Stuck
Stuckern is a technical term from automotive engineering . It describes vibrations that are stimulated by uneven road surfaces and amplified by natural unit vibrations or wheel vibrations.
Stuckern is perceived as a bumpy movement when driving. One goal of automobile development is to reduce these vehicle vibrations as much as possible. A proven technique is the use of (hydraulically) damped engine bearings. Stucking is hardly noticeable in modern luxury cars.
More precisely, stucking describes the resonance oscillation of the motor and gearbox in the Z direction (vertical direction). Typical stuttering frequencies are 7 to 14 Hz. This is how stucking occurs primarily on concrete motorways. An excitation frequency results from the joint spacing and driving speed. If this agrees with the resonance frequency of the elastically mounted drive unit, stucking occurs. The natural frequency of the wheel mass and tire spring system is also roughly in this frequency range and thus contributes to the stucker level.
See also
literature
- Manfred Mitschke, Henning Wallentowitz: Dynamics of motor vehicles . 4th edition Springer-Verlag, Berlin 2004, ISBN 3-540-42011-8 .