重裝備 車輛用 Suspension Seat 設計 및 安全性 評價에 關한 硏究

Abstract

A mechanical suspension seat with a lower seat frame against 3-axis compound vibration, to increase sliding, reclining and maintenance capabilities, was designed and its protype was fabricated. From the results of tests on damping characteristics and vibration acceleration for the mechanical suspension seat, the following conclusions were drawn:

1. The vibration acceleration of the developed prototype suspension seat was 1.105 m/s2, which is lower than 1.25 m/s2, currently the lowest value in the world. 2. The values of awB, awS and awS/awB, which represent damping characteristics in the resonant region, were respectively 0.076m/s2, 0.074 m/s2, and 0.975 at a load of 40 kg, and 0.076 m/s2, 0.084 m/s2, 1.105 at 80 kg. At the two loads the ratios awS/awB were much smaller than 2.0.

3. The velocity of oil through the orifice was faster as the compression velocity was ejected, near the orifice of static pressure distribution in the primary pressure is decreased, the velocity was significantly greater tendency to rotate.

4. The average values of awB, awS and awS/awB were respectively 0.075 m/s2, 0.065 m/s2, and 0.86 at the load of 40 kg, and 0.076m/s2, 0.063 m/s2, 0.83 at 80 kg.

5. The average values of awB, awS and a*wS were respectively 0.168m/s2, 0.129 m/s2, and 1.155 m/s2 at 59 kg, and 0.168 m/s2, 0.098m/s2, and 0.877 m/s2 at 98 kg.

6. Measurements of the acceleration of a wave plate showed the maximum values of acceleration of ±0.45 without filtering and ±0.45 with filtering at 59kg, and ±0.7 without filtering and ±0.40 with filtering at 98kg, respectively.

7. The acceleration of a wave sheet yielded the maximum values of acceleration of ±0.30 without filtering and ±0.28 with filtering at 59kg, and ±0.22 without filtering and ±0.20 with filtering at the load of 98kg, respectively.