Lin Jing, Kaiyun Wang*, Wanming Zhai. Impact vibration behavior of railway vehicles: a state-of-the-art overview. Acta Mechanica Sinica, 2021, 37: 1193–1221.
//doi.org/10.1007/s10409-021-01140-9

Fig. 1. Typical irregularities of wheel OORs and rail [26,27,28,29]