Review on Development of High-Static–Low-Dynamic-Stiffness Seat Cushion Mattress for Vibration Control of Seating Suspension System

Abstract

This review focuses on studying passive vibration isolation techniques and their applications. Advantages and disadvantages of different vibration isolation techniques will be compared in order to find an innovative method to reduce seating suspension system vibration and improve the ride comfort of vehicles’ drivers. Quasi-zero stiffness (QZS) isolators of high-static–low-dynamic stiffness are found to have good application prospects in low-frequency vibration isolation. In order to improve the isolation performance of the seating suspension system, a specially made seat cushion will be studied where a quasi-zero stiffness (QZS) isolator such as a double-diamond isolator is selected as one of the cells/units/elements of the seat cushion mattress. The double-diamond isolator structure does not represent the whole seating suspension system. The transmissibility ratio of the double-diamond isolator is evaluated by analytical and simulation models and compared to that of a conventional linear spring isolator. Although the performance of the passive vibration isolation/control system is usually worse than that of the active or semi-active control system, the cost of the passive vibration isolation/control system is lower than that of the active and semi-active control system, and the relative simplicity of adding a vibration isolation cushion mattress in an existing passive seating suspension system makes it low in cost, easy to implement, and more attractive than the active and semi-active vibration control systems.

3D-Printed Programmable Mechanical Metamaterials for Vibration Isolation and Buckling Control

“…Therefore, drivers operating in sectors such as mining, construction, and agriculture who spend many hours a day on the road are particularly vulnerable to the potentially harmful vibrations that result from poor road conditions. Studies have shown low frequency, whole-body vibrations could cause various health issues, including increased tiredness, fatigue, motion sickness, vertebrae diseases, digestive and vision issues, balance impairment, and a reduction in reaction times [23]. Due to the glaring consequences of vibration on the health of off-road vehicle drivers, industry players have considered it a critical factor in the design and manufacturing of automotive vehicles.…”

A brief review of metamaterials for opening low-frequency band gaps

“…Low-frequency vibration widely exists in engineering structures [23] . Currently, utilizing metamaterials to suppress low-frequency vibration propagation along the engineering structures has aroused great concerns.…”

Modeling, analysis, and simulation of X-shape quasi-zero-stiffness-roller vibration isolators

“…Applying this advantage, this design is successfully applied to the gravity counteraction for astronautic device tests [2][3] and gravity meter [4] . Now, it has been widely studied for more than 60 years [5][6] . The key of QZS is to realize the negative stiffness [7] .…”