Article: Improving the vibratory roller's ride comfort under off-road soil grounds by applying the seat's negative-stiffness elements Journal: International Journal of Vehicle Noise and Vibration (IJVNV) 2022 Vol.18 No.3/4 pp.166 - 185 Abstract: This study proposes the cab's hydraulic mount (HM) and seat's negative-stiffness elements (NSE) to reduce the cab shaking and improve the ride comfort of the vibratory rollers. A vehicle dynamic model is built to assess the vehicle's ride comfort under deformable soil grounds. The indexes of the root-mean-square (r•m•s) seat displacement (Zw1), r•m•s seat acceleration (aw1), and r•m•s cab pitching acceleration (awϕ2) are selected to assess the ride comfort. The study results indicate that the seat's ride comfort and cab's pitch angle are greatly improved by using the NSE and HM under various working conditions. Especially, the Zw1, aw1, and awϕ2 are remarkably reduced by 36.4%, 82.4%, and 50.9% in comparison without the NSE and HM when the vehicle is travelling on deformable soil grounds, respectively. Consequently, the application of the NSE on the seat's suspension of vibratory rollers or other vehicles can further enhance the driver's ride comfort and health. Inderscience Publishers - linking academia, business and industry through research

Title: Improving the vibratory roller's ride comfort under off-road soil grounds by applying the seat's negative-stiffness elements

Authors: Shan Wang; Chunxia Wang; Nguyen Van Liem; Shaoyong Xu

Addresses: College of Mechanical and Electrical Engineering, Jiaozuo University, Jiaozuo, Henan 454000, China ' College of Mechanical and Electrical Engineering, Jiaozuo University, Jiaozuo, Henan 454000, China ' School of Mechanical and Electric Engineering, Hubei Polytechnic University, Huangshi, 435003, China ' School of Mechanical and Electric Engineering, Hubei Polytechnic University, Huangshi, 435003, China

Abstract: This study proposes the cab's hydraulic mount (HM) and seat's negative-stiffness elements (NSE) to reduce the cab shaking and improve the ride comfort of the vibratory rollers. A vehicle dynamic model is built to assess the vehicle's ride comfort under deformable soil grounds. The indexes of the root-mean-square (r•m•s) seat displacement (Z_w1), r•m•s seat acceleration (a_w1), and r•m•s cab pitching acceleration (a_wϕ2) are selected to assess the ride comfort. The study results indicate that the seat's ride comfort and cab's pitch angle are greatly improved by using the NSE and HM under various working conditions. Especially, the Z_w1, a_w1, and a_wϕ2 are remarkably reduced by 36.4%, 82.4%, and 50.9% in comparison without the NSE and HM when the vehicle is travelling on deformable soil grounds, respectively. Consequently, the application of the NSE on the seat's suspension of vibratory rollers or other vehicles can further enhance the driver's ride comfort and health.

Keywords: driver's ride comfort; seat's negative-stiffness elements; NSE; vibratory rollers; off-road soil grounds; cab's hydraulic isolation.

DOI: 10.1504/IJVNV.2022.128264

International Journal of Vehicle Noise and Vibration, 2022 Vol.18 No.3/4, pp.166 - 185

Received: 03 Feb 2022
Accepted: 26 Apr 2022
Published online: 16 Jan 2023 *

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Title: Improving the vibratory roller's ride comfort under off-road soil grounds by applying the seat's negative-stiffness elements

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