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Investigation of the effect of safety belt on the seat transmissibility

机译:安全带对座椅透过性的影响研究

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摘要

Seat transmissibility is used to evaluate the vibration attenuation performance of seats. Because the seat and the driver interact with each other, the seat transmissibility is affected by the dynamic characteristics of the driver. The constraint on the movement of the driver caused by the safety belt results in the change of the seat-driver dynamics and the seat transmissibility. Vibration accelerations were measured on the seat cushion and at the seat base on a medium size wheel loader when the driver wore a lap belt or a four-point seat harness. The seat effective amplitude transmissibility value and the seat transmissibility derived from the cross spectral density method were analysed to investigate the effect of safety belt on the seat transmissibility. Two multi-body models of the seat-driver system were built in MATLAB and their parameters were identified in cases where the driver wore the lap belt or the four-point seat harness. Based on the analysis of these parameters, the way how the safety belt affects the seat-driver dynamics and the seat transmissibility is studied.
机译:座椅的可传递性用于评估座椅的减振性能。因为座椅和驾驶员彼此相互作用,所以驾驶员的动态特性影响座椅的可传递性。由安全带引起的对驾驶员运动的约束导致座椅驾驶员动力学和座椅可传递性的改变。当驾驶员系上安全带或四点式安全带时,在中型轮式装载机上的座垫和座椅底座上测量振动加速度。分析了座椅有效幅度透射率值和交叉光谱密度法得出的座椅透射率,以研究安全带对座椅透射率的影响。在MATLAB中建立了两个座椅驱动器系统的多体模型,并在驾驶员系上安全带或四点式安全带的情况下确定了它们的参数。在对这些参数进行分析的基础上,研究了安全带如何影响座椅驾驶员动力学和座椅可传递性。

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