Coupling analysis of tribological and dynamical behavior for a thermal turbulent fluid lubricated floating ring bearing-rotor system at ultra-high speeds

Dynamic stability of unbalance-induced vibration in a turbocharger rotor-bearing system with the nonlinear effect of thermal turbulent lubricating fluid-film

Role of dynamic unbalance in dynamics of turbocharger rotors

Abstract. In the complex environment of the battlefield and dust weather, hard objects including birds, bullets, sand and others will
inevitably cause impact damage to the compressor blades of turboshaft
engines. The damage will further result in fatigue vibration of the gas
generator rotor and catastrophic accidents such as excessive engine
vibration and even crash. The relation between oil film clearance of dampers and damping of rotor systems as well as the damping and vibration amplitude of
a rotor system are analyzed. The functional relation between oil film
clearance and vibration amplitude is derived. Taking the gas generator rotor
of a certain turboshaft engine as an example, the rotor dynamic model of a gas generator rotor with oil film bearing clearance is constructed, and the
vibration response of the rotor system under different oil film clearances
is analyzed. A new type of squeeze film damper (SFD) structure with
piezoelectric-driven split pads is innovatively designed, and the vibration control system of the gas generator rotor is built. In addition, experimental research on rotor fault vibration control under different oil
film clearances is carried out. The results show that, within a certain range, when oil film clearance decreases, amplitude will decrease. Under the
experimental conditions, when the driving voltage of the piezoelectric
actuator is adjusted from 0 to 70 V, the oil film clearance decreases from
156 to 118 µm. Then, the vibration amplitude decreases and
gradually reaches stability after 0.036 s, and the vibration amplitude of
the rotor system decreases by 12 %. When the driving voltage of the
piezoelectric actuator is adjusted to 150 V, the oil film clearance
decreases to 76 µm, and the vibration amplitude of the rotor system
decreases by 28 %. When the new SFD adopts a piezoelectric-driven split-pad structure, the structure can adjust quickly the oil film clearance
online so as to control the vibration of the rotor system. The research results can provide a technical reference for the vibration control of turboshaft
engine rotor systems.


/pdf/study-on-the-vibration-control-method-of-a-turboshaft-engine-1h6h9e0s.pdf

Study on the vibration control method of a turboshaft engine rotor based on piezoelectric squeeze film damper oil film clearance

The inlet oil temperature of the rotor system with high-speed and light-load turbocharger will change during operation, which will change the vibration characteristics of the rotor system and even ...

Effect of the inlet oil temperature on vibration characteristics of the high-speed turbocharger rotor system:

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Guangfu Bin

Author Tools

Chat about Author

Papers

Effect of the inlet oil temperature on vibration characteristics of the high-speed turbocharger rotor system: