Analysis of the Vibrations of Operators’ Seats in Agricultural Machinery Using Dynamic Substructuring

Applied Sciences

Walter D'Ambrogio¹  Jacopo Brunetti¹  Annalisa Fregolent² 

[1] Dipartimento di Ingegneria Industriale e dell’Informazione e di Economia, Università dell’Aquila, via G. Gronchi, 18, I-67100 L’Aquila, Italy;Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma La Sapienza, via Eudossiana, 18, I-00184 Roma, Italy;

关键词: dynamic substructuring;    vibrations;    vibration exposure;    agricultural machinery;    agricultural tractors;   

DOI  :  10.3390/app11114749

来源: DOAJ

【 摘 要 】

The vibrations produced by an agricultural machine are transmitted to the seat of the tractor operator and must comply with the limitations imposed by international and national regulations. An agricultural machine is generally composed of a tractor that can be linked to different machines required to perform a large number of agricultural tasks. In this paper, substructuring techniques are proposed to investigate the dynamics of the agricultural machine and to evaluate the resulting vibration exposure to the tractor driver in different configurations of the machine. These techniques allow one to couple reduced-order models or experimental models of the component subsystems to obtain the response of the whole system. In the results, the vibration exposure of the tractor operator is evaluated for different configurations of the agricultural machine, by observing the frequency response function (inertance and transmissibility) and the transient response to a given excitation. In conclusion, these techniques allow one to investigate a large number of different configurations and a wide range of operating conditions with a light computational burden and without asking the manufacturers to share sensitive design details.

【 授权许可】

Unknown