State Observer for Deflections in Rectangular Flat Plates Simply Supported Subjected to Uniform and Hydrostatic Pressure

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Review of the article entitled: State Observer for Deflections in Rectangular Flat Plates Simply Supported Subjected to Uniform and Hydrostatic Pressure

 

The article is very interesting, although I spent quite a bit of time to get through it because of the complicated equations, which in my opinion are not necessary to such an extent. The authors have invested a lot of effort and time in the research, which they have condensed into an interesting article.

However, I will give some key comments:

• The introduction repeats the quotes on page 77 Volmir [8] and Volmir [16] on page 85. It is necessary to separate the works in the article.
• Tables 1, 2 and 3 are not necessary, the content can be written in a sentence or two
• From lines 61 to 74 the literature is not cited correctly
• Figure 1 is not necessary.
• I suggest that tables 1, 2 and 3 and figure 1 be transformed into State of the art.
• Chapter 2 is too extensive and there is no need for such a detailed description of already known methods.
• In tables 4 and 5, I don't know where the W-sum belongs?
• Figure 4 is not clear.
• A discussion is absolutely necessary for such extensive work and results and should be added to the work.
• The conclusion is a summary of the work, I also expect that the limitations and the direction in which this research can be expanded will be added.

 

Otherwise, it is a very original and complex research.

Author Response

 "Please see the attachment."

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

This study presents and validates a computational model designed to observe and predict static deflection in simply supported rectangular flat plates under uniform and hydrostatic pressure. The model is developed using Kirchhoff’s plate theory and solved analytically via double Fourier series. Results from the analytical model are compared with simulations using the Finite Element Method (FEM) in ANSYS Workbench 17. The plates are assumed to be isotropic and loaded within their elastic limit. This work aims to support the implementation of state observers for active structural control systems.

But it’s worth noting a few important remarks on this

Comment1:While the paper claims innovation through the use of a double Fourier series for analyzing deflection, this technique is well-established in classical plate theory (Navier method). The manuscript does not clearly demonstrate how its approach significantly advances beyond existing analytical solutions or hybrid FEM-analytical models in recent literature.

Comment2:The convergence study in Section 4 is limited to mesh refinement. However, it does not provide an error estimate with respect to the analytical solution for both load types. Furthermore, the use of only the first three Fourier terms may not ensure sufficient accuracy, especially for more complex or real-world loading distributions.

Comment3:The validation using ANSYS is performed only along the longest edge of the plate. It would strengthen the work if deflections were validated at multiple locations, including corners and diagonals, to ensure model consistency across the domain.

Comment4:The introduction devotes excessive space to a historical review of plate theory, including outdated or non-critical references. This section should be streamlined to make room for a clearer statement of the paper’s specific contribution and the research gap it addresses.

Comment5:The paper does not adequately explain how "simply supported" boundary conditions were implemented in the FEM model (e.g., constraints applied in specific directions). This is critical, as incorrect boundary representation could lead to misleading comparisons with analytical results.

Comment6:There are frequent grammatical and syntactic issues throughout the manuscript (e.g., inconsistent tense, awkward phrasing, and run-on sentences). These affect readability and require substantial language polishing to meet publication standards.

Comments on the Quality of English Language

The manuscript would benefit from a thorough English language revision. While the overall meaning is generally understandable, the text contains numerous grammatical errors, awkward sentence constructions, inconsistent verb tenses, and occasional wordiness that hinder clarity and readability.

Specific issues include:

• Run-on and overly complex sentences that obscure the main ideas.
• Incorrect or unclear technical phrasing (e.g., "twisted over its plane" instead of “experiences torsion”).
• Repetitive or redundant expressions, particularly in the introduction and historical background.

It is recommended that the authors seek assistance from a professional English editing service or a native English-speaking colleague with technical expertise to improve the manuscript’s clarity, precision, and academic tone.

Reconsider after major revisions (substantial revisions to text or experimental methods needed)

Author Response

"Por favor vea el archivo adjunto."

Round 2

Reviewer 2 Report

Comments and Suggestions for Authors

All issues have been addressed. The manuscript can be accepted in the present form.