Object

Title: The dynamic characteristic and hysteresis effect of an air spring

Creator:

Welsch, Michael ; Löcken, Florian

Date:

2015

Resource Type:

artykuł

Contributor:

Jurczak, Paweł - red.

Group publication title:

IJAME, volume 20 (2015)

Abstract:

In many applications of vibration technology, especially in chassis, air springs present a common alternative to steel spring concepts. A design-independent and therefore universal approach is presented to describe the dynamic characteristic of such springs. Differential and constitutive equations based on energy balances of the enclosed volume and the mountings are given to describe the nonlinear and dynamic characteristics. ; Therefore all parameters can be estimated directly from physical and geometrical properties, without parameter fitting. The numerically solved equations fit very well to measurements of a passenger car air spring. In a second step a simplification of this model leads to a pure mechanical equation. While in principle the same parameters are used, just an empirical correction of the effective heat transfer coefficient is needed to handle some simplification on this topic. ; Finally, a linearization of this equation leads to an analogous mechanical model that can be assembled from two common spring- and one dashpot elements in a specific arrangement. This transfer into "mechanical language" enables a system description with a simple force-displacement law and a consideration of the non-obvious hysteresis and stiffness increase of an air spring from a mechanical point of view.

Publisher:

Zielona Góra: Uniwersytet Zielonogórski

Format:

application/pdf

Resource Identifier:

oai:zbc.uz.zgora.pl:73575

DOI:

10.1515/ijame-2015-0009

Pages:

127-145

Source:

IJAME, volume 20, number 1 (2015)

Language:

eng

License:

CC 4.0

License CC BY-NC-ND 4.0:

click here to follow the link

Rights:

Biblioteka Uniwersytetu Zielonogórskiego

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