Improvement of suspension seat performance

Summary

The objectives were to improve understanding of the dynamic behaviour of suspension seats in response to translational and rotational motions and to develop theoretical and physical suspension systems capable of improving seat performance in these axes.

Objectives

The research activities were mainly devoted to:

• assessment of the dynamic performance of representative suspension seats in the fore-and-aft and lateral directions in the laboratory
• development of mathematical models for simulation of the seat-person system dynamic performance in both horizontal directions
• determination of seat component dynamic properties
• development of improved horizontal seat suspension systems using the mathematical models

Achievements

• model of the seated human body and cushioned seat in the fore-and-aft direction has been developed (Stein et al. JoB 2007; Stein et al. JSV 2006);
• model of the seated human body and cushioned seat in the lateral direction was developed (Stein et al. JSV 2009);
• model of the locomotive seat vertical suspension was proposed to predict vibration influence on driver under field conditions (Stein et al. IJIE 2008);
• model of the locomotive seat vertical suspension with optimised adjustable damper was proposed (Stein et al. VSD 2009);
• methodology of physically correct stick–slip model of dry-friction in oscillatory system was proposed (Stein et al. JSV 2008);
• design and manufacturing of a compact vibration measuring system of human vibration influence based on 3D MEMS accelerometers.

 

Additional reading

STEIN, George Juraj - MÚČKA, Peter. Theoretical investigation of a linear planar model of a passenger car with seated people. In Proceedings of the Institution of Mechanical Engineers Part D : Journal of Automobile Engineering, 2003, vol. 217, p. 257-268.

STEIN, George Juraj - MÚČKA, Peter - CHMÚRNY, Rudolf. Preliminary results on an x-direction apparent mass model of human body sitting in a cushioned, suspended seat. In Journal of Sound and Vibration, 2006, vol. 298, p. 688-703. ISSN 0022-460 X.

STEIN, George Juraj - MÚČKA, Peter - CHMÚRNY, Rudolf - HINZ, Barbara - BLÜTHNER, Ralph. Measurement and modelling of x-direction apparent mass of the seated human body-cushioned seat system. In Journal of Biomechanics, 2007, vol. 40, p.1493-1503. (2007 - Current Contents). ISSN 0021-9290.

STEIN, George Juraj - MÚČKA, Peter - GUNSTON, T.P. - BADURA, S. Modelling and simulation of locomotive driver's seat vertical suspension vibration isolation system. In International Journal of Industrial Ergonomics, 2008, vol. 38, nos.5-6, p.384-395. (2008 - Current Contents). ISSN 0169-8141.

STEIN, George Juraj - ZAHORANSKÝ, Radúz - MÚČKA, Peter. On dry friction modelling and simulation in kinematically excited oscillatory systems. In Journal of Sound and Vibration, 2008, vol. 311, p.74-96. (1.024 - IF2007). (2008 - Current Contents). ISSN 0022-460X.

STEIN, G. J. – ZAHORANSKÝ, R. – GUNSTON, T. P. – BURSTRÖM, L. – MEYER, L. Modelling and simulation of a fore-and-aft driver’s seat suspension system with road excitation. In International Journal of Industrial Ergonomics. Vol. 38, nos. 5-6 (2008),p. 396-409. (CC) (0,628 - IF 2007)

STEIN, George Juraj - MÚČKA, Peter - GUNSTON, T.P. A study of locomotive driver´s seat vertical suspension system with adjustable damper. In Vehicle System Dynamics, 2009, vol. 47, no.3, p.363-386. (0.724 - IF2008). (2009 - Current Contents). ISSN 0042-3114.

STEIN, George Juraj - MÚČKA, Peter - HINZ, Barbara - BLÜTHNER, Ralph. Measurement and modelling of the y-direction apparent mass of sitting human body-cushioned seat system. In Journal of Sound and Vibration, 2009, vol. 322, nos.1-2, p. 454-474. (1.364 - IF2008). ISSN 0022-460X.

STEIN, George Juraj - MÚČKA, Peter. Study of simultaneous shock and vibration control by a fore-and-aft suspension system of a driver´s seat. In International Journal of Industrial Ergonomics, 2011, vol. 41, p.520-529. (1.322 - IF2010). (2011 - Current Contents). ISSN 0169-8141.

STEIN, George Juraj - CHMÚRNY, Rudolf - ROSÍK, Vladimír. Compact Vibration Measuring System for in-vehicle Applications. In Measurement Science Review : 2011, vol.11, no.5, p.154-159. (0.400 - IF2010). (2011 - WOS, SCOPUS). ISSN 1335-8871.

Related projects

• Evaluation and improvement of suspension seat vibration isolation performance, 2002 - 2005
• Vibration mitigation of driver-operator in fore-and-aft direction by passive, active or semi-active vibration control systems, 2006 - 2008
• Vibration mitigation of the vehicle driver/operator in two directions (axis) by passive, active or semi-active vibration control systems while accounting for properties of real excitation from road, terrain and driving unit, 2010 - 2012