Title: Dynamic characteristics of passive and semi-active cabin mounts for vibration control of a wheel loader

Authors: Soon-Yong Yang; Chulhee Han; Chul-Soo Shin; Seung-Bok Choi; Jin-Yeong Jung; Sung-Jae Kim; In-Dong Kim

Addresses: Department of Mechanical Engineering, Smart Structures and Systems Laboratory, Inha University, Incheon 22212, South Korea ' Department of Mechanical Engineering, Smart Structures and Systems Laboratory, Inha University, Incheon 22212, South Korea ' Department of Mechanical Engineering, Smart Structures and Systems Laboratory, Inha University, Incheon 22212, South Korea ' Department of Mechanical Engineering, Smart Structures and Systems Laboratory, Inha University, Incheon 22212, South Korea ' NVH Team, Doosan Infracore Co., Ltd., Incheon, 22502, South Korea ' NVH Team, Doosan Infracore Co., Ltd., Incheon, 22502, South Korea ' NVH Team, Doosan Infracore Co., Ltd., Incheon, 22502, South Korea

Abstract: In this study, the dynamic characteristics of passive mounts and a semi-active magneto-rheological (MR) mount for vibration attenuation of a wheel loader cabin are experimentally evaluated. First, the design procedures of two different passive mounts are described, and the principal design parameters such as stiffness are determined from a simple but practically feasible dynamic model. Then, passive mounts with different material characteristics are manufactured and experimentally tested. Secondly, a semi-active MR mount is designed based on the field-dependent yield stress of MR fluid. A prototype of the MR mount is then manufactured considering two flow paths: annular path and radial path. Subsequently, the dynamic characteristics of the three mounts such as the frequency-dependent stiffness and damping are evaluated, and their salient properties are discussed. In addition, it is shown from the transmissibility investigation that the semi-active MR mount can effectively isolate unwanted vibrations in a wider operating frequency range compared with the passive rubber mounts.

Keywords: magneto-rheological fluid; MR mount; heavy wheel loader; cabin mount; viscous mount; cabsus mount.

DOI: 10.1504/IJHVS.2019.098278

International Journal of Heavy Vehicle Systems, 2019 Vol.26 No.2, pp.239 - 261

Received: 23 Sep 2016
Accepted: 23 Mar 2017
Published online: 11 Mar 2019 *

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