Propellants, Explosives, Pyrotechnics最新文献_第9页

Combustion of ammonium dinitramide based solid propellant with PBT as energetic binders 以二硝基胺为基础的固体推进剂与作为高能粘合剂的 PBT 一起燃烧

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-15 DOI: 10.1002/prep.202300231

Hai‐yang Yu, Lei Huang, Zhan‐bin Nie, Wei‐xiang He, Xing Zhou

{"title":"Combustion of ammonium dinitramide based solid propellant with PBT as energetic binders","authors":"Hai‐yang Yu, Lei Huang, Zhan‐bin Nie, Wei‐xiang He, Xing Zhou","doi":"10.1002/prep.202300231","DOIUrl":"https://doi.org/10.1002/prep.202300231","url":null,"abstract":"Focusing on a new kind of solid propellants, which takes the ammonium dinitramide (ADN) as the high‐energetic oxidant, and 3,3‐bis(azidomethyl)oxetane and tetrahydrofuran copolymers (PBT) as the high‐energetic fuel binder, the burning rates and the theoretical performance of the propellant were measured under different ADN contents, ADN sizes and pressures. The burning rates increased from 7.9 mm/s to 117.4 mm/s and 49.1 mm/s to 74.2 mm/s when the pressure increased from 0.1 MPa to 10 MPa and from 12 MPa to 20 MPa separately, with a singularity in the pressure dependence of the burning rate at around 10 MPa. In terms of the effect of the ADN content, under the experiment pressures from 0.5 MPa to 5.0 MPa, the burning rates of the propellant were promoted by the increase of the oxidizer loading in a range of 50 wt% to 75 wt%, with a transition from a kinetically‐controlled reaction to a diffusion‐controlled one. Within the condition scope of this study, no obvious effect of the ADN sizes on the propellant combustion properties was observed. This could be attributed to the solid‐liquid mixed multiphase layer and the binder which served as a heat sink for the smaller ADN particles.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140154109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical study of the interfacial force‐field and thermodynamic properties for HMX‐Estane mixture explosives HMX-Estane 混合物爆炸物界面力场和热力学特性的理论研究

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-15 DOI: 10.1002/prep.202300265

Yao Long, Jun Chen

引用次数: 0

IGMH‐based research on the intramolecular weak interaction of TKX‐50 基于 IGMH 的 TKX-50 分子内弱相互作用研究

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-08 DOI: 10.1002/prep.202300272

Chunhai Yang, Huilong Dong, Xue Li, Ning Zhou, Yi Liu, Xiuli Hu, Yinjun Wang

{"title":"IGMH‐based research on the intramolecular weak interaction of TKX‐50","authors":"Chunhai Yang, Huilong Dong, Xue Li, Ning Zhou, Yi Liu, Xiuli Hu, Yinjun Wang","doi":"10.1002/prep.202300272","DOIUrl":"https://doi.org/10.1002/prep.202300272","url":null,"abstract":"To further comprehensively study the intramolecular weak interaction of the gaseous TKX‐50 molecule, the two conformations of the TKX‐50 molecule were analyzed via the Independent Gradient Model based on the Hirshfeld Partition (IGMH) method based on the B3LYP/6‐311 g (d,p) level for geometry optimization and for single point energy. The conclusions manifest that the weak interactions between these fragments are mainly composed of hydrogen bonds and van der Waals interactions. From the strength of inter‐fragment interactions formed by contributing atomic pairs and their percentage contributions, these H bonds, together with dispersion‐dominated weak interactions provided by non‐direct facing atomic pairs near these H bonds, dominate the inter‐fragment interaction resulting in the stability of the molecular structure. Meanwhile, the weak interactions enclosed by end‐atoms of two fragments not only include the contributions provided by inter‐fragment atomic pairs of two fragments but also include the contributions provided by intra‐fragment atomic pairs of fragment 1. For conformation II, due to the H transfer between fragments, a pair of symmetric H bonds at the corresponding regions are extremely strong to reach the level of covalent bond while the two groups −OH at the other end become looser, resulting in conformation II own lower energy. Differences in inter‐fragment interactions between two conformations were essentially brought by the stronger electron‐withdrawing ability of atom O than that of atom N.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using maximum likelihood estimation approach to adjust parameters of CARTE thermochemical code. 使用最大似然估计方法调整 CARTE 热化学代码的参数。

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-07 DOI: 10.1002/prep.202300316

V. Dubois, X. Bidault, R. Sorin

引用次数: 0

Making Progress Towards « Green » Propellants – Part III 向 "绿色 "推进剂迈进--第三部分

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-07 DOI: 10.1002/prep.202300303

Rowan Dobson, Patrick Folly, Alexandre Sarbach, Romuald Van Riet, Bertrand Roduit, Jörgen Sandström, Erik Tunestål, Amy Carlström, Alain Dejeaifve

{"title":"Making Progress Towards « Green » Propellants – Part III","authors":"Rowan Dobson, Patrick Folly, Alexandre Sarbach, Romuald Van Riet, Bertrand Roduit, Jörgen Sandström, Erik Tunestål, Amy Carlström, Alain Dejeaifve","doi":"10.1002/prep.202300303","DOIUrl":"https://doi.org/10.1002/prep.202300303","url":null,"abstract":"Stabilisers are an integral part of a propellant composition. They are essential for ensuring the chemical stability of nitrate‐ester based propellants, preventing oxidation, chain scission and uncontrolled heat generation. Progress is being made, especially in Europe, with REACh legislation (1907/2006) to use more environmentally‐friendly compounds. New stabilisers with a greener environmental profile and producing less toxic daughter products have been investigated by several groups, and several compounds demonstrated even better performances – more chemical stability and therefore longer shelf lives than formulations with the currently‐used stabilisers. Additionally, the good efficiencies and lower toxicities of the daughter products of the “green” stabilisers are also evaluated. This paper is a continuation of our previous work and demonstrates that for industrially‐manufactured propellants, that the tests performed by four different entities validate the stability and compatibility of the propellants, investigated previously on a laboratory scale, providing the community with safer formulations for the environment and health.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140069998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al 区分反应材料化学能和动能的方法：聚四氟乙烯/六氟化硫作为聚四氟乙烯/铝的惰性替代品

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-07 DOI: 10.1002/prep.202300307

Jie Zhou, Xufeng Zhao, Shaohong Wang, He Yang, Aiguo Pi

{"title":"An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al","authors":"Jie Zhou, Xufeng Zhao, Shaohong Wang, He Yang, Aiguo Pi","doi":"10.1002/prep.202300307","DOIUrl":"https://doi.org/10.1002/prep.202300307","url":null,"abstract":"To distinguish between the kinetic and chemical contributions in the impact of PTFE/Al, this study explores the feasibility of introducing an inert substitute for PTFE/Al by substituting aluminum (Al) with inert materials. Three specimens were fabricated through a process involving mixing, compression, and sintering of raw materials The mechanical properties of these specimens were assessed. Dynamic fragmentation tests of PTFE/Al and PTFE/LiF specimens were performed. These results further substantiate the potential of PTFE/LiF as an inert alternative to PTFE/Al, the two materials exhibit comparable fragmentation distribution characteristics. A preliminary exploration of the energy release in both materials was conducted via vented chamber calorimetry tests. The findings reveal that, at an impact velocity of roughly 650 m/s, only 66.9 % of the materials were deposited into the chamber, with a mere 17.8 % being initiated, about 88.9 % of the total deposited energy results from the chemical reaction energy within the PTFE/Al materials. Importantly, this method demonstrates promise for further application in energy release analysis experiments for various PTFE/Al‐based reactive materials. These findings are beneficial for evaluating the energy release characteristics of reactive fragments on typical targets and lay the foundation for refining energy release models of such materials in future research.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Jones‐Wilkins‐Lee equation of state for high explosive products 关于高爆炸产品的琼斯-威尔金斯-李状态方程

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-07 DOI: 10.1002/prep.202300223

Gabriel Farag, Ashwin Chinnayya

{"title":"On the Jones‐Wilkins‐Lee equation of state for high explosive products","authors":"Gabriel Farag, Ashwin Chinnayya","doi":"10.1002/prep.202300223","DOIUrl":"https://doi.org/10.1002/prep.202300223","url":null,"abstract":"The Jones‐Wilkins‐Lee (JWL) model is a widely used Equation Of State (EOS) in the literature to model high explosive products. It is based on exponentially decaying isentropes in the pressure‐volume diagram, completed by an additional term meant to recover an ideal‐gas behavior for large expansions where exponential terms are negligible. A step‐by‐step analysis of the EOS is proposed. Starting from the main isentrope, the constant Grüneisen, and constant isochoric heat capacity, the JWL expressions of pressure, temperature, sound speed, specific internal energy, specific entropy and specific enthalpy are derived. For a specific set of JWL parameters meant to model HMX products, various thermodynamic fields are investigated in pressure–volume and temperature–volume planes. The positivity of pressure and temperature, the convexity, the thermodynamic stability, and the monotonicity along an Hugoniot are investigated in order to characterize the JWL domain of validity. For each of these constraints, different regions of validity are found. Besides presenting a study of the JWL model and its limits, this work also provides a standalone presentation and derivation containing the necessary materials for the understanding and for the use of the JWL EOS in reactive hydrodynamic simulations of condensed phase explosives.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of multi‐scale mechanical behavior research on composite solid propellants based on data‐driven approach 基于数据驱动方法的复合固体推进剂多尺度力学行为研究综述

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-03-07 DOI: 10.1002/prep.202300287

Bin Yuan, Hongfu Qiang, Xueren Wang, Tiezhu Chen

{"title":"Review of multi‐scale mechanical behavior research on composite solid propellants based on data‐driven approach","authors":"Bin Yuan, Hongfu Qiang, Xueren Wang, Tiezhu Chen","doi":"10.1002/prep.202300287","DOIUrl":"https://doi.org/10.1002/prep.202300287","url":null,"abstract":"Composite solid propellant is a kind of viscoelastic composite with high filling ratio and multi‐scale composition characteristics, and its macroscopic mechanical properties strongly depend on the microstructure of the propellant materia. However, with the increasing complexity of composition, structure and properties of composite solid propellants, the traditional research paradigm based on experimental observation, theoretical modeling and numerical simulation has encountered new scientific challenges and technical bottlenecks in the mechanical behavior analysis, charge design and manufacturing of composite solid propellants. Among them, the problems such as insufficient experimental observation, lack of theoretical model, limited numerical analysis and difficult verification of results restrict the development of composite solid propellants in future‐oriented engineering applications to a certain extent. The data‐driven computational mechanics method can directly establish complex relationships between variables from high‐dimensional and high‐throughput data, which can capture trends that are difficult to be found by traditional mechanics research methods, and has inherent advantages in the analysis, prediction and optimization of complex systems. This paper mainly reviews and evaluates the research of neural network based modeling, model‐free data‐driven calculation and data‐driven multi‐scale calculation, which provides the correct direction for the subsequent research of multi‐scale mechanical behavior of composite solid propellants based on data‐driven.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on the effect of ageing on the ballistic properties of solid gun and rocket propellants 老化对固体枪炮和火箭推进剂弹道性能影响的综述

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-02-20 DOI: 10.1002/prep.202300164

Ruth Pettifer, Dave Tod

引用次数: 0

The experimental and theoretical study on the spatial-temporal distribution of electromagnetic radiation from JO-8 explosions. 关于 JO-8 爆炸电磁辐射时空分布的实验和理论研究。

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-02-08 DOI: 10.1002/prep.202300242

Pengzhao Xu, Ning Zhao, Yukun Chang, Shaokang Cui, Guangsong Ma, Kunlin Shi, Bao Zhang

{"title":"The experimental and theoretical study on the spatial-temporal distribution of electromagnetic radiation from JO-8 explosions.","authors":"Pengzhao Xu, Ning Zhao, Yukun Chang, Shaokang Cui, Guangsong Ma, Kunlin Shi, Bao Zhang","doi":"10.1002/prep.202300242","DOIUrl":"https://doi.org/10.1002/prep.202300242","url":null,"abstract":"The detonating fuse in the multistage warhead will be subjected to strong electromagnetic interference, derived from electromagnetic radiation generated by explosion of the shaped charge warhead, which may cause premature detonation or misfire. In order to explore the possible electromagnetic environment surrounded the detonating fuse, the spatial-temporal distribution of electromagnetic radiation after the explosion of JO-8 explosive was investigated in this paper. The electromagnetic radiation signal was collected and its frequency coverage was analyzed in the far-field area by the field blast test. Moreover, based on electromagnetic theory, a theoretical model of electromagnetic radiation generated by the explosion of JO-8 explosive was established, and the spatial-temporal distribution of the electric field intensity was illustrated in detail for several typical positions after the explosion. The better agreement between experimental and theoretical results indicates that the proposed theoretical model and computational method are reasonable. On this basis, the distributions of electric field intensity for different positions and various explosive weights were predicted respectively by using distance and explosive weight as variables. This study is expected to provide a reference for the research on the electromagnetic radiation for explosive explosion and anti-explosive electromagnetic interference.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0