{"title":"基于SPH方法的包埋线形装药侵彻性能研究","authors":"Shenhe Zhang, Zhifan Zhang, Longkan Wang, Zhi Zong, Guiyong Zhang","doi":"10.1007/s40571-024-00849-1","DOIUrl":null,"url":null,"abstract":"<div><p>Linear-shaped charges (LSCs) are widely used to incise or demolish target structures in civilian and defense industries. In such tasks as removing submarine pipelines, or cutting thin-walled structures in offshore platforms, causing a long penetration hole is considered as the primary objective for LSCs. For the improvement of the penetration performance of LSCs, especially increasing the penetration length, a novel linear-shaped charge called embowed linear-shaped charge (ELSC) is proposed in this paper. Based on smoothed particle hydrodynamics (SPH) method, numerical models of the ELSC and the LSC with equal charge are established. Then, the results of jet formation and penetration performance of the ELSC and the LSC are compared and analyzed. It is found that the longitudinal length of the jet of the ELSC before penetration is 36.4% larger than that of the LSC. Besides, the length and the width of the hole penetrated by the ELSC are 20.4% and 26.6% larger than those of the LSC.</p></div>","PeriodicalId":524,"journal":{"name":"Computational Particle Mechanics","volume":"12 3","pages":"1421 - 1432"},"PeriodicalIF":2.8000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of penetration performance of embowed linear-shaped charge based on SPH method\",\"authors\":\"Shenhe Zhang, Zhifan Zhang, Longkan Wang, Zhi Zong, Guiyong Zhang\",\"doi\":\"10.1007/s40571-024-00849-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Linear-shaped charges (LSCs) are widely used to incise or demolish target structures in civilian and defense industries. In such tasks as removing submarine pipelines, or cutting thin-walled structures in offshore platforms, causing a long penetration hole is considered as the primary objective for LSCs. For the improvement of the penetration performance of LSCs, especially increasing the penetration length, a novel linear-shaped charge called embowed linear-shaped charge (ELSC) is proposed in this paper. Based on smoothed particle hydrodynamics (SPH) method, numerical models of the ELSC and the LSC with equal charge are established. Then, the results of jet formation and penetration performance of the ELSC and the LSC are compared and analyzed. It is found that the longitudinal length of the jet of the ELSC before penetration is 36.4% larger than that of the LSC. Besides, the length and the width of the hole penetrated by the ELSC are 20.4% and 26.6% larger than those of the LSC.</p></div>\",\"PeriodicalId\":524,\"journal\":{\"name\":\"Computational Particle Mechanics\",\"volume\":\"12 3\",\"pages\":\"1421 - 1432\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-10-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Computational Particle Mechanics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40571-024-00849-1\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS, INTERDISCIPLINARY APPLICATIONS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computational Particle Mechanics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s40571-024-00849-1","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
Study of penetration performance of embowed linear-shaped charge based on SPH method
Linear-shaped charges (LSCs) are widely used to incise or demolish target structures in civilian and defense industries. In such tasks as removing submarine pipelines, or cutting thin-walled structures in offshore platforms, causing a long penetration hole is considered as the primary objective for LSCs. For the improvement of the penetration performance of LSCs, especially increasing the penetration length, a novel linear-shaped charge called embowed linear-shaped charge (ELSC) is proposed in this paper. Based on smoothed particle hydrodynamics (SPH) method, numerical models of the ELSC and the LSC with equal charge are established. Then, the results of jet formation and penetration performance of the ELSC and the LSC are compared and analyzed. It is found that the longitudinal length of the jet of the ELSC before penetration is 36.4% larger than that of the LSC. Besides, the length and the width of the hole penetrated by the ELSC are 20.4% and 26.6% larger than those of the LSC.
期刊介绍：
GENERAL OBJECTIVES: Computational Particle Mechanics (CPM) is a quarterly journal with the goal of publishing full-length original articles addressing the modeling and simulation of systems involving particles and particle methods. The goal is to enhance communication among researchers in the applied sciences who use "particles'''' in one form or another in their research.
SPECIFIC OBJECTIVES: Particle-based materials and numerical methods have become wide-spread in the natural and applied sciences, engineering, biology. The term "particle methods/mechanics'''' has now come to imply several different things to researchers in the 21st century, including:
(a) Particles as a physical unit in granular media, particulate flows, plasmas, swarms, etc.,
(b) Particles representing material phases in continua at the meso-, micro-and nano-scale and
(c) Particles as a discretization unit in continua and discontinua in numerical methods such as
Discrete Element Methods (DEM), Particle Finite Element Methods (PFEM), Molecular Dynamics (MD), and Smoothed Particle Hydrodynamics (SPH), to name a few.
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