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Object-oriented nonlinear and non-causal modeling and simulation method for rotor dynamics system

A technology of rotor dynamics and simulation methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low efficiency and unreusable program forms, and achieve the effect of convenient analysis methods

Inactive Publication Date: 2013-02-06
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The research of finite element method can be carried out using commercial software such as Ansys, Abaqus, etc.; but the use of transfer matrix method to analyze the concentrated parameter model of the rotor requires manual programming in languages ​​such as C or Matlab. For different rotor systems, the written program form Different leads to inability to reuse and lower efficiency

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  • Object-oriented nonlinear and non-causal modeling and simulation method for rotor dynamics system
  • Object-oriented nonlinear and non-causal modeling and simulation method for rotor dynamics system
  • Object-oriented nonlinear and non-causal modeling and simulation method for rotor dynamics system

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention will be further described as follows:

[0020] as attached figure 1 To attach Figure 6 As shown, the modeling and simulation method described in the present invention is based on the object-oriented non-causal multi-domain modeling language Modelica, and the rotor dynamics system simulation model is written using the modeling language Modelica, and the rotor dynamics system simulation model is composed of components and faults It is built, and the components include the turntable assembly 1, the shaft section assembly 2 and the bearing assembly 3. The turntable assembly, the shaft section assembly and the bearing assembly respectively include two node elements 5, and the faults include crack faults 6, rubbing faults 7 and loose foundation Fault 8. The node element includes potential variable and flow variable, the potential variable is the radial displacement of the rotor at the node element, and t...

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Abstract

The invention relates to the technical field of simulated modeling of a rotor dynamics system and in particular to an object-oriented nonlinear and non-causal modeling and simulation method for the rotor dynamics system. The modeling and simulation method is based on an object-oriented non-causal multi-field modeling language Modelica; the modeling language Modelica is used for writing the simulated modeling program of the rotor dynamics system; the simulated modeling of the rotor dynamics system is formed by components and faults; the components comprises a turntable component, shaft section components and a bearing component; the turntable component, the shaft section components and the bearing component comprise two connector elements respectively; the faults comprise crack fault, rubbing fault and foundation loosening fault; and by the modeling and simulation method, the rotor dynamics systems with various structures can be modeled, system characteristics and working condition of the rotor dynamics systems can be truly reflected, the faults such as crack, rubbing and foundation loosening can be introduced to perform system analysis, and a convenient analysis measure is provided for engineering technical persons and scientific researchers.

Description

[technical field] [0001] The invention relates to the technical field of rotor dynamic system simulation modeling, in particular to an object-oriented nonlinear non-causal modeling and simulation method of rotor dynamic system. [Background technique] [0002] Rotor dynamics is a research field for rotating machinery widely used in various fields of industry, national defense and people's livelihood. The research directions include dynamic response, vibration, fault diagnosis, etc. Its purpose and task are to optimize the design of rotating machinery and improve efficiency and reduce failures, etc. The general analysis methods of rotor dynamics include the transfer matrix method and the finite element method. Among them, the finite element method analysis of the rotor system was first seen in Ruhl's "Afinite element model for distributed parameter turborotor systems", and the transfer matrix method analysis of the rotor system was first seen in Prohl's The article "A general...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李明孟光李鸿光刘兴星白晖宇朱瑞
Owner SHANGHAI JIAO TONG UNIV
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