The influence of magnetorheological dampers on the biodynamic response of the human (pilot) body in various flight maneuvers

Mohammad Khanlo, Heshmatolah; Dehghani, Reza

doi:10.22064/tava.2021.105238.1132

The influence of magnetorheological dampers on the biodynamic response of the human (pilot) body in various flight maneuvers

Document Type : Research Article

Authors

¹ Department of Aerospace Engineering, Shahid Sattari Aeronautical University of Science and Technology, Tehran, Iran

² Department of Mechanical Engineering, Graduate University of Advanced Technology, Kerman, Iran

10.22064/tava.2021.105238.1132

Abstract

This paper presents the effect of a magnetorheological (MR) damper in the aircraft seat system on the body's biodynamic response for different flight maneuvers. For this purpose, discrete models 4 and 7 degrees of freedom for human modeling and the Bouc-Wen model are used to model MR damper. In various flight maneuvers, the changes in acceleration g are recorded and applied to the desired models after processing. Models used for the human body and the MR damper are compared for validation with previously published researches. The dynamic responses of the human body to these inputs without MR dampers and with an MR damper are investigated. The transmissibility[1] of the seat to the human body is used as a parameter that is common in these types of analyses. The results show that the use of MR dampers has a significant effect on reducing the transmissibility in maneuvers with a sudden increase in acceleration and also significant changes in the frequency at which maximum transmissibility is achieved.

Highlights

The effect of the magnetic damper is considered on the aircraft pilot's seat.
The biodynamical characteristics of the pilot body are modelled using discrete models.
Changes in acceleration as input are recorded by real flight maneuvers.
Biodynamic analysis is performed by calculating the transmissibility to the pilot's body.
The most vulnerable members of the pilot's body are evaluated.

Keywords

Main Subjects

Human Response to Vibration

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