MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
MODEL SIMUL MATER SC
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18年2月11号投的，很快就awaiting referee reports，到2018年3月8号，查询状态就是awaiting decision，晚上十一点多发现reject了。。。纯模拟没有试验，感觉很受伤害。
COMMENTS FROM EDITORIAL BOARD:
Comments to the Author:
This work is, at the very best, at the borders of the scope of MSMSE, which reads "new research work that advances the understanding and prediction of material behaviour at scales from atomistic to macroscopic through modelling and simulation." The main reason for rejecting this manuscript is that the model contains no aspect of structure at all; instead, it uses a rule-of-mixture approach together with a very old pressure-dependent yield function. The modeling referred to dates back to the 1970, and does not recognize developments in the since the 80's by Riedel and others.
Additional critical issues:
a) The authors emphasize a difference in the efficiency of single versus double action compaction, that is motivated by Fig. 4. They do no, however, give any explanation for this difference. In fact, the observations is surprising since double action compaction can be regarded as single action compaction relative to the symmetry plane. The only difference then is the length over which the die wall friction works. If this line of reasoning is correct, there should be an inherent length effect in compation, and I would be surprised if this is not known in the field.
b) The data are fit to empirical expressions with at least five decimals. In view of the crudeness of the material model, the number of significant digits must be much smaller.
- It is not _in_ the FEA analysis that Young's modulus and yield strength are calculated by a Voigt mixture, but _for the purpose of_.
- the definition of the relative density (in eq. (6)) comes much later than its first mention (above (3)).
- the origin of the expressions (11) and (12) is unclear.