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Rudder system vibration characteristic prediction method based on multi-body system transfer matrix method

A transfer matrix and multi-body system technology, applied in instrumentation, electrical digital data processing, geometric CAD, etc., can solve problems such as low computational efficiency, complex theoretical background, and excessive number of units

Pending Publication Date: 2020-02-25
YANGZHOU UNIV
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Problems solved by technology

And the finite element method is used to model the simplified system, but there are still too many elements, high matrix order, low calculation efficiency, complex theoretical background, and cumbersome derivation process

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  • Rudder system vibration characteristic prediction method based on multi-body system transfer matrix method
  • Rudder system vibration characteristic prediction method based on multi-body system transfer matrix method
  • Rudder system vibration characteristic prediction method based on multi-body system transfer matrix method

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[0087] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0088] In the prior art, Academician Rui Xiaoting and his team established a new method of multi-body system dynamics - multi-body system transfer matrix method (MSTMM). This method has successively realized the inherent vibration characteristics and dynamic response of linear multi-body systems, as well as nonlinear, time-varying, large-motion, controlled, and general multi-body system dynamics studies, without the need for the overall dynamics equation of the system, with a high degree of stylization and systematic The low matrix order can realize fast modeling and fast calculation of complex systems. In order to realize fast dynamic modeling and vibration characteristics of complex multi-rig...

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Abstract

The invention discloses a rudder system vibration characteristic prediction method based on a multi-body system transfer matrix method, and the method comprises the following steps: carrying out the modeling of a rudder system based on the multi-body system transfer matrix method, and obtaining a kinetic model of the rudder system; determining a coupling beam transfer equation considering rudder blade bending torsion coupling vibration and axial vibration according to the kinetic model of the rudder system; determining a total transfer matrix and a total transfer equation of the system according to the transfer matrix and the transfer equation of each element in the rudder system; and solving the total transfer equation to obtain the vibration characteristics of the rudder system. The structural details of the rudder system are fully considered, the calculation efficiency is high, the simulation precision is high, and certain practicability is achieved; meanwhile, a reference is provided for rapid modeling and simulation of engineering similar multi-rigid-flexible coupling body system dynamics problems.

Description

technical field [0001] The invention belongs to the technical field of multi-body system dynamics, and in particular relates to a vibration characteristic prediction method of a rudder system based on a multi-body system transfer matrix method. Background technique [0002] In engineering practice, ship components such as the hydrofoil of the hydrofoil boat, the elevator and stern rudder in the submarine are complex multi-rigid and flexible body dynamic systems. Damage, or continuous weak vibration phenomenon induces water noise, reducing the concealment of underwater vehicles. The first step in the fluid-structure interaction simulation of these structural systems is to obtain the vibration characteristics of the structural systems efficiently and accurately. Usually, when mechanical methods calculate the vibration characteristics of a multi-rigid-flexible coupling system, it is necessary to establish the overall dynamic equation of the system, which not only needs to solv...

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Application Information

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IPC IPC(8): G06F30/15G06F119/14
CPCY02T90/00
Inventor 陈东阳顾超杰朱卫军杨华李迺璐孙振业曹九发杨俊伟刘嘉颖
Owner YANGZHOU UNIV
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