Vibration Reduction Study with Air-Cushion

Vibration characteristics of tractor seat cushion materials

Operators of agricultural machinery are exposed to an extensive range of indirect vibrations through the seats, which gradually causes chronic damages. One of the ways to reduce the vibrations imposed on the operators is to use appropriate materials in tractor seat cushion. The present study was carried out in order to select appropriate foam or sponge and investigate different factors in reduc...

the effect of cushion of air on vibration transmitted to vehicle drivers based on standard

background and aims: whole body vibration (wbv) transmitted to drivers is one of the main reasons for several different symptoms such as musculoskeletal disorders. one of the recommendations to decrease the effects of whole body vibration is using a device that acts as an isolator. in this study, we used an air cushion as a device to decrease wbv. we measured whole body vibration transmitted to...

The PTB Supracondylar-Suprapatellar Air-Cushion Socket

The patallar-tendon-bearing supracondy­ lar, suprapatellar air cushion (PTS-AC) below-knee (BK) prosthesis is a special modi­ fication of the supracondylar, suprapatellar suspension and the air cusion socket. The air cushion principle in combination with the patella tendon-bearing (PTB) prosthesis was introduced by Lyquist, Wilson, and Radcliffe (Fig. 1), (2) in 1965. It requires more accurate ...

Automotive Ride-Comfort Improvement with an Air Cushion Seat

In this paper, for the purpose of improving the ride comfort of a passenger car, the use of an air-cell on top of the conventional polyurethane foam seat is proposed. The air-cell can be modeled as a variable spring with the change of its internal air pressure. Therefore, for different human sizes and road disturbances, the adjustment of the air-cell can make the optimal contact pressure betwee...

Cushion Effects During Low Frequency Jet Aircraft Vibration Exposure