The stability mechanism and its application to heavy-haul couplers with arc surface contact
The stability mechanism and its application to heavy-haul couplers with arc surface contact
复制标题
圆弧面接触重载车钩稳定机构及其应用
DOI：
10.1080/00423114.2013.801500
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发表时间：
2013-07
影响因子：
3.6
通讯作者：
Luo, Shi-hui
中科院分区：
文献类型：
--
作者：
Yao, Yuan;Zhang, Xiao-xia;Zhang, Hong-jun;Luo, Shi-hui
为研究某型圆弧面接触重载车钩的稳定机理，根据摩擦圆理论，分析了车钩在不同偏航角下的受力状态，总结了该车钩的结构特点。建立了包含四台重载机车和三个详细车钩的多体动力学模型来模拟紧急制动过程。此外，还对耦合器偏航不稳定性进行了测试，以研究相关参数对耦合器稳定性的影响。结果表明，该耦合器在小偏航角下表现出自稳定性和较小的侧向力。力线偏航角小于耦合器实际偏航角，从而减小了侧向力和临界不稳定性。增大圆弧接触面的摩擦系数可以提高车钩的稳定性。摩擦系数需要随着最大车钩纵向压缩力的增加而增加。通过增加二系悬挂刚度和减小机车侧限位器间隙，车钩稳定性显着增强。当车钩最大压缩力达到2500 kN时，所需摩擦系数从0.6降低到0.35，显着降低了车钩造成的脱轨风险。耦合器的临界失稳角主要取决于弧接触摩擦系数。当摩擦系数为0.3时，临界失稳角为4~4.5°。仿真结果与机车线路试验结果一致。这些研究对车钩稳定性进行了有意义的改进，并将重载机车与其悬架参数相匹配。
To investigate the stability mechanism of a type of heavy-haul coupler with arc surface contact, the force states of coupler were analysed at different yaw angles according to the friction circle theory and the structural characteristics of this coupler were summarised. A multi-body dynamics model with four heavy-haul locomotives and three detailed couplers was established to simulate the process of emergency braking. In addition, the coupler yaw instability was tested in order to investigate the effect of relevant parameters on the coupler stability. The results show that this coupler exhibits the self-stabilisation and less lateral force at a small yaw angle. The yaw angle of force line is less than the actual coupler yaw angle which reduces the lateral force and the critical instability. An increase in the friction coefficient of the arc contact surfaces can improve the stability of couplers. The friction coefficient needs to be increased with the increase in the maximum coupler longitudinal compressive force. The stability of couplers is significantly enhanced by increasing the secondary suspension stiffness and reducing the clearance of the lateral stopper of the locomotives. When the maximum coupler compressive force reaches 2500 kN, the required friction coefficient reduces from 0.6 to 0.35, which notably lowers the derailment risk caused by the coupler. The critical instability angle of the coupler mainly depends on the arc contact friction coefficient. When the friction coefficient is 0.3, the critical instability angle was 4–4.5°. The simulation results are consistent with the locomotive line tests. These studies establish meaningful improvements for the stability of couplers and match the heavy-haul locomotive with its suspension parameters.
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DOI：
10.1115/1.1541669
发表时间：
2003-03
影响因子：
1.7
作者：
M. Durali;Baabak Shadmehri
通讯作者：
M. Durali;Baabak Shadmehri
影响因子：
3.6
作者：
P. Belforte;F. Cheli;G. Diana;S. Melzi
通讯作者：
P. Belforte;F. Cheli;G. Diana;S. Melzi
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
C. Cole;M. McClanachan;D. Roach;Gerhard. Lesch;F. V. D. Westhuizen;Ted. McLeod
通讯作者：
C. Cole;M. McClanachan;D. Roach;Gerhard. Lesch;F. V. D. Westhuizen;Ted. McLeod
影响因子：
3.6
作者：
Pugi, Luca;Rindi, Andrea;Ignesti, Mirko
通讯作者：
Ignesti, Mirko
DOI：
--
发表时间：
2012
期刊：
Electric Locomotives & Mass Transit Vehicles
影响因子：
--
作者：
Luo Shihui;Csr Zhuzhou
通讯作者：
Luo Shihui;Csr Zhuzhou