Characterization of low‐acceleration, long‐duration horizontal events using a spring suspension straight delivery box truck,Packaging Technology and Science

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Characterization of low‐acceleration, long‐duration horizontal events using a spring suspension straight delivery box truck
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2021-01-04 , DOI: 10.1002/pts.2557
Kyle Dunno ₁ , Changfeng Ge ₁

Affiliation

A field measurement study, using a combination of controlled and uncontrolled phases, examined low‐acceleration, long‐duration events occurring during over‐the‐road truck transport. A field data recorder equipped with a DC‐based triaxial accelerometer was employed for this study to capture the steady‐state nature of these event types. The field data recorder was rigidly mounted to the trailer chassis to record lateral and longitudinal events of interest. The controlled phase recorded normal and aggressive braking events and traversing a roundabout to fundamentally quantify the behaviour of the vehicle. For the controlled phase, average decelerations of 0.27 and 0.45 g were reported for normal and aggressive braking events, respectively. Lateral accelerations from traversing a roundabout were on average 0.40 g. The uncontrolled field measurement study, which evaluated the transport vehicle over 13 days, reported average longitudinal decelerations and lateral accelerations of 0.29 and 0.34 g, respectively. The rise times associated with these events were also reported. The jerk was calculated based on the rise times for the controlled and uncontrolled phases and compared to currently available test procedures. For both project phases, composite test profiles were developed based on field‐measured levels. The resulting composite test profiles can be utilized to evaluate the load stability of a unit load system travelling through this distribution channel.

中文翻译：

使用弹簧悬挂直式输送箱卡车表征低加速度，长时间水平事件

现场测量研究使用控制阶段和非控制阶段的组合，研究了在公路卡车运输过程中发生的低加速度，持续时间较长的事件。这项研究使用了配备基于DC的三轴加速度计的现场数据记录器，以捕获这些事件类型的稳态性质。现场数据记录仪牢固地安装在拖车底盘上，以记录感兴趣的横向和纵向事件。受控阶段记录了正常和激进的制动事件，并经过回旋处以从根本上量化车辆的行为。对于受控阶段，正常和剧烈制动事件的平均减速度分别为0.27和0.45 g。穿越回旋处的横向加速度平均为0.40摹。一项未经控制的现场测量研究对运输车辆进行了为期13天的评估，报告的平均纵向减速度和横向加速度分别为0.29和0.34 g。还报告了与这些事件相关的上升时间。根据受控阶段和非受控阶段的上升时间来计算加加速度，并将其与当前可用的测试程序进行比较。在两个项目阶段，都根据现场测量的水平制定了综合测试配置文件。生成的复合测试曲线可用于评估通过此分配通道的单位负载系统的负载稳定性。

更新日期：2021-01-04

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