{"title":"压装过程对战斗部弧形装药质量的影响研究","authors":"Yuhao Wang, Shutao Wang, Shuhong Ba","doi":"10.1007/s10035-025-01540-9","DOIUrl":null,"url":null,"abstract":"<div><p>The energy generated by the explosion of the arc-shaped charge spreads relatively evenly in all directions, when the density of the explosive charge is uniform and compact, the energy released by the reaction is more concentrated and stable, thereby achieving a more efficient explosion effect. By establishing a simulation model of the powder compaction process, the powder displacement, relative density variation, and stress distribution of the formed explosive charge during its compaction process were analyzed, and the effects of process parameters such as pressing rate, pressure holding time, number of compaction times, and mold roughness on the density of arc-shaped charges were studied. The results show that: The stress of the formed explosive column is mainly concentrated at the bottom end of the upper die punch; From top to bottom, the relative density of the explosive charge shows a wave-like decreasing trend, and the minimum density appears at the interface between the lower die punch and the female mold; In the complete compaction process, the influence of different compaction rates and pressure holding times on the density of the formed explosive column does not follow an obvious pattern. However, it is certain that the pressure holding process is crucial, as it can enhance the density and uniformity of the explosive column; With an increase in the number of compaction times, the relative density of the explosive charge gradually increases; Reducing the roughness of the mold can make the density distribution of the formed explosive column more uniform.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49323,"journal":{"name":"Granular Matter","volume":"27 3","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on the influence of press-loading process on the quality of arc-shaped charges in warheads\",\"authors\":\"Yuhao Wang, Shutao Wang, Shuhong Ba\",\"doi\":\"10.1007/s10035-025-01540-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The energy generated by the explosion of the arc-shaped charge spreads relatively evenly in all directions, when the density of the explosive charge is uniform and compact, the energy released by the reaction is more concentrated and stable, thereby achieving a more efficient explosion effect. By establishing a simulation model of the powder compaction process, the powder displacement, relative density variation, and stress distribution of the formed explosive charge during its compaction process were analyzed, and the effects of process parameters such as pressing rate, pressure holding time, number of compaction times, and mold roughness on the density of arc-shaped charges were studied. The results show that: The stress of the formed explosive column is mainly concentrated at the bottom end of the upper die punch; From top to bottom, the relative density of the explosive charge shows a wave-like decreasing trend, and the minimum density appears at the interface between the lower die punch and the female mold; In the complete compaction process, the influence of different compaction rates and pressure holding times on the density of the formed explosive column does not follow an obvious pattern. However, it is certain that the pressure holding process is crucial, as it can enhance the density and uniformity of the explosive column; With an increase in the number of compaction times, the relative density of the explosive charge gradually increases; Reducing the roughness of the mold can make the density distribution of the formed explosive column more uniform.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":49323,\"journal\":{\"name\":\"Granular Matter\",\"volume\":\"27 3\",\"pages\":\"\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Granular Matter\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10035-025-01540-9\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Granular Matter","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10035-025-01540-9","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Research on the influence of press-loading process on the quality of arc-shaped charges in warheads
The energy generated by the explosion of the arc-shaped charge spreads relatively evenly in all directions, when the density of the explosive charge is uniform and compact, the energy released by the reaction is more concentrated and stable, thereby achieving a more efficient explosion effect. By establishing a simulation model of the powder compaction process, the powder displacement, relative density variation, and stress distribution of the formed explosive charge during its compaction process were analyzed, and the effects of process parameters such as pressing rate, pressure holding time, number of compaction times, and mold roughness on the density of arc-shaped charges were studied. The results show that: The stress of the formed explosive column is mainly concentrated at the bottom end of the upper die punch; From top to bottom, the relative density of the explosive charge shows a wave-like decreasing trend, and the minimum density appears at the interface between the lower die punch and the female mold; In the complete compaction process, the influence of different compaction rates and pressure holding times on the density of the formed explosive column does not follow an obvious pattern. However, it is certain that the pressure holding process is crucial, as it can enhance the density and uniformity of the explosive column; With an increase in the number of compaction times, the relative density of the explosive charge gradually increases; Reducing the roughness of the mold can make the density distribution of the formed explosive column more uniform.
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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