Xianrui Kong, Qing Cao, Zihan Zhao, Zhiyou Niu, Jing Liu
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引用次数: 0
Abstract
It is a common phenomenon that feed pellet is broken by compression and impact during the processing of manufacturing and production. At present, the breakage characteristics of feed pellet under repeated loading are not clear. In order to predict the breakage probability of feed pellet accurately, the compound feed for piglets feeding was selected to conduct repeated compression and repeated impacts tests in this paper. Firstly, the quasi-static repeated compression tests were conducted, and it was found that the cyclic stiffening occurred due to the densification of feed pellet during the repeated compression. Secondly, the quasi-static repeated compression tests in radial and axial direction were performed under different loading forces. And the results showed that the compressive energy required for feed pellet breakage increased with the decrease of loading force. Then, two-parameter Weibull function was used to fit the relationship between mass-specific compressive energy and breakage probability. And the fitting results R2 were all greater than 0.9 and the fitting effect was good. Finally, dynamic repeated impacts tests with different impact velocities were conducted. The results showed that the impact times required for feed pellet to reach the same breakage probability decreased, with the increase of impact velocity. Three-parameter Weibull function was used to fit the relationship between mass-specific impact energy and breakage probability. Good fitting effect was obtained and R2 was greater than 0.95. The fitting results can predict the breakage probability of feed pellet in the process of repeated loading, and provide guidance for the feed pellet production and transportation.
Graphical abstract
The breakage characteristics of feed pellet under reteated loading
期刊介绍：
Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science.
These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations.
>> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa.
The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.
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