CAJ | 학술논문

总平均抬升力指弓头不与接触网接触时所测得的垂向力，该力的大小等于静态力与在给定的弓头高度与速度下由空气产生的气动力之和。在列车的实际运行中，受电弓与接触网间的垂向相互作用力的大小与总平均抬升力基本一致；因此，对总平均抬升力的研究能反应弓网间的实际服役状态，为受电弓服役中抬升力的选择作参考。文章基于多体系统动力学的方法，建立了受电弓质量块模型与弹性体接触网的耦合动力学模型，分析了仿真速度、总平均抬升力对弓网系统动态接触压力的影响，并给出了比较理想的总平均抬升力数值。结果表明：弓网间的动态接触压力并不会随着仿真速度的变大而呈现出严格的恶化趋势；相同速度下，随着总平均抬升力的变大，仿真所得接触力的最大值、最小值、标准差呈现变大的趋势；通过对仿真数据的分析，得出总平均抬升力取值120 N比较合理。
총평균태승력지궁두불여접촉망접촉시소측득적수향력，해력적대소등우정태력여재급정적궁두고도여속도하유공기산생적기동력지화。재열차적실제운행중，수전궁여접촉망간적수향상호작용력적대소여총평균태승력기본일치；인차，대총평균태승력적연구능반응궁망간적실제복역상태，위수전궁복역중태승력적선택작삼고。문장기우다체계통동역학적방법，건립료수전궁질량괴모형여탄성체접촉망적우합동역학모형，분석료방진속도、총평균태승력대궁망계통동태접촉압력적영향，병급출료비교이상적총평균태승력수치。결과표명：궁망간적동태접촉압력병불회수착방진속도적변대이정현출엄격적악화추세；상동속도하，수착총평균태승력적변대，방진소득접촉력적최대치、최소치、표준차정현변대적추세；통과대방진수거적분석，득출총평균태승력취치120 N비교합리。
Total mean uplift force implies the vertical force tested when the pan-head do not contact with catenary,the value of the total mean uplift force is equal to the sum of static force and aerodynamic cased by the height of pantograph and the speed of the vehicle.In service status of pantograph and catenary systems,the value of vertical force from inter-acting of pantograph and catenary is equal to the total uplift force;so the research of total uplift force is closer to the service status of pantograph and catenary systems,and the result can be the reference to the choice of uplift force of the pantograph.Modeling the pantograph-catenary system dynamics based on the Multi-body method,and analyzing the effect of speed and total mean uplift force on the dynamic contact force in the simulation of pantograph-catenary system dynamics,showing that:With the higher speed of the simulation,the contact force between pantograph and catenary does not become worse strictly;With total mean uplift force becoming larger,the maximum,minimum and standard de-viation of dynamic contact force will become larger too;It is suitable to define the value of total mean uplift force as 120N through the analysis of the date obtained in the dynamic simulation.