Development and analyses of a lever system for a newly designed self-equalising thrust bearing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F22%3A43965521" target="_blank" >RIV/49777513:23640/22:43965521 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28110/22:63552618

Výsledek na webu

<a href="https://doi.org/10.1016/j.engfailanal.2022.106215" target="_blank" >https://doi.org/10.1016/j.engfailanal.2022.106215</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2022.106215" target="_blank" >10.1016/j.engfailanal.2022.106215</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Development and analyses of a lever system for a newly designed self-equalising thrust bearing

Popis výsledku v původním jazyce

Thrust bearings are undoubtedly one of the essential parts of turbines and compressors. However, there are many cases in which asymmetric load occurs on the bearings due to e.g. thermal deformations, production inaccuracies or a simple deflection of the shaft. The presented research deals with some basic steps involved in comprehensive research related to developing a new selfequalising thrust bearing. It focuses on the design of its most crucial part - lever, which is responsible for the proper equalising functionality. The study aimed to design a new type of lever geometry, create its numerical model, and, through numerical analysis and calculations, predict its useability in real conditions. According to von Mises hypothesis, stresses were evaluated, as well as contacts and stiffness according to Hertz’s theory. The lever was modelled in two sizes, which suit the bearings representing the most often used types in powerful machines. For the levers’ design and production, the steel 34CrNiMo6 has been used in a refined state with a yield strength of 900 MPa. The results achieved within the experimental static tests and verifications in operating conditions confirmed the correctness of the final geometry design of the levers, its sufficient stiffness, as well as good functionality of the thrust bearing and its reliability.

Název v anglickém jazyce

Development and analyses of a lever system for a newly designed self-equalising thrust bearing

Popis výsledku anglicky

Thrust bearings are undoubtedly one of the essential parts of turbines and compressors. However, there are many cases in which asymmetric load occurs on the bearings due to e.g. thermal deformations, production inaccuracies or a simple deflection of the shaft. The presented research deals with some basic steps involved in comprehensive research related to developing a new selfequalising thrust bearing. It focuses on the design of its most crucial part - lever, which is responsible for the proper equalising functionality. The study aimed to design a new type of lever geometry, create its numerical model, and, through numerical analysis and calculations, predict its useability in real conditions. According to von Mises hypothesis, stresses were evaluated, as well as contacts and stiffness according to Hertz’s theory. The lever was modelled in two sizes, which suit the bearings representing the most often used types in powerful machines. For the levers’ design and production, the steel 34CrNiMo6 has been used in a refined state with a yield strength of 900 MPa. The results achieved within the experimental static tests and verifications in operating conditions confirmed the correctness of the final geometry design of the levers, its sufficient stiffness, as well as good functionality of the thrust bearing and its reliability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ENGINEERING FAILURE ANALYSIS

ISSN

1350-6307

e-ISSN

1873-1961

Svazek periodika

137

Číslo periodika v rámci svazku

JUL 2022

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

nestrankovano

Kód UT WoS článku

000799703300002

EID výsledku v databázi Scopus

2-s2.0-85126868865