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Parametric modeling method of rigid-flexible coupled model

A technology of parametric modeling and rigid-flexible coupling, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as the inability to accurately establish rigid-flexible coupling dynamics simulation models, and achieve good engineering application value , improved modeling efficiency, efficient and reliable solution effects

Active Publication Date: 2015-10-07
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0003] The present invention aims to solve the problem that the rigid-flexible coupling dynamics simulation model cannot be established efficiently and accurately in the existing technology, and proposes a parametric modeling method for the rigid-flexible coupling model

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[0040] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the specific content of the present invention will be further described below with reference to the accompanying drawings, but the specific embodiments of the present invention are not limited thereto.

[0041] The technical scheme of the present invention provides a flexible body parametric modeling method for dynamic simulation, and the flowchart is as figure 1 As shown, including the following steps:

[0042] (1) In the dynamic analysis software ADAMS, initialize the simulation environment, establish a rigid body part model, impose relevant constraints and drives on the rigid body part model including fixed joints, moving joints, and rotating joints, and convert the rigid body model into editable commands file;

[0043] (2) Establish an APDL macro file for flexible body modeling in a multi-body system. The file includes flexible body finite element modeling, finite element...

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Abstract

The invention discloses a parametric modeling method of a rigid-flexible coupled model. The method includes the steps of 1, establishing a rigid component model, 2, establishing an APDL macro file of a flexible body model, 3, establishing a rigid-flexible coupled system parametric graphical user interface, 4, inputting flexible body parameters in the interface and reading, altering and updating the APDL macro file, 5, executing the updated APDL macro file to build the flexible body model, 6, inputting rigid body model parameters, reconstructing a rigid body model, importing a flexible body modal neutral file and generating a command file containing a rigid-flexible coupled dynamics simulation model, 7, importing the command file, loading a virtual prototype model, conducting dynamics simulation analysis and outputting a simulation result and 8, outputting the optimum simulation data and storing a data file according to the simulation result. According to the rigid-flexible coupled model parametric modeling method, automatic creation of the parametric modeling of a flexible body and the rigid-flexible coupled model can be achieved, manual intervention is not needed in the whole process, the problem that it is difficult to parameterize the flexible body in the engineering practice is solved, the modeling efficiency is improved, and the method has very good engineering application value.

Description

Technical field [0001] The invention belongs to the field of mechanical engineering, and particularly relates to a parametric modeling method of a rigid-flexible coupling model. technical background [0002] Rigid-flexible coupling system dynamics refers to the use of flexible multi-body models instead of rigid-body models when the influence of object deformation on motion in a multi-body system cannot be ignored, and the dynamics of flexible multi-body systems that consider the effect of rigid-flexible coupling, mainly studying flexible bodies The interaction or mutual coupling between its deformation and its large-scale spatial motion, and the dynamic effects caused by this coupling. With the development of the national economy and national defense technology, for many engineering problems, the simple multi-rigid body system model is far from reality, and cannot meet the engineering accuracy requirements. It is necessary to consider the interaction of the large-scale movement o...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘夫云刘海潮杨孟杰杨运泽伍建伟汪沙娜张骥
Owner GUILIN UNIV OF ELECTRONIC TECH
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