Analiza gibanja ventilske opruge
Abstract
The paper considers the surge of a spring, retained at oneend and controlled by a cam at the other end. The periodic liftfunction of the cam was approximately replaced by the Fourierpoly nom. The forced displacement amplitudes were determinedfor each harmonic of this poly nom. The theory of forced longitudinal vibrations of a bar with continuously distributed mass,elasticity and dumping was applied to simulate the motion ofspring coils. It was found out that two or more modes may consistconcurrently in the spring. This was obtained by analyzingmathematical formulas and by comparing computed and publishedmeasured results. The line spectrum of the Fourier serieswas introduced as a useful tool for estimating the influence ofthe high order harmonics on the spring surge.References
HUSSMANN, A.: Schwingungen in schraubenformigen
Ventilfedern. Dissertation, TH Berlin, 1938 .
STRAUBEL, M.: Beitrag zur Erjassung und Beeinjlussung
des Schwingungsverhalten van Nockengetrieben. Dissertation,
TH Miinchen, 1964.
KLOTTER, K.: Technische Schwingungslehre, Erster
Band: Einfache Schwinger, Teil A: Lineare Schwingungen.
Dritte Auflage, Springer-Verlag Berlin Heidelberg New
York 1981, ISBN 3-540-08673-0.
BRONSTEJN, I. N., SEMENDJAJEV, K. A.:
Matematic'ki prirucnik za inzenjere i studente. Tehnicka
knjiga Zagreb, 1964.
HAFNER, K. E.: Investigating the Dynamic Behaviour of
Valve Mechanisms with Engineering Vibration Methods,
'lOth International Congress Combustion Engines'. New
York, 1973, str. 313-337.
ROSKILLY, M., FERAN, W. H.: Valve Gear Design
Analysis. XXI Fisita Congress, Belgrade 1986, Paper
Application of Computers in Valve Gear Design. SAE Inc.
New York 1963, Library of Congress Catalog Card Number:
-23158.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
