引用本文: 金石磊, 何烈云, 王腾煜等. 三轮车侧向稳定性力学分析及仿真研究. 力学与实践, 2023, 45(2): 401-408.
Jin Shilei, He Lieyun, Wang Tengyu, et al. Mechanical analysis and simulation of lateral stability of tricycle. Mechanics in Engineering, 2023, 45(2): 401-408.
 Citation: Jin Shilei, He Lieyun, Wang Tengyu, et al. Mechanical analysis and simulation of lateral stability of tricycle. Mechanics in Engineering, 2023, 45(2): 401-408.

## MECHANICAL ANALYSIS AND SIMULATION OF LATERAL STABILITY OF TRICYCLE

• 摘要: 为研究影响三轮车侧向稳定性的因素，根据三轮车的结构特点，将三轮车简化视为三棱柱刚体，利用非共点力系对轴之矩的平衡原理，推导出了临界侧倾速度和最大侧倾稳定角理论计算模型。并结合实际车型，采用PC-Crash模拟仿真试验方法，得到了在不同工况时，三轮车临界侧倾速度和最大侧倾稳定角仿真试验值。运用MATLAB数值分析方法将理论计算结果与仿真试验值进行对比分析，验证了理论计算模型的可行性。研究表明，相对于四轮汽车，三轮车的侧向稳定性除了与车辆重心高度有关，还与重心纵向分布有关；三轮车侧翻事故预防可以从人、车、路三方面采取措施。

Abstract: In order to study the factors affecting the lateral stability of the tricycle, according to the structural characteristics of the tricycle, the tricycle is simplified as a triangular prism rigid body, and the theoretical calculation models of roll critical speed and maximum roll stability angle are derived by using the balance principle of the moment of the non-copoint force system to the axis. Combined with the actual vehicle, the PC-Crash simulation test method is used to obtain the simulation test values of the critical roll speed and the maximum roll stability angle of the tricycle under different working conditions. Using MATLAB numerical analysis method, the theoretical calculation results are compared with the simulation test values to verify the feasibility of the theoretical calculation model. The research shows that, compared with the four-wheel vehicle, the lateral stability of the tricycle is not only related to the height of the vehicle center of gravity, but also related to the longitudinal distribution of the center of gravity. Measures can be taken to prevent tricycle rollover accidents from three aspects: people, vehicles and roads.

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