Polygonal Wear Mechanism of High-Speed Train Wheels Based on Lateral Friction Self-Excited Vibration

Round 1

Reviewer 1 Report

It is my pleasure to review the paper entitled “Polygonal Wear Mechanism of High-Speed Train Wheels Based on Lateral Friction Self-Excited Vibration”. This paper carries out a study on the formation mechanism of wheel polygonalization of high-speed trains and its effect factors by simulations. It is a study of interest. The following suggestions are given for improving this paper.

1. Line 17 “crucial circumstances” should be the “critical condition” .

2. Line 114 “polygonate” should be the “polygonal” .

3. Lack of coordinates in Fig.1 (b).

4. What is the relationship between the equivalent stiffness and damping of the 1/2 model and the whole wheelset?

5. No value was found for parameter σ0 .

6. Formula (27) is not derived correctly

7. According to the simulation, the formulas for Fm and Fs in lines 224 and 225 are incorrect.

8. The applicability of LuGre model to wheel-rail contact should be justified.

9. Some references are not formatted correctly.

10. The figures are poorly organized, incl., Fig. 7, Fig. 10, it is suggested to improve them.

11. The following papers are suggested to be cited for enriching the introduction:

[1] https://doi.org/10.1080/00423111003669045;

[2] https://doi.org/10.1016/j.measurement.2022.111268

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

The article is well written and presents some interesting results that particularly looked at the lateral part of wheel-rail interaction. 

I only have some minor remarks:

(1) Some equations and equation number are not aligned properly. For instance, Equation (1), (2), (9), (10) and (12).

(2) Few equations in the text did not align properly with the sentence, such as, line 199, 200, 279

(3) Please put in a few sentences in section 1 or 4 that give more background of the simulated subject. For example, this study simulated the train wheel from a high speed train (CRH3) etc.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf