimensional interpolation mode to carry out sub-regional interpolation, thus realizes uniform quality to be carried on structural model.
7. quality loading system as claimed in claim 6, it is characterized in that, the subregion matching relationship set up between described multiple quality point and described multiple structure node comprises: described multiple quality point divided by multiple region, described multiple structure node is divided by described multiple region, make in each region in described multiple region, respective quality point mates mutually with corresponding construction node.
8. quality loading system as claimed in claim 6, it is characterized in that, described three-dimensional interpolation mode is conservation form interpolating function.
9. quality loading system as claimed in claim 6, it is characterized in that, described structural model is aircraft wing structure model.
10. quality loading system as claimed in claim 7, it is characterized in that, Region dividing carries out according to the structural topology subregion of physical components.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112749447A (en) * | 2021-01-30 | 2021-05-04 | 上海交通大学 | Aircraft flow-solid load conversion method based on data partition matching |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070016388A1 (en) * | 2005-07-18 | 2007-01-18 | Shimel Bruce D | Mass on model |
| CN101739672A (en) * | 2009-12-02 | 2010-06-16 | 北京中星微电子有限公司 | Method and device for equalizing histogram based on sub-regional interpolation |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070016388A1 (en) * | 2005-07-18 | 2007-01-18 | Shimel Bruce D | Mass on model |
| CN101739672A (en) * | 2009-12-02 | 2010-06-16 | 北京中星微电子有限公司 | Method and device for equalizing histogram based on sub-regional interpolation |
Non-Patent Citations (3)
| Title |
|---|
| 林小夏,张树有,陈婧,薛杨: "产品仿真分析中曲面不均匀分布载荷施加", 《机械工程学报》 * |
| 王和平,宋新民: "飞机翼面类结构质量分布自动算法研究", 《航空学报》 * |
| 王和平,杨华保,苏浩秦: "飞机机翼结构质量分配方法研究", 《航空计算技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112749447A (en) * | 2021-01-30 | 2021-05-04 | 上海交通大学 | Aircraft flow-solid load conversion method based on data partition matching |
| CN112749447B (en) * | 2021-01-30 | 2022-10-14 | 上海交通大学 | Aircraft flow-solid load conversion method based on data partition matching |
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Effective date of registration: 20220926 Address after: No.25, Zhangyang Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201210 Patentee after: COMMERCIAL AIRCRAFT CORPORATION OF CHINA, Ltd. Patentee after: Shanghai Aircraft Design Research Institute Co.,Ltd. Address before: No.25 Zhangyang Road, Pudong New Area, Shanghai 201210 Patentee before: COMMERCIAL AIRCRAFT CORPORATION OF CHINA, Ltd. Patentee before: COMMERCIAL AIRCRAFT CORPORATION OF CHINA, LTD SHANGHAI AIRCRAFT DESIGN AND Research Institute |
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