Limits of permissible vibrations of vehicles for different driving conditions and norms of vibration load

Truck Pub Date : 2023-08-01 DOI:10.36652/1684-1298-2023-8-9-15

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Abstract

A method for constructing regulatory boundaries for the amplitude-frequency characteristics of sprung vehicles is presented using the parameters of the road micro-profile and the regulations of vibration load. Formulas are given for calculating the standard spectral dispersion densities for the boundaries of labor productivity decrease, comfort boundaries and boundaries that ensure safety and health, with a duration of vibration exposure of 8 hours, 4, and 1 hour. The graphs of the regulatory spectral densities of dispersions for the boundaries of the decrease in labor productivity for the same duration of exposure are given. The method for calculating the spectral density of the dispersion of the road profile based on its correlation function is presented. Formulas for calculating spectral dispersion densities for 8 types of road profile are given. The examples of the regulatory boundaries of the amplitude-frequency characteristics obtained on the basis of the presented method are given. Keywords: vehicle suspension, road micro-profile, spectral density of road micro-profile, correlation function of road microprofile, regulatory boundaries, amplitude-frequency characteristics

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车辆在不同行驶条件下的允许振动极限及振动载荷规范

提出了一种利用道路微轮廓参数和振动载荷规律构造簧载车辆幅频特性调节边界的方法。给出了振动暴露时间为8小时、4小时和1小时时劳动生产率下降边界、舒适边界和安全卫生边界的标准谱散密度计算公式。给出了相同暴露时间下劳动生产率下降边界的色散调节谱密度图。提出了一种基于相关函数计算道路轮廓色散谱密度的方法。给出了8种道路剖面光谱色散密度的计算公式。给出了基于该方法得到的幅频特性调节边界的实例。关键词:车辆悬架，道路微轮廓，道路微轮廓谱密度，道路微轮廓相关函数，调节边界，幅频特性

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Truck

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