Simulation Analysis and Test on the Effect of Picking Up the Residual Film of Typical Film Lifting Parts

Round 1

Reviewer 1 Report

The agronomic technology of the whole plastic film mulching on double ridges has been widely promoted in the arid region of northwest China, which has caused serious residual film pollution in the field. In order to evaluate and screen the working parts suitable for the recovery of residual film on double ridges, the author applied the discrete element method to establish the film lifting parts-film-soil simulation interaction model, and analyzed the effect of residual film picking and the operation resistance of the third order shovel, hug plate and elastic tooth film lifting parts. The research has good significance and innovation, and has a good guidance for improving the simulation modeling of mechanized film recovery in the arid region of northwest China. It is suggested to publish after minor review, and the specific modification suggestions are as follows:

1. The language description of the paper strives to be concise, smooth and logical. It is recommended to further sort out the language description and delete words that are irrelevant or far from the topic;

2. The terms that appear many times in the paper need to be carefully checked and uniformly handled, check the grammar errors in the paper, and further modify the full paper;

3. For the film lifting parts in Figure 3, it is recommended to replace the picture with the consistent view relationship;

4. According to "2.2 Typical film lifting parts ", there are three sets of film lifting elastic tooth. In "3.2 Resistance analysis of residual film picking operation ", the horizontal operation resistance should have obvious changes. However, within 1 m of the operation distance of the resistance analysis part, it is only the operation resistance of the first row of film lifting elastic tooth, is it representative, and is the simulation reasonable?

5. The operating parameters of the film lifting machine in the field test need to be explained in detail. In addition, the corresponding relationship between the field test and the simulation should be further clarified;

6. The analysis of the working resistance of the film lifting parts is the key to evaluate the working effect of the film lifting parts. It is recommended to further supplement and improve this part.

Author Response

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Reviewer 2 Report

In order to prove the effect of typical film lifting parts on residual plastic film recovery performance, this manuscript conducted a numerical simulation to evaluate and select the working parts suitable for residual plastic film recovery and improve the recovery efficiency, and conducted an experiment to verify the result. The manuscript topic is quite interesting and would bring some innovation to the field. I would like to comment some minor corrections:

 

1. It is suggested to further concise some language descriptions of the article and clarify the relevant operation mechanism;

2. The size relationship of the film lifting parts has great influence on the film lifting effect, so it is suggested to make further supplements;

3. There are many grammatical errors in the paper. It is suggested to check the full paper carefully and revise it in a standardized way;

4. In terms of seed bed modeling, have you considered the connection between soil and plastic film particles? If so, please explain what the connection model is?

5. In the part of operation resistance analysis, the horizontal resistance and vertical resistance of particles on the film lifting parts in the simulation operation process are extracted, but the vertical operation resistance analysis is missed, it is suggested to be supplemented and improved;

6. The field experiment verified the operation effect of the selected hug plate film lifting parts, the description of the prototype operation parameters should correspond to the simulation motion parameters.

Author Response

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Reviewer 3 Report

In this study, the interaction between soil, film and machine was analyzed by DEM and their behavior was clarified. It is the valuable research that visually clarifies the movement of film and soil, and also conducts mechanical analysis.

From the viewpoint of practicality, the following points should be added.　Film recovery can be divided into two actions, film lifting and collecting, and the evaluation in this analysis is based on the results of film lifting. Please explain how you think about the impact of the analysis results on film collecting.

Author Response

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