CN103699704A - Simulation analysis method of mechanical system - Google Patents
Simulation analysis method of mechanical system Download PDFInfo
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- CN103699704A CN103699704A CN201210366113.4A CN201210366113A CN103699704A CN 103699704 A CN103699704 A CN 103699704A CN 201210366113 A CN201210366113 A CN 201210366113A CN 103699704 A CN103699704 A CN 103699704A
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Abstract
The invention discloses a simulation analysis method of a mechanical system. The method comprises the following steps: S1, establishing the attribute of a mechanical system model through Hypermesh software; S2, meshing the mechanical system model through the Hypermesh software; S3, defining a rigid unit of the mechanical system model through the Hypermesh software, and performing constraint setting on the mechanical system model; S4, defining the attribute of a flexible body corresponding to the mechanical system model; S5, forming a flexible body file corresponding to the mechanical system model through the Hypermesh software; S6, importing the flexible body file into ADAMS (automatic dynamic analysis of mechanical systems) software, and performing simulation analysis on the mechanical system through the ADAMS software. According to the simulation analysis method of the mechanical system, the flexible body file of the mechanical system model is formed through the Hypermesh software and can be established more easily, and the simulation analysis working efficiency of the mechanical system is greatly improved.
Description
Technical field
The present invention relates to mechanical designing technique field, relate in particular to a kind of dynamic simulation analysis of mechanical system method.
Background technology
Machinery system dynamics auto Analysis ADAMS can carry out statics, kinematics and dynamic analysis to virtual machine system, be widely used in as in the research and development design process of the complex mechanical systems such as vehicle, can save research and development time, reduction expense and risk, the quality of elevating gear system.Along with deepening continuously of analytical technology, ADAMS has not only been used to aspect kinematics and the emulation of rigid multibody dynamics aspect, and the model transition constantly combining to rigid body and flexible body.The main method of current generation flexible body has two kinds, and a kind of is, by ADAMS self, rigid body is converted into beformable body, and the second is to utilize finite element software ANSYS to generate neutral mode file, then imports in ADAMS environment, and mechanical system is carried out to simulation analysis.But the modeling ability of ADAMS is poor, grid is divided uncontrollable, can only generate simple flexible body file; And ANSYS Software Create flexible body file process is complicated, and a little less than grid division ability.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: a kind of dynamic simulation analysis of mechanical system method is provided, the foundation of flexible body file when carrying out simulation analysis is simply saved time, greatly improve the efficiency of dynamic simulation analysis of mechanical system.
(2) technical scheme
For addressing the above problem, the invention provides a kind of dynamic simulation analysis of mechanical system method, it is characterized in that, comprise the following steps:
S1: the attribute of setting up mechanical system model by Hypermesh software;
S2: utilize described Hypermesh software to carry out grid division to described mechanical system model;
S3: by the rigid element of mechanical system model described in described Hypermesh software definition and described mechanical system model is retrained to setting;
S4: the attribute that defines the flexible body that described mechanical system model is corresponding;
S5: utilize described Hypermesh software to form the flexible body file corresponding with described mechanical system model;
S6: described flexible body file is imported to ADAMS software, and by described ADAMS software, mechanical system is carried out to simulation analysis.
Preferably, the attribute of described mechanical system model comprises grid property, material properties and the cell attribute of mechanical system model.
Preferably, the attribute of described definition flexible body comprises: the modal synthesis method attribute that defines described flexible body.
Preferably, the attribute of described definition flexible body comprises: the hyperelement border degree of freedom attribute that defines described flexible body.
Preferably, described flexible body file is mnf file.
(3) beneficial effect
The present invention has overcome the weakness of ADAMS software self modeling and grid division, also without loaded down with trivial details settings of Software Create flexible body file such as ANSYS, make the dynamic analysis of complex parts under the ADAMS environment possibility that becomes, by Hypermesh software, form the flexible body file of mechanical system model, make the foundation of flexible body file no longer complicated time-consuming, part from the part of simple shape to shape relative complex, all become and more easily realize, and greatly improve the work efficiency of dynamic simulation analysis of mechanical system.
Accompanying drawing explanation
Fig. 1 is the steps flow chart schematic diagram of embodiment of the present invention method;
Figure 2 shows that the connecting-piece structure model of setting up in Hypermesh software;
Figure 3 shows that the connecting-piece structure model shown in Fig. 2 is carried out to the model obtaining after grid division.
embodiment
Below in conjunction with drawings and Examples, that the present invention is described in detail is as follows.
As shown in Figure 1, the present embodiment has been recorded a kind of dynamic simulation analysis of mechanical system method, comprises the following steps:
S1: the attribute of setting up mechanical system model by Hypermesh software;
Be illustrated in figure 2 the connecting-piece structure model of setting up in Hypermesh software;
S2: utilize described Hypermesh software to carry out grid division to described mechanical system model;
As shown in Figure 3, for the connecting-piece structure model to shown in Fig. 2 carries out the model obtaining after grid division; What in the present embodiment, adopt is that entity grid is divided, and can also be tetrahedral grid or hexahedral mesh division in other embodiments of the invention;
S3: by the rigid element of mechanical system model described in described Hypermesh software definition and described mechanical system model is retrained to setting;
S4: the attribute that defines the flexible body that described mechanical system model is corresponding;
S5: utilize described Hypermesh software to form the flexible body file corresponding with described mechanical system model;
S6: described flexible body file is imported to ADAMS software, and by described ADAMS software, mechanical system is carried out to simulation analysis.
In the present embodiment, the attribute of described mechanical system model comprises grid property, material properties and the cell attribute of mechanical system model.
In the present embodiment, the attribute of described definition flexible body comprises: the modal synthesis method attribute and the hyperelement border degree of freedom attribute that define described flexible body.The modal synthesis method attribute that wherein defines described flexible body defines flexible body is CB(constraint mode) or CC(Free Modal); The hyperelement border degree of freedom attribute that defines described flexible body retrains which degree of freedom of flexible body, comprises three direction translationals and three direction rotational freedoms.
In the present embodiment, described flexible body file is mnf file.
The present invention forms the flexible body file of mechanical system model by Hypermesh software, make the foundation of flexible body file no longer complicated time-consuming, part from the part of simple shape to shape relative complex, all becomes and more easily realizes, and greatly improves the work efficiency of dynamic simulation analysis of mechanical system.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (5)
1. a dynamic simulation analysis of mechanical system method, is characterized in that, comprises the following steps:
S1: the attribute of setting up mechanical system model by Hypermesh software;
S2: utilize described Hypermesh software to carry out grid division to described mechanical system model;
S3: by the rigid element of mechanical system model described in described Hypermesh software definition and described mechanical system model is retrained to setting;
S4: the attribute that defines the flexible body that described mechanical system model is corresponding;
S5: utilize described Hypermesh software to form the flexible body file corresponding with described mechanical system model;
S6: described flexible body file is imported to ADAMS software, and by described ADAMS software, mechanical system is carried out to simulation analysis.
2. dynamic simulation analysis of mechanical system method as claimed in claim 1, is characterized in that, the attribute of described mechanical system model comprises grid property, material properties and the cell attribute of mechanical system model.
3. dynamic simulation analysis of mechanical system method as claimed in claim 1, is characterized in that, the attribute of described definition flexible body comprises: the modal synthesis method attribute that defines described flexible body.
4. the dynamic simulation analysis of mechanical system method as described in claim 1 or 3, is characterized in that, the attribute of described definition flexible body comprises: the hyperelement border degree of freedom attribute that defines described flexible body.
5. dynamic simulation analysis of mechanical system method as claimed in claim 1, is characterized in that, described flexible body file is mnf file.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210366113.4A CN103699704A (en) | 2012-09-27 | 2012-09-27 | Simulation analysis method of mechanical system |
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| CN201210366113.4A CN103699704A (en) | 2012-09-27 | 2012-09-27 | Simulation analysis method of mechanical system |
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| CN103699704A true CN103699704A (en) | 2014-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106326502A (en) * | 2015-06-16 | 2017-01-11 | 上汽通用五菱汽车股份有限公司 | Computation method for static rigidity of support |
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| US7272801B1 (en) * | 2003-03-13 | 2007-09-18 | Coventor, Inc. | System and method for process-flexible MEMS design and simulation |
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