力学与实践 ›› 2020, Vol. 42 ›› Issue (3): 294-299.DOI: 10.6052/1000-0879-19-320

• 应用研究 • 上一篇    下一篇

非满载液罐车侧倾稳定性的准静态等效力学模型

何烈云*,1), 刘强   

  1. *浙江警察学院 交通管理工程系,杭州 310053;
    基于大数据架构的公安信息化应用公安部重点实验室,杭州 310053
  • 收稿日期:2019-09-02 修回日期:2020-01-08 出版日期:2020-06-20 发布日期:2020-06-29
  • 通讯作者: 1) E-mail: lelieyun@qq.com

A QUASI-STATIC EQUIVALENT MECHANICAL MODEL FOR ROLL STABILITY OF PARTIALLY-FILLED TANKER TRUCKS

HE Lieyun*,1), LIU Qiang   

  1. *Department of Traffic Management Engineering, Zhejiang Police College, Hangzhou 310053, China;
    Key Laboratory of Public Security Information Application Based on Big-data Architecture, Ministry of Public Security, Hangzhou 310053, China
  • Received:2019-09-02 Revised:2020-01-08 Online:2020-06-20 Published:2020-06-29

摘要: 非满载液罐车转向行驶时,液体重心会发生偏移现象,对液罐车的侧倾稳定性造成不利影响。以椭圆形截面液罐车为例,分析了液罐车转向时发生侧翻的力学机理,将液面变化近似符合准静态过程,确定压力中心位置,计算液体对罐体壁的总压力,得到非满载液罐车转向侧倾稳定性准静态等效力学模型。研究结果表明,液罐车侧倾稳定性与罐体横截面形状、液体充装率等因素相关,为提高液罐车侧倾稳定性提供了理论分析依据。

关键词: 液罐车, 侧倾稳定性, 准静态, 力矩平衡, 重心

Abstract: When a partially-filled tanker truck is turning, the center of gravity of the liquid shifts, which negatively influences the roll stability of the tanker truck. An elliptical-shaped tanker truck with partially-filled liquid is taken as an example and its rollover mechanism in the course of turning is analyzed. With the liquid level change being approximately represented by a quasi-static process, the pressure on the internal wall of the tank is calculated to locate the pressure center and a quasi-static equivalent mechanical model for the roll stability of partially-filled tanker trucks under turning conditions is established. This model provides a theoretical basis for developing the rollover-warning system of tanker trucks. It is shown that the roll stability of the tank car is related to the cross-sectional shape of the tank body and the filling rate of the liquid, and the results can be used for improving the roll stability of the tank car.

Key words: tanker truck, roll stability, quasi-static, torque balance, centroid

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