Effects of Different Frequency Sensitivity Models of a Viscoelastic Damper on Wind-Induced Response of High-Rise Buildings

Round 1

Reviewer 1 Report

This paper compares different frequency-sensitivity models of a viscoelastic damper for low frequency vibration control. The idea is new. The topic is within the scope of this journal. The paper is well organized and written. Some minor issues are suggested before its acceptance.

1. It is not clear how is the stiffness ratio for the hard or soft damper selected.

2. It is not clear what is the difference between soft and hard brace.

3. Line 44, Wind forces should be wind forces, i.e., without a captical letter.

4. There are some grammar mistakes, e.g., Line 71, Then, compare them with the FD model proposed by Kasai et al. [30].

5. This paper considered vibration control for a single mode. Indeed, the building vibration may be dominated by different modes with increasing wind velocity, e.g., https://doi.org/10.1016/j.jweia.2021.104836. It is therefore also necessary to make the damper effective for several modes. Some relevant discussions are suggested. 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

This work presents an interesting investigation on the effect of different frequency-sensitivity models of a viscoelastic damper on wind-induced response of high-rise buildings. The topic falls into the scope of this journal, and the study is rigorous. This paper deserves to be published after addressing the following comments:

1) The reviewer is a little picky to the abbreviation of the term ‘fractional derivative’, as ‘FD’ is normally used to describe ‘finite difference’ in mechanical engineering. Please re-consider this issue.

2) In the introduction, it is recommended to expand the application of the scope of this study to long-span structures with some literature like [1-2], which will attract readers with different backgrounds. And the viscoelastic damper may be also beneficial to these transportation structures subjected to wind loads.

[1] "Wind deflection analysis of railway catenary under crosswind based on nonlinear finite element model and wind tunnel test." Mechanism and Machine Theory 168 (2022): 104608.

[2] "Wind engineering of large bridges in Japan." Aerodynamics of Large Bridges. Routledge, 2017. 71-79.

3) A practical issue that the reviewer would like to ask for the authors’ opinion is that the viscoelastic damper may have a big initial damping when it works from static to dynamic conditions. Does this big initial damping have an impact on the effectiveness?

4) Is there any experimental tests being done to verify the accuracy of the present reduced model?

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

I think this paper can be published with a good contribution to the field.