CN106227944B - The applying method of the threedimensional model radial force of ring-shaped work pieces - Google Patents

The applying method of the threedimensional model radial force of ring-shaped work pieces Download PDF

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Publication number
CN106227944B
CN106227944B CN201610592254.6A CN201610592254A CN106227944B CN 106227944 B CN106227944 B CN 106227944B CN 201610592254 A CN201610592254 A CN 201610592254A CN 106227944 B CN106227944 B CN 106227944B
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China
Prior art keywords
ring
work pieces
shaped work
threedimensional model
radial force
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CN106227944A (en
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汪中厚
刘欣荣
赵超凡
王冰青
张艺
杨润春
张翠
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

Provide a kind of applying method of the threedimensional model radial force of ring-shaped work pieces, include: one, establish the threedimensional model of ring-shaped work pieces, and corresponding material properties and mesh-density are set, grid dividing is carried out to it after demonstrating the convergence of grid, generates tire flexible body file；Two, the coordinate and its serial number of grid node obtained after grid dividing are extracted；Three, the power F to be applied at the grid node for being directed toward the center of circle of ring-shaped work pieces is decomposed to obtain Fx and Fy, F along x, y-axis direction using force resolution principlex=F sin α, Fy=F cos α,X, y is the coordinate of grid node；Four, the Fx and Fy obtained after the power of all grid nodes is decomposed carries out summarizing arrangement, then produces node ID-power title-power numerical value table；Five, node ID-power title-power numerical value table is imported into threedimensional model to the application for completing the radial force of threedimensional model.

Description

The applying method of the threedimensional model radial force of ring-shaped work pieces
Technical field
The invention belongs to computer program fields, more particularly to the applying method of radial force in threedimensional model.
Background technique
ADAMS software is that (Mechanical Dynamics Inc., has been incorporated to the U.S. by machine power company of the U.S. MSC company) exploitation it is a dedicated for Virtual Product Development in engineering goods in terms of software.More bodies are established by the software Kinetic model and virtual experimental can help designer to find design defect, and lack according to this in product development stage Sunken analysis and research, and then propose a series of improvement project.The use of the software greatly reduces Machinery Products Development Cost in the process improves the efficiency in mechanical product design development field.Dynamics and kinematics are being carried out with the software Before analysis, needs to apply model as required the power and movement on certain orientation, meet actual requirement by rationally applying Power and movement, can be improved the reliability and accuracy of simulation calculated result.
However that the direction based on coordinate system is always formed by along x, y, z is enterprising for the application of the analog force in ADAMS Capable, this limitation is unable to satisfy the requirement that the application of power is carried out in more direction.In addition to this, power is being carried out every time During application, it is required to carry out under corresponding coordinate system, this undoubtedly increases work difficulty and workload, reduces Working efficiency.The application of even distributed force is carried out along radial direction especially in ADAMS, it is on the one hand special due to the power direction Property, application difficulty is improved, on the other hand, since the power belongs to even distributed force, number is more, makes the reduction of its operability.
Further, the relationship of the kinematics and dynamics for the complication system studied in ADAMS under actual conditions is one The extremely complex operating condition of kind obtains various reliable data to improve the accuracy that computer calculates product simulation, helps Product developer and designer have found and solve the problems, such as, thus need to be continuously improved the authenticity of emulation, reduce to the full extent The gap of emulation and actual conditions.This is just needed to improve in ADAMS under the absolute accuracy of the application of power and simulation scenarios absolutely Authenticity.However the existing finite element analysis software similar to ADAMS is mostly that power load is arranged by hand, it has not been convenient to can not also be done To accurate load, it can not meet above-mentioned absolute accuracy and the requirement of property as true as a die.
Summary of the invention
The present invention is to solve the above problems, the applying method for proposing a kind of threedimensional model radial force of ring-shaped work pieces is next quasi- Really, the load of the threedimensional model radial force of ring-shaped work pieces is easily and efficiently realized.
A kind of applying method of the threedimensional model radial force of ring-shaped work pieces, in ADAMS software to ring-shaped work pieces Threedimensional model applies radial force, which comprises the following steps:
Step 1, establishes the threedimensional model of ring-shaped work pieces, and be arranged after corresponding material properties and mesh-density to its into Row grid dividing generates tire flexible body file；
Step 2 extracts the coordinate and its serial number of grid node obtained after grid dividing；
Step 3 will be directed toward the edge power F to be applied at the grid node in the center of circle of ring-shaped work pieces using force resolution principle X, y-axis direction decomposed to obtain Fx and Fy, Fx=Fsin α, Fy=Fcos α,It is divided into positive and negative expression power Direction, x, y be grid node coordinate；
Step 4, the Fx and Fy obtained after the power of all grid nodes is decomposed are carried out summarizing arrangement, then be produced Node ID-power title-power numerical value table；
Node ID-power title-power numerical value table imported into threedimensional model and completes threedimensional model by step 5 The application of radial force.
The applying method of the threedimensional model radial force of ring-shaped work pieces provided by the invention, can also have the following features: Wherein, the threedimensional model of ring-shaped work pieces is established in step 1 using ABAQUS software.
The applying method of the threedimensional model radial force of ring-shaped work pieces provided by the invention, can also have the following features: Wherein, ring-shaped work pieces is tire.
The applying method of the threedimensional model radial force of ring-shaped work pieces provided by the invention, can also have the following features: Wherein, the load application position grid node of tire is only extracted in step 2.
The applying method of the threedimensional model radial force of ring-shaped work pieces provided by the invention, can also have the following features: Wherein, node ID-power title-power numerical value table is saved with the format of .txt.
The applying method of the threedimensional model radial force of ring-shaped work pieces provided by the invention, can also have the following features: Wherein, the radial force of step 5 is applied through ADAMS software to complete.
Invention action and effect
The applying method of the threedimensional model radial force of provided ring-shaped work pieces according to the present invention, due to by load to be applied Power is decomposed, while the power of decomposition being applied separately on the grid node of threedimensional model, completes ring-shaped work pieces radial force Application pass through subsequent secondary development and ADAMS software interface by the way that the power after decomposing is fabricated to the file of .txt format The efficiently load of quick radial force can be realized in connection.
Detailed description of the invention
Fig. 1 is the step schematic diagram of the applying method of the threedimensional model radial force of the ring-shaped work pieces of the embodiment of the present invention；
Fig. 2 is force resolution schematic diagram；And
Fig. 3 is node ID-power title-power numerical value table schematic diagram.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention Example combination attached drawing is applied to make the principle steps using effect of the applying method of the threedimensional model radial force of ring-shaped work pieces of the invention It is specifically described.
Embodiment
Fig. 1 is the step schematic diagram of the applying method of the threedimensional model radial force of the ring-shaped work pieces of the embodiment of the present invention.
As shown in Figure 1, applying process the following detailed description of specific load.
The first step establishes automobile tire threedimensional model in ABAQUS, by a series of setting work, such as material properties Setting, the setting etc. of mesh-density, and then obtain tire flexible body file, and saved with chetai.mnf format.
Second step carries out mesh point coordinate and node ID for obtained flexible body file in ABAQUS Work is extracted, finally saves the mesh point coordinate extracted and node ID with .rpt format.It opens after saving .rpt file, the inside contain the node coordinate value and deformed node coordinate value before deformation, delete deformed node and sit Scale value is only retained the node coordinate value before deformation, is then saved with .txt format.Then pass through " data-in EXCEL From text " and etc. the .txt file made is imported into EXCEL.Complete the table 1 of " node ID-node coordinate ".
Fig. 2 is force resolution schematic diagram.
Third step, the coordinate for having obtained grid node is one of committed step of the invention patent, as shown in Fig. 2, passing through Node coordinate value (x, y) can in the hope of the angle α of radial force F and y-axis to be applied,It can be to radial direction Power F carries out operation splitting, obtains Fx=Fsin α, Fy=Fcos α, x, y are the coordinate of grid node.This is that the invention patent is another A committed step.
4th step, repeats the above steps, and can decompose one by one uniformly distributed radial force to be applied, be finally obtained one The combination of the new power of group replaces original uniformly distributed radial force to be applied with this.And obtained power and table are decomposed by this Lattice 1 combine the table 2 for being fabricated to " node ID-power title-power numerical value ", then save as .txt file.
Fig. 3 is node ID-power title-power numerical value table schematic diagram.
5th step is opened the .txt file, is edited to it, adds upper " %C chetai " in the first row.Here % indicate: start to define a kind of new load working condition, C is indicated: application is load, and chetai is the customized mark of user Topic.It is finally saved with file.txt file, which is the file that can be realized in ADAMS, following Operation in can be called.Part screenshot is as shown in Figure 3.
In order to which how .txt file is attached by further description with the second development interface of ADAMS, below with Corresponding interface code has been write for the file of above-described embodiment:
The command window for calling computer, inputs following character:
adams2013flextk mnfload chetai.mnf new.mnf file.txt
Wherein:
Adams 2013-- starts adams2013
Flext-- starts the flextk module in adams2013
Mnfload-- calls the mnfload tool in adams2013, which is used to load be applied to finite element mould In type
The tire flexible body file established in ABAQUS before chetai.mnf--
New.mn-- is the model document for completing to generate after the order, and load is applied to finite element model by this document It is upper
The file containing load that file.txt-- has been created and kept before being
Finally, the extraction work of uniformly distributed radial force can be carried out in ADAMS after the completion of program operation above, it is final real The application of local radial power is completed in present ADAMS.
The effect and beneficial effect of embodiment
The applying method of the threedimensional model radial force of the ring-shaped work pieces according to provided by the present embodiment, due to by load to be applied Load forces are decomposed, while the power of decomposition being applied separately on the grid node of threedimensional model, and it is radial to complete ring-shaped work pieces The application of power is connect by the way that the power after decomposing to be fabricated to the file of .txt format by subsequent secondary development and ADAMS software The efficiently load of quick radial force can be realized in mouth connection.
In addition, node ID-node coordinate the table made is imported by the second development interface using ADAMS In ADAMS, more manual convenient and fast loading is operated, while accuracy and accuracy are also high.

Claims (6)

1. a kind of applying method of the threedimensional model radial force of ring-shaped work pieces, in ADAMS software to the three of ring-shaped work pieces Dimension module applies radial force, which comprises the following steps:
Step 1, establishes the threedimensional model of the ring-shaped work pieces, and corresponding material properties and mesh-density is arranged, and demonstrates net Grid dividing is carried out after the convergence of lattice to it, generates tire flexible body file；
Step 2 extracts the coordinate and its serial number of grid node obtained after grid dividing；
Step 3 will be directed toward the edge power F to be applied at the grid node in the center of circle of the ring-shaped work pieces using force resolution principle X, y-axis direction decomposed to obtain Fx and Fy, Fx=Fsin α, Fy=Fcos α,X, y is the grid section The coordinate of point, α are the angle of radial force F and y-axis；
Step 4, the Fx and Fy obtained after the power of all grid nodes is decomposed are carried out summarizing arrangement, then be produced Node ID-power title-power numerical value table；
The node ID-power title-power numerical value table is imported into the threedimensional model and completes described three by step 5 The application of the radial force of dimension module.
2. the applying method of the threedimensional model radial force of ring-shaped work pieces according to claim 1, it is characterised in that:
Wherein, the threedimensional model of the ring-shaped work pieces is established in step 1 using ABAQUS software.
3. the applying method of the threedimensional model radial force of ring-shaped work pieces according to claim 1, it is characterised in that:
Wherein, the ring-shaped work pieces is tire.
4. the applying method of the threedimensional model radial force of ring-shaped work pieces according to claim 3, it is characterised in that:
Wherein, grid node described in the load application position of the tire is only extracted in step 2.
5. the applying method of the threedimensional model radial force of ring-shaped work pieces according to claim 1, it is characterised in that:
Wherein, the node ID-power title-power numerical value table is saved with the format of .txt.
6. the applying method of the threedimensional model radial force of ring-shaped work pieces according to claim 1, it is characterised in that:
Wherein, the radial force of step 5 is applied through ADAMS software to complete.
CN201610592254.6A 2016-07-26 2016-07-26 The applying method of the threedimensional model radial force of ring-shaped work pieces Expired - Fee Related CN106227944B (en)

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CN110633533B (en) * 2019-09-19 2021-06-01 福州大学 Modal analysis finite element grid density optimization method and system for box type parts
CN112149250B (en) * 2020-09-21 2023-03-14 湖南江滨机器（集团）有限责任公司 Method and equipment for generating piston grid model

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101539959A (en) * 2009-04-24 2009-09-23 沈阳工业大学 Design method of parameterized part of wind generating set
CN103366049A (en) * 2013-06-25 2013-10-23 沈阳华创风能有限公司 Computing method for hub ultimate strength of wind turbine generator system
CN104484526A (en) * 2014-12-16 2015-04-01 中国第一汽车股份有限公司 Method for improving finite element analysis accuracy of transmission case

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Publication number Priority date Publication date Assignee Title
US7082816B2 (en) * 2003-10-20 2006-08-01 Michelin Recherche Et Technique S.A. Prediction and control of mass unbalance and high speed uniformity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101539959A (en) * 2009-04-24 2009-09-23 沈阳工业大学 Design method of parameterized part of wind generating set
CN103366049A (en) * 2013-06-25 2013-10-23 沈阳华创风能有限公司 Computing method for hub ultimate strength of wind turbine generator system
CN104484526A (en) * 2014-12-16 2015-04-01 中国第一汽车股份有限公司 Method for improving finite element analysis accuracy of transmission case

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