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Wyszukujesz frazę "vibration car" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Diagnostics of rolling bearing by vibration analysis
Diagnozowanie łożysk tocznych metodą analizy drgań
Autorzy:
Wojnar, G.
Łazarz, B.
Stanik, Z.
Powiązania:
https://bibliotekanauki.pl/articles/327196.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
łożysko
diagnostyka
drgania
samochód
koło jezdne
bearing
diagnostic
vibration car
Opis:
The bearings of wheels of carriageable vehicles with regard on disastrous state of roads in east Europe undergo accelerated waste what often it leads in consequence to damages different elements and threatens the safety of drive. Frequency analysis of vibroacoustical signals for diagnostics of bearing failure and wear are shown. Special focus is laid on typical faults (outer race, wear of surface). Axial vibrations have been recorded on bearing pivot at a different speed of carriageable wheels. Proposed methods are very sensitive to the development of bearings failure and wear.
W pracy przedstawiono metodę wykrywania zużycia oraz lokalnego uszkodzenia bieżni zewnętrznej łożysk nie napędzanych kół jezdnych pojazdu samochodowego. Analizom poddawano uzyskane na podstawie eksperymentów czynnych sygnały przyspieszeń drgań wzdłużnych czopa łożyskowego. Zaproponowana w pracy metoda okazała się być bardzo wrażliwa na zużycie oraz lokalne uszkodzenie bieżni zewnętrznej łożysk.
Źródło:
Diagnostyka; 2006, 3(39); 7-11
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of parameters of forms of bending oscillations of a body by results of vibrating tests with application of the theory of optimum filtration and linear regression models
Ocena parametrów form drgań zginających pudła wagonu na podstawie wyników badań wibracji z zastosowaniem teorii optymalnej filtracji i modeli regresji liniowej
Autorzy:
Lyapshin, K.
Vuchetich, I.
Powiązania:
https://bibliotekanauki.pl/articles/374755.pdf
Data publikacji:
2010
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
samochód osobowy
nadwozie samochodowe
drgania pojazdu
filtr nierekursywny
transformata Fouriera
model liniowej regresji
car
car body
vibration of car
nonrecursive filter
Fourier transformation
linear regression model
Opis:
Three different passenger car bodies' vibration tests were carried out. During the tests simultaneously were register accelerations, body middle displacements and strength from vibrator to a body. On processing of testing signal was decrease its sampling frequency and used nonrecursive filter with Fourier transformation. Signal parameter estimation for first self frequency of bending vibration determination was carried out with four linear regression models according to quadratic mean criteria with pass from discrete to continuous model. Was carried out each model estimation results analyses and did conclusions about processing methods error and noise attend in measurement system.
Źródło:
Transport Problems; 2010, 5, 2; 13-19
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of dynamic properties and movement safety of bogies with diagonal links and rubber-metal vibration absorbers between the rubbing elements of freight cars
Autorzy:
Karassayeva, Assel
Adilkhanov, Yerzhan
Sekerova, Sholpan
Japayev, Saduakhas
Zhauyt, Algazy
Zhunisbek, Seitbek
Tergemes, Kazhybek
Powiązania:
https://bibliotekanauki.pl/articles/1833774.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
freight car
qualities
CSM
polymer
vibration damping
Opis:
This article aims to study experimentally the dynamic properties and traffic safety actions for gondola cars with bogies with diagonal links, operated on the territory of the Republic of Kazakhstan. The main results obtained during tests of gondola cars on bogie with diagonal links when they move along straight and curved sections as well as on switches are presented. The estimation of: dynamics coefficients, stability margin coefficients against derailment, lateral forces transmitted from the wheel to the rail, ratio of frame forces to a static load from the wheelset on the rails, and accelerations are made. The paper analyses the simulation of a polymer layer of rubber vibration absorber, to be installed between the rubbing surfaces, such as the link side of frame axle unit, and host unit is open-bearing, with lateral support of the three-piece freight car bogies, operating on the territory of the Commonwealth of Independent States. The model developed in this article consists of a rheological model of a Maxwell cell, a Fancher spring and an element which has the function of non-linearity. The simulation model can be used to study the characteristics of vibration dampers, gaskets and other power elements that have polymer properties and are installed at other types of transport and not only.
Źródło:
Journal of Machine Engineering; 2021, 21, 3; 124--143
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on structure and directional distribution of vibration generated by engine in the location where vibrations penetrate the human organism
Badania struktury i rozkładu kierunkowego drgań pochodzących od silnika w miejscach wnikania do ciała kierowcy
Autorzy:
Burdzik, R.
Powiązania:
https://bibliotekanauki.pl/articles/329178.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
vibration propagation
vibration structure
car vehicle
propagacja drgań
struktura drgań
pojazd samochodowy
Opis:
The paper presents the results of investigation on directional distribution of vibration generated by engine. The vibration are strongly correlated to comfort and safety of driving. The results of the research enable analyzing the vibration propagation from engine to human body. The structures and directional distribution of the vibrations have been registered in the location where vibrations penetrate the human organism.
W artykule przedstawiono wyniki badań kierunkowego rozkładu drgań generowanych przez silnik pojazdu na postoju. Komfort i bezpieczeństwo jazdy są ściśle powiązane z drganiami pojazdu. Uzyskane wyniki badań umożliwiają precyzyjną analizę propagacji drgań od silnika do organizmu człowieka. Drgania rejestrowano w 3 osiach w miejscach konstrukcyjnych, w których drgania przenoszone są na ciało człowieka.
Źródło:
Diagnostyka; 2013, 14, 2; 57-61
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Frequency analysis of vertical vibrations acting on a baby transported in a child car seat
Autorzy:
Więckowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/244973.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
baby in a car seat
vibration impact
ride comfort
human body vibration
Opis:
The biggest dangers that may result from human exposure to vibrations caused by vehicle movement occur in automotive transport [6]. The vibrations experienced during vehicle ride may cause a variety of pathological symptoms arising in people. The adverse health effects may also include reduced motion control, blurred vision, or impairment of the ability of free communication, memory processes, or perception [6]. The paper covers the impact of vertical vibrations on a baby riding in a safety seat in a car, with addressing in particular the dangers caused by mechanical vibrations to children in transport facilities. Two options were considered, with the safety seat being installed on either the front or rear car seat. Experimental road tests were carried out with using a dummy representing the baby. The lack of research work on this issue has been emphasised. For the sake of maximum safety, babies should be transported in safety seats. The type approval tests of child safety seats are chiefly focused on the evaluation of protection from harmful collision effects, according to UN ECE Regulation No. 44 [S13]. Regrettably, they do not include tests to determine the influence of vibrations, especially those occurring during “normal” ride, on the child’s body.
Źródło:
Journal of KONES; 2013, 20, 1; 359-366
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration analysis of a half-car model with semi-active damping
Autorzy:
Ferdek, U.
Łuczko, J.
Powiązania:
https://bibliotekanauki.pl/articles/279944.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
semi-active damper
vibration damping
car suspension
hysteresis
Opis:
In this paper, analysis of a half-car model with linear and nonlinear semi-active dampers is performed. Using Matlab-Simulink software, a response of the system to a harmonic excitation of variable frequency and to an impulse excitation is found. The effect of both the distribution of spring-supported mass and the asymmetry of the support on the frequency characteristics of velocities and displacements at the mounting points of the dampers are analyzed. Additionally, characteristics of forces generated by the semi-active dampers and the response of the system when crossing an obstacle are determined.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 321-332
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance comparison of active and semi-active SMC and LQR regulators in a quarter-car model
Autorzy:
Ferdek, U.
Łuczko, J.
Powiązania:
https://bibliotekanauki.pl/articles/280009.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
active damping
semi-active damping
vibration reduction
car suspension
Opis:
In this paper, an analysis is performed on a quarter-car model of car suspension with semi- -active and active damper utilizing the sliding mode (SMC) and linear-quadratic control (LQR). The effect of control parameters and time delays in the transmission of control signal on the factors related to the safety and comfort of driving is investigated. The results obtained from numerical simulations are shown in form of frequency characteristics for several selected performance factors.
Źródło:
Journal of Theoretical and Applied Mechanics; 2015, 53, 4; 811-822
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intelligent system of noise control of the technical condition of railroad tracks
Autorzy:
Aliev, Telman
Babayev, Tofig
Alizada, Tahir
Alibayli, Elnur
Ahmedov, Heybatulla
Powiązania:
https://bibliotekanauki.pl/articles/2203848.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railroad track
geometry car
flaw detector car
vibration
identification
useful signal
noisy signal
equivalent signal
correlation analysis
spectral analysis
noise monitoring
intelligent system
tory kolejowe
drgania
identyfikacja
użyteczny sygnał
głośny sygnał
równoważny sygnał
analiza korelacyjna
analiza spektralna
monitorowanie hałasu
system inteligentny
Opis:
It is shown that modern geometry cars, flaw detector cars and other track test cars provide reliable control of the technical condition of all hauls of the railroad track at “certain intervals of time”. Their number is limited and therefore “continuous monitoring” of all hauls is almost impossible. At the same time, in real life, due to the impact of various factors, such as seismic processes, certain changes take place even a day after control. The authors consider one option for continuous monitoring of the beginning of changes in the technical condition of the track using intelligent tools, which allow one, by analyzing the useful signal and the noise from the soil vibrations caused by the rolling stock, to create informative attributes for identifying the technical condition of the track. The application of traditional technologies of correlation and spectral analysis and other methods for this purpose does not allow ensuring adequacy of the control results. This paper proposes a technology for extracting and analyzing useful vibration signals, the noise of vibration signals and the relationship between them. The estimates of both correlation and spectral characteristics of the useful signal and the noise are used as the main carriers of diagnostic information. Due to the simplicity and the reliability of implementation of the proposed technical tools, they can be easily installed in one of the cars of all rolling stocks, providing control of the beginning of changes in the technical condition of the track during their movement in all hauls
Źródło:
Transport Problems; 2021, 16, 1; 65--73
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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