Method for solving linear flutter speed of three-dimensional wing based on multi-body system transfer matrix method

A transfer matrix, multi-body system technology, applied in instruments, electrical digital data processing, geometric CAD, etc., can solve the problems of low efficiency and slow speed in solving the wing vibration characteristics

Active Publication Date: 2020-03-27
YANGZHOU UNIV
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and proposes a method for solving the linear flutter velocity of a three-dimensional wing based on the mu...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for solving linear flutter speed of three-dimensional wing based on multi-body system transfer matrix method
  • Method for solving linear flutter speed of three-dimensional wing based on multi-body system transfer matrix method
  • Method for solving linear flutter speed of three-dimensional wing based on multi-body system transfer matrix method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0124] 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.

[0125] In the prior art, the multibody system transfer matrix method (MSTMM) was established by Academician Rui Xiaoting and his team for multibody dynamics analysis. This method can realize general multi-body system dynamics research, and its high computational efficiency can be easily applied in engineering. The invention is applied to the calculation of the vibration characteristics of the airfoil, which can realize the fast modeling and fast calculation of the aeroelastic model of the airfoil.

[0126] The invention uses MSTMM to calculate the vibration characteristics of the three-dimensional wing, and according to the wing vibration shape calculated by the MSTMM, proposes the idea of ​​mo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for solving the linear flutter speed of a three-dimensional wing based on a multi-body system transfer matrix method. The method comprises the following steps: deriving a bending-torsion coupling beam transfer matrix of the wing based on the multi-body system transfer matrix method; establishing a total transfer equation of the wing, and solving and obtaining the inherent frequency and the vibration mode of the wing; according to the Theodorsen unsteady aerodynamic force theory, establishing the relation between wing vibration displacement and aerodynamic force; establishing a body dynamics equation of the wing, and converting the body dynamics equation into a frequency domain to obtain a flutter frequency domain model of the wing; and performing frequencydomain solving on the wing flutter frequency domain model to obtain the flutter speed of the wing. The method can achieve the quick solving of the flutter speed of the wing.

Description

technical field [0001] The invention belongs to the technical field of aeroelastic simulation, and in particular relates to a method for solving the linear flutter velocity of a three-dimensional wing based on a multi-body system transfer matrix method. Background technique [0002] With the continuous development of the aviation industry and the continuous improvement of the flight speed of the aircraft, the aeroelasticity problem has been paid more and more attention by people. In the early days of the development of aircraft design technology, there were many serious accidents caused by aeroelasticity. After decades of development, aeroelasticity has become more and more mature, and the corresponding analysis methods have played an important role in the field of aerospace. Every step in the research of aeroelasticity can greatly promote the development of aviation technology, the understanding of aeroelasticity is also deepening, and the ability to solve aeroelasticity i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F30/15G06F30/28G06F119/14
CPCY02T90/00
Inventor 陈东阳朱卫军顾超杰孙振业曹九发李迺璐杨华纪智谢涛
Owner YANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap