Cyclic symmetry structure frequency response analysis method of additional dry friction damper

A dry friction damper, cyclic symmetry technology, applied in the field of structural vibration reduction mechanics calculation, can solve problems such as inability to save storage resources and low accuracy

Pending Publication Date: 2020-10-27
TAIZHOU UNIV
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for analyzing the frequency response of a cyclically symmetrical structure with an additional dry fricti

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
  • Cyclic symmetry structure frequency response analysis method of additional dry friction damper
  • Cyclic symmetry structure frequency response analysis method of additional dry friction damper
  • Cyclic symmetry structure frequency response analysis method of additional dry friction damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The invention provides a technical solution: a method for analyzing frequency response of a cyclically symmetrical structure with an additional dry friction damper. The specific operation steps of the method for analyzing the frequency response of a cyclically symmetrical structure with an additional dry friction damper are as follows;

[0052] A method for analyzing the frequency response of a cyclically symmetrical structure with an additional dry fric...

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 belongs to the technical field of structural vibration reduction dynamics calculation methods, in particular to a cyclic symmetry structure frequency response analysis method of an additional dry friction damper. The cyclic symmetry structure frequency response analysis method of the additional dry friction damper comprises the following specific operation steps: S1, establishing a structural member and damper sector kinetic equation, s2, establishing a sector finite element model; obtaining a sector quality and rigidity matrix; s3, performing degree-of-freedom compression on thesector model by applying a modal synthesis method; s4, adding a complex constraint boundary condition to the compressed model; s5, performing time domain representation of dry friction force; S6, solving a nonlinear equation set by using a mixed time-frequency method. According to the cyclic symmetry structure frequency response analysis method of the additional dry friction damper, storage resources and calculation time are greatly saved, the calculation time saving ratio is equivalent to the saving ratio of the storage resources, the number of nonlinear degrees of freedom participating in iteration is reduced, the convergence risk is effectively reduced, and an efficient and robust frequency response solving algorithm is formed.

Description

technical field [0001] The invention relates to the technical field of dynamic calculation methods for structural vibration reduction, in particular to a frequency response analysis method for a cyclically symmetrical structure with an added dry friction damper. Background technique [0002] The aviation industry usually makes rotating structural parts into thin-walled structures. Thin-walled structures are prone to overall large-scale vibration under dynamic load excitation, resulting in large dynamic stress, premature initiation of fatigue cracks, and sudden fracture in a specific frequency range. The failure of power or transmission critical parts will cause accidents. The introduction of dry friction can significantly suppress the vibration amplitude of thin-walled rotating components. The vibration reduction mechanism is: when the structure vibrates greatly, the damping generated by the relative motion between the friction contact surfaces effect to achieve the purpose ...

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): G06F30/23G06F30/17G06F111/10G06F119/14
CPCG06F30/17G06F30/23G06F2111/10G06F2119/14
Inventor 蔺彦虎秋朋园张靖
Owner TAIZHOU 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