横风对双层集装箱平车运行稳定性的影响

高广军; 田红旗; 张健

横风对双层集装箱平车运行稳定性的影响

中南大学高速列车研究中心, 湖南长沙 410075

详细信息

作者简介:
高广军(1973-), 男, 河南安阳人, 中南大学讲师, 从事车辆动力学研究

中图分类号: U260.11
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- 文章访问数: 275
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- PDF下载量: 250
- 被引次数: 0
出版历程
- 收稿日期: 2003-09-09
- 刊出日期: 2004-06-25

Cross-wind affection on double container train

Research Center of High-speed Train, Central South University, Changsha 410075, China

More Information

Author Bio:
GAOGuang-jun(1973-), male, lecturer, 86-731-2655294, ggj5883@china.com

摘要

摘要: 采用流场数值模拟计算方法, 计算了横风作用时的垂向气动升力系数、气动横向力系数和侧滚力矩系数, 得出各系数与车辆速度和风速之间的变化关系。从动力学角度, 根据力矩平衡原理推导了横风作用时车辆稳定性计算关系式, 根据车辆运行的实际情况得出双层集装箱平车在不同装载情况下的临界倾覆风速和风速之间的关系, 并分析了垂向气动升力、横向气动力和侧滚力矩对车辆倾覆稳定性的影响。结果显示, 横风引起的力中气动横向力占主导作用; 空车比重车的临界倾覆风速低; 重车比空车的临界运行车速低。
- 车辆工程 /
- 双层集装箱平车 /
- 横风 /
- 倾覆安全性 /
- 力矩平衡
Abstract: Using numerical computation of fluid flow, the coefficients of vertical force, lateral force and rolling moment caused by cross-wind were calculated, which were related to train speed and wind speed. The equation of train stability was derived with the theory of moment balance from the view of dynamics, and the relation between the train's critical speed of different loading conditions and wind speeds was calculated based on the real running. The effects of vertical force, lateral force and rolling moment on the capsize stability were also analysed. The results show that the vertical force is main factor caused by cross-wind, the critical wind speed of empty car is lower than the speed of loading car, and the critical train speed of loading car is lower than that of empty car.
- vehicle engineering /
- double container car /
- cross-wind /
- capsize safety /
- moment balance

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图 1 双层集装箱车

Figure 1. Double container car

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图 2 集装箱车体受力

Figure 2. Forces of container car

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图 3 工况1

Figure 3. Condition 1

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图 4 工况2

Figure 4. Condition 2

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图 5 工况3

Figure 5. Condition 3

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图 6 工况4

Figure 6. Condition 4

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表 1 计算结果

Table 1. Computational results

tg^-1 (u/V) / (°)	24	44	70	90
C_fY	0.661 8	1.200 3	1.712 3	1.573 0
C_fZ	-0.032 4	-0.021 0	0.020 2	0.063 7
C_mX	0.006 7	0.058 6	0.096 7	0.115 0

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表 2 四种工况

Table 2. Four formats

工况	装载状态	簧上总质量/t
工况1	2×40 ft重箱	74.7
工况2	2×24 ft+40 ft重箱	91.7
工况3	2×40 ft空箱	21.7
工况4	53 ft+40 ft空箱	91.7

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表 3 不同工况力的计算结果

Table 3. Computational results of forces in defferent condition

参数	工况1	工况2	工况3	工况4
气动升力占垂向力百分率/%	0.9	0.8	2.4	2.4
横向气动力/N	340 572	398 938	103 215	139 070
侧滚弯矩/ (N·m)	27 229	38 271	13 238	-9 359

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参考文献(7)

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