Journal of Theoretical
and Applied Mechanics

56, 3, pp. 615-629, Warsaw 2018
DOI: 10.15632/jtam-pl.56.3.615

Nonlinear modeling and analysis of a shock absorber with a bypass

Urszula Ferdek, Jan Łuczko
The model of a mono-tube shock absorber with a bypass is proposed in this paper. It is
shown that the application of an additional flow passage (bypass) causes changes to the
damping force characteristics when the excitation amplitudes are large. In such cases, the
damping force values increase, thereby improving safety of the ride. For small excitation
amplitudes, the shock absorber behaves in a similar fashion as shock absorbers without a
bypass, ensuring a high comfort level of the ride on roads with smooth surfaces.
Keywords: shock absorber, hydraulic damper, vehicle suspension, nonlinear, vibrations

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