Application of a Kdamper with a Magnetorheological Damper for Control of Longitudinal Vibration of Propulsion Shaft System

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Comments for author File: Comments.pdf

Comments on the Quality of English Language

Minor revision

Author Response

Cover Letter

 

Dear Editors and all reviewers:

 

We gratefully appreciate the editors and all reviewers for their time spend making positive and constructive comments. These comments are all valuable and helpful for revising and improving our manuscript entitled “Application of a Kdamper-MRD for control of longitudinal vi-bration of propulsion shaft system” (ID: applsci-3005350), as well as the important guiding significance to our researches.

 

We have studied comments carefully and have made correction which we hope meet with approval. Revised portion are marked in red in the revised manuscript. The summary of corrections and the responses to the reviewer's comments are listed in the Revison Report.

 

Thank you and best regards.

 

Yours sincerely,

Wu Weiguo

E-mail: 273133@whut.edu.cn

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

            The paper may be published after some minor corrections:

            1. The formulae (2) are original? How are they obtained?

        2. Equations (3) mark the equations of motion, not the equation of motion.

            3. Formula (5) is original? How is it obtained?

            4. The authors have to present some more details concerning the points P and Q (paragraph after formula (6)).

            5. Formula (7) is an original one? How was it obtained?

            6. Some details must be offered about the formula (13).

            7. Why the authors assume the expression (14)?

Author Response

Cover Letter

 

Dear Editors and all reviewers:

 

We gratefully appreciate the editors and all reviewers for their time spend making positive and constructive comments. These comments are all valuable and helpful for revising and improving our manuscript entitled “Application of a Kdamper-MRD for control of longitudinal vi-bration of propulsion shaft system” (ID: applsci-3005350), as well as the important guiding significance to our researches.

 

We have studied comments carefully and have made correction which we hope meet with approval. Revised portion are marked in red in the revised manuscript. The summary of corrections and the responses to the reviewer's comments are listed in the Revison Report.

 

Thank you and best regards.

 

Yours sincerely,

Wu Weiguo

E-mail: 273133@whut.edu.cn

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

Authors have analysed the ship noise from considering the longitudinal vibration of propulsion shaft design for reducing it. With simulations, a modification by improving the vibration damping system (Kdamper-MRD) demonstrate the feasibility of the proposed design.

The state of the art is relevant for this topic. Nevertheless, as authors indicated in abstract, the longitudinal vibration is one of the most important causes for ship noise. Authors should add an extended state of the art with these causes and adding more references for justifying that this is the most important cause for ship noise at low frequencies.

Line 131, add the Matlab version and add a reference.

In 331-335 lines, please discuss about the increase of transmissibility of kdamper-MRD out of 21-26Hz approximately. Also discuss and compare the obtained results with other published research (a table if possible).

In the discussion section, please, add the limitation of the study and possible future works derived from this work or for continuing reducing the ship noise actuating in other important causes.

 

Author Response

Cover Letter

 

Dear Editors and all reviewers:

 

We gratefully appreciate the editors and all reviewers for their time spend making positive and constructive comments. These comments are all valuable and helpful for revising and improving our manuscript entitled “Application of a Kdamper-MRD for control of longitudinal vi-bration of propulsion shaft system” (ID: applsci-3005350), as well as the important guiding significance to our researches.

 

We have studied comments carefully and have made correction which we hope meet with approval. Revised portion are marked in red in the revised manuscript. The summary of corrections and the responses to the reviewer's comments are listed in the Revison Report.

 

Thank you and best regards.

 

Yours sincerely,

Wu Weiguo

E-mail: 273133@whut.edu.cn

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Comments and Suggestions for Authors

The paper has been improved, but I recommend to be added a clear discussion and comparission between the obtained results and the other published research (a table if possible).

Author Response

Dear Reviewer,

Thank you very much for your prompt and constructive feedback on my manuscript. I appreciate the opportunity to clarify and improve my work based on your insightful comments.

In response to your suggestion to discuss and compare the results obtained with the currently published research, I would like to clarify that I have indeed compared the Voigt Dynamic Vibration Absorber (DVA) as published in Figures 17, 18, and Table 7 of my manuscript. These sections discuss the performance of several shock absorbers under both harmonic and random excitations.

The theoretical design parameters of the dynamic vibration absorber in my study are derived based on the fixed-point expansion theory. As you pointed out, different objective functions yield different optimal parameters, making it inevitable that the optimal parameters for the Kdamper DVA in my research will differ from those in other studies. This is an inherent aspect of the optimization process for dynamic vibration absorbers.

In my manuscript, I have focused on comparing the Kdamper DVA under optimal parameter design and under a switch control strategy with other research on the Voigt DVA. This comparison highlights the advantages and potential applications of the Kdamper DVA in various scenarios.

If there are specific aspects or sections that you feel are still lacking or could be expanded upon, I would be grateful if you could point these out. Your detailed guidance will help me to address any shortcomings and ensure that the manuscript meets the highest standards of academic rigor.

Once again, thank you for your valuable feedback. I look forward to your further suggestions and hope to provide a revised manuscript that addresses all your concerns comprehensively.

Sincerely,
Wu Weiguo

Author Response File: Author Response.pdf