Flutter critical point prediction method and device

A prediction method and flutter technology, which is applied in the field of wind tunnel testing, can solve the problems of large dispersion of damping ratio identification and inability to accurately obtain flutter boundaries, and achieve the effect of improving inaccurate prediction

Inactive Publication Date: 2020-01-07
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large spread of the damping ratio identi

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
  • Flutter critical point prediction method and device
  • Flutter critical point prediction method and device
  • Flutter critical point prediction method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0045] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in th...

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 embodiment of the invention provides a flutter critical point prediction method and device. The flutter critical point prediction method comprises the following steps: acquiring output response signals, and carrying out ensemble mean calculation on the output response signals, so that a random attenuation label of the output response signals is obtained; according to the random attenuation label, obtaining a target characteristic equation coefficient of the output response signals through fitting calculation; and according to the target characteristic equation coefficient, carrying out calculation to acquire flutter critical points of the output response signals. The flutter critical point prediction method and device provided by the embodiment of the invention has the advantage that aflutter boundary in a wind tunnel experiment can be accurately predicted.

Description

technical field [0001] The present application relates to the technical field of wind tunnel testing, in particular, to a flutter critical prediction method and device. Background technique [0002] At present, in the process of wind tunnel test, the most commonly used criterion for judging the flutter boundary is realized by monitoring the damping ratio. However, due to the large spread of damping ratio identification, the flutter boundary cannot be accurately obtained. [0003] In view of this, how to provide a method to accurately obtain the flutter boundary is a problem that needs to be solved at present. Contents of the invention [0004] The present application provides a flutter critical prediction method, device, computer equipment and readable storage medium. [0005] In a first aspect, the present application provides a critical flutter prediction method applied to a computer device, the method comprising: [0006] Obtaining an output response signal, and perf...

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): G01M9/02G01M9/08G06F17/16G06F17/13
CPCG01M9/02G01M9/08G06F17/13G06F17/16
Inventor 郭洪涛路波吴军强余立吕彬彬寇西平闫昱曾开春杨兴华张昌荣查俊雷鹏轩郭鹏刘大伟马晓永
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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