Mitigation of biodynamic response to vibratory and blast-induced shock loads using magnetorheological seat suspensions

Young-Tai Choi; Norman M. Wereley

doi:10.1117/12.483490

5 August 2003 Migration of biodynamic response to vibratory and blast-induced shock loads using magnetorheological seat suspensions

Young-Tai Choi, Norman M. Wereley

Author Affiliations +

Proceedings Volume 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems; (2003) https://doi.org/10.1117/12.483490
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

This study investigates biodynamic response mitigation to three different excitations of sinusoidal and random vibrations and shock load using a magnetorheological (MR) seat suspension. In doing so, an MR seat suspension model for military vehicles, with a detailed lumped parameter model of the human body, was developed. The lumped parameter model of the human body consists of four parts: pelvis, upper torso, viscera and head. From the model, the governing equation of motion of the MR seat suspension considering the human body was derived. Based on this equation, a semi-active nonlinear optimal control algorithm appropriate for the MR seat suspension was developed. The simulated control performance of the MR seat suspension was evaluated under three different excitations of sinusoidal and random vibration and tremendous shock load due to a mine explosion. In addition, the mitigation of injuries to humans due to such shock load was also evaluated and compared with the passive seat suspension using a passive hydraulic damper.

Citation Download Citation

Young-Tai Choi and Norman M. Wereley "Migration of biodynamic response to vibratory and blast-induced shock loads using magnetorheological seat suspensions", Proc. SPIE 5056, Smart Structures and Materials 2003: Smart Structures and Integrated Systems, (5 August 2003); https://doi.org/10.1117/12.483490

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