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Abstract:The integrity of bolted joint in braking disc system is critical to the good quality of braking performance. A thermo-mechanical coupling finite element model is established to investigate the load variation of bolted joint in axle braking disc of railway vehicle under continuous downhill braking condition. The transient temperature gradient in the brake disc is the key mechanism for the variation of bolt loads. The bolt tension drops firstly and then bounces back, while the bendingdoi:10.3901/jme.2018.12.071 fatcat:gix33poqc5evtalhnjbavt5ke4