CAJ | 학술논문

运用多体动力学方法，建立了包括1辆详细车辆动力学模型，101辆仅考虑纵向自由度简化车辆模型的大秦重载铁路万t列车模型，模型包含车钩力、缓冲器阻抗特性、制动空气波传递，以及装配侧架交叉支撑转向架和径向转向架等因素。在此基础上，分析列车坡道制动的车辆动力学行为、运行安全性，以及制动力对不同转向架的影响。研究结果表明：制动力和闸瓦力改变了轮轨接触和蠕滑关系，线路坡道越大，轮轨磨耗越剧烈，但径向转向架可提高列车运行安全性，降低轮轨磨耗。
운용다체동역학방법，건립료포괄1량상세차량동역학모형，101량부고필종향자유도간화차량모형적대진중재철로만t열차모형，모형포함차구력、완충기조항특성、제동공기파전체，이급장배측가교차지탱전향가화경향전향가등인소。재차기출상，분석열차파도제동적차량동역학행위、운행안전성，이급제동력대불동전향가적영향。연구결과표명：제동력화갑와력개변료륜궤접촉화연활관계，선로파도월대，륜궤마모월극렬，단경향전향가가제고열차운행안전성，강저륜궤마모。
Based on the multi-body dynamic method,a 10,000 tons train dynamic model includes one compli-cated car model with cross-braced bogie or radial bogie,and other 101 simple car models with only the longitu-dinal DOF (Degree of freedom)on the Da-Qin heavy haul lines were established.The coupler forces,buffer damping and braking air wave characteristics,were take into consideration.The vehicle dynamics,safety and wheel/rail wear of different type bogies were investigated when the train brakes on ramp lines.The results show that since the braking forces and brake shoe forces change wheel-rail relationship and creep,the wheel-rail wear is more severe on ramp lines,while the radial bogie on the whole can improve the running safety and wear.