Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Abstract

The impact of transport-induced vibrations on people is a particularly important problem. Sudden or intensifying vibration phenomena of a local nature may compromise safety, especially in transport. The paper addresses the results of research on the impact of spring stiffness parameters on the propagation of vibrations in the vehicle structure using simple amplitude and frequency measures. The use of the developed method of selective multi-criteria analysis of frequency bands made it possible to compare the vibrations recorded in the vehicle with a new or worn coil spring. The results of the present study allow the development of a large data base in which all signals are classified by the exploitation parameters and location of the propagation of vibration in the vehicle. The most important findings and achievements of the presented study are the testing of actual suspension components with real damage under controlled conditions, the identification of the vibration propagation path from the wheel to the driver and passenger feet, the quantitative comparison of vibrations affecting humans in the vehicle (through the feet), and the frequency decomposition of vibration for selected bands. These findings improve the proper interpretation of the developed measures and, as a result, the difficulties in using this knowledge at the engineering level, for example, in the design and construction improvement stage. Therefore, innovation points and engineering significances are a method of selective multi-criteria analysis of frequency bands and have potential applications in diagnostics and the design of suspension systems and in terms of passengers’ comfort.

Diagnosis and Study of Mechanical Vibrations in Cargo Vehicles Using ISO 2631-1:1997

“…This work concentrates on diagnosing and studying the mechanical vibrations produced in a cargo vehicle while adhering to ISO 2631 [ 1 ]. An additional step is to consider security measures for data protection and end-user safety, such as the drivers of freight vehicles [ 13 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. These works concern the investigation, analysis, and forecasting of the impact of vibration on cargo vehicle drivers.…”

Research and Simulation on the Development of a Hydraulic Prop Support System of Powered Roof Support to Increase Work Safety

“…2024, 7, 33 6 of 20 connecting the valve block to the over-piston space of the prop, constituting adequate protection against internal leaks and the resulting increase in pressure in the over-piston space to a value exceeding the resistance of the connecting wires, as well as when only one of the props is expanded. The system also uses an additional check valve (6) connected in series to this system. Using the valve eliminates the possibility of fluid backflow to the main supply line in the event of contamination of the check valve (2d).…”

“…Efficient and effective operation is necessary to ensure economic viability [4]. Therefore, efforts are being made to reduce machine failures, to improve machine diagnostics [5][6][7] and to assess quality [8,9]. When it comes to safety, new technical solutions are being sought to reduce risks from machinery [10], and efforts are made to combat natural hazards more effectively [11][12][13].…”

Frequency Analysis of Vibrations in Terms of Human Exposure While Driving Military Armoured Personnel Carriers and Logistic Transportation Vehicles

“…The purpose of the present paper is to compare the vibration levels experienced by the human body [31] while driving or being transported by two different types of vehicles belonging to the Romanian armed forces, one for cargo transportation and the other being a personnel carrier vehicle [32].…”