摘要：A gap in the mechanical system will make the system produce collision and impact, which will affect the performance and safe operation of the mechanical system. For example, the impact between the wheels and the track in the running of high-speed trains intensifies the vibration of the trains and affects the running stability and comfort of the trains. Therefore, the study of vibro-impact is of great significance to reduce the collision, impact and abrasion of mechanical system, as the same time to improve the safety, lifetime and efficiency of the mechanical system. In recent years, the theory and application of vibro-impact system and gap system have made rapid progress [1-3].
关键词：vibro-impact; train; vibration reduction; Poin_x0002_caré map; Cha
