The title should have been more specific and informative. I suggest using the numerical method term such as FEM.

The introduction well describes the powder metallurgy (PM) production process but does not provide any information on the Finite Element Method (FEM) Modelling on Powder Compaction. Is there no literature on FEM modelling of compaction? There are already several papers ( Wu et al.; Mazor et al.; Michrafy et al.;) that described the FEM modelling of powder compaction. The introduction in this manuscript should have been more comprehensive and informative.

In addition, the authors should improve the readability and scientific soundness in this section. It is not clear to the reader the goal of our manuscript. Please improve the scientific soundness readability of this manuscript.

The Drucker-Prager Cap (DPC) model has been described in sec. 2. However, the DPC model consists of three lines or surfaces. The authors have mentioned the shear failure line and hardening cap line. Why the transition line is ignored in this manuscript.

Just wondering if authors try to investigate how numbers of element effecting the results. It's quite clear from previous studies that actually meshing can drastically affect all results such as distribution of stress or density as well.

The calibration procedure of model parameters is not clear in this methodology section. How parameters such as Cap eccentricity "R" and hydrostatic pressure stress "pb" were calculated? What parameter such as d, Betha, pb, pa, R actually represent? Just wondering if authors consider all principal stresses in this model.

The results section should be improved reporting more detail analysis, the reviewer suggestions are to perform detailed analysis . In Fig. 10 (page 85), the reason of more homogenous distribution for double-sided-compacting is not mentioned clearly, and why the maximum relative density lie at bottom for double -sided and at top for single sided. Would it be possible to analyze and mention in the description?

What loading condition author used in this simulation? Normally, loading condition affects the simulation results considerably. What make sure that this the right value.

The description section is too vague, please considered to emphasize this section, clarify your message this could give an impact on the paper’s archival.

No summary of obtained results is given. Please add 1/ 2 lines mentioning what you achieved from this simulation.