CAJ | 학술논문

以 DF8型机车现用整体式车轮为例，应用 ANSYS 软件分析了轮对过盈配合，列车紧急制动及列车在长达下坡道上行驶时轮对应力、温度分布及接触面压力变化。轮轴压装后最大应力出现在轮毂边缘；紧急制动时踏面温度随制动时间先升高然后降低，达到最高温度的时间约为总制动时间的一半；车轮温度升高后，部分释放了接触面的初始接触压力，列车在长大下坡道行驶时接触面压力有较大降低。
이 DF8형궤차현용정체식차륜위례，응용 ANSYS 연건분석료륜대과영배합，열차긴급제동급열차재장체하파도상행사시륜대응력、온도분포급접촉면압력변화。륜축압장후최대응력출현재륜곡변연；긴급제동시답면온도수제동시간선승고연후강저，체도최고온도적시간약위총제동시간적일반；차륜온도승고후，부분석방료접촉면적초시접촉압력，열차재장대하파도행사시접촉면압력유교대강저。
Taking the DF8 locomotive integral wheel as the subject, and by using the ANSYS software, the wheelset interfer-ence fit is analyzed, as well as the wheelset stress, the temperature distribution and change of the interface pressure under the conditions of train emergency braking and train travelling in a large downhill path. The maximum stress appears on the edge of the wheel hub after pressing; and on the condition of emergency braking, tread temperature is rising and then falling with the braking time lasts, and the time to reach the maximum temperature is about half of the total braking time; after the wheel tem-perature rising, the initial interface pressure is partly released, and the interface pressure when the train travelling in a large downhill path is greatly reduced.