International Journal of Impact Engineering最新文献

Configuration–hybrid ratio coupling mechanisms for penetration resistant lightweight TPMS panels 抗侵彻轻型TPMS面板的配置-混合比率耦合机制

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-07-01 Epub Date: 2026-01-28 DOI: 10.1016/j.ijimpeng.2026.105672

Tianyu Gao , Junhao Ding , Kai Liu , Tianxiao Niu , Xu Song , Zhonggang Wang

{"title":"Configuration–hybrid ratio coupling mechanisms for penetration resistant lightweight TPMS panels","authors":"Tianyu Gao , Junhao Ding , Kai Liu , Tianxiao Niu , Xu Song , Zhonggang Wang","doi":"10.1016/j.ijimpeng.2026.105672","DOIUrl":"10.1016/j.ijimpeng.2026.105672","url":null,"abstract":"<div><div>Advances in high-precision additive manufacturing enable the fabrication of architected lattice materials with microscale cellular architectures, establishing a viable route toward integrated porous panels for passive protection. Strengthening localized impact resistance through architected designs carries substantial implications for advanced engineering applications. In this study, hybrid triply periodic minimal surface (TPMS) panels are presented, which integrate category diversity with heterogeneous spatial organization, thereby realizing a synergistic improvement of lightweight efficiency and enhanced impact tolerance. Bio-inspired strategic placement of high-absorption topologies near the proximal end broadened early stress diffusion, stabilized collapse pathways, and enhanced absorption efficiency. A configuration-hybrid ratio coupling mechanism is identified, demonstrating that hybrid TPMS panels with identical mass can outperform their homogeneous counterparts-most notably, a D-P hybrid configuration achieves up to 29.8% higher energy absorption. These findings are experimentally validated using panels comprising over 3000-unit cells fabricated by high-resolution laser powder bed fusion (LPBF) and tested under hemispherical drop-weight impact to capture dynamic deformation responses. Finite element simulations reveal crushing, shear, and tensile fracture as dominant failure modes under localized impact. The continuous hybrid architecture offers improved penetration resistance and stable collapse behavior, providing valuable design guideline for advanced lightweight, impact-resistant metamaterials.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"213 ","pages":"Article 105672"},"PeriodicalIF":5.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 prediction for energy absorption properties of 3D lattice structures under dynamic loading condition 动载条件下三维点阵结构吸能特性的理论预测

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-07-01 Epub Date: 2026-01-27 DOI: 10.1016/j.ijimpeng.2026.105667

Ning Wang , Hanfeng Yin , Yifan Zhao , Guilin Wen , Jie Liu

{"title":"Theoretical prediction for energy absorption properties of 3D lattice structures under dynamic loading condition","authors":"Ning Wang , Hanfeng Yin , Yifan Zhao , Guilin Wen , Jie Liu","doi":"10.1016/j.ijimpeng.2026.105667","DOIUrl":"10.1016/j.ijimpeng.2026.105667","url":null,"abstract":"<div><div>Efficient energy absorption is a critical requirement in modern engineering applications. Triply periodic minimal surface (TPMS) structures, owing to their excellent energy-absorbing capabilities and lightweight characteristics, exhibit broad application prospects in aerospace, automotive engineering, and defense fields. Exploring the dynamic energy absorption characteristics and applying it to engineering protection field have become a current research hotspot. However, existing study addressing the dynamic energy absorption of TPMS structure mainly focuses on numerical simulation and experimental methods, and there are few theoretical methods for predicting the dynamic energy absorption performance. Therefore, building upon the folding element theory as well as the momentum theorem, theoretical model of four TPMS structures is established to predict the energy absorption under dynamic loading condition. The validity of the theoretical prediction is verified through numerical simulation as well as experimental methods. It is obtained from the results that theoretical prediction for the mean crushing stress under dynamic loading condition has high accuracy and effectively reveals the impact of structural parameters on dynamic energy absorption performance. This study provides a reliable theoretical model to predict the energy-absorbing behavior of four TPMS structures under dynamic loading condition, offering a valuable reference for the application in engineering.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"213 ","pages":"Article 105667"},"PeriodicalIF":5.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dynamic compression behavior of columnar freshwater ice at intermediate strain rates 中等应变速率下柱状淡水冰的动态压缩特性

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-17 DOI: 10.1016/j.ijimpeng.2026.105654

Y.D. Sui , Z.P. Gu , J.P. Ren , J.Z. Yue , C.G. Huang , X.Q. Wu

{"title":"Dynamic compression behavior of columnar freshwater ice at intermediate strain rates","authors":"Y.D. Sui , Z.P. Gu , J.P. Ren , J.Z. Yue , C.G. Huang , X.Q. Wu","doi":"10.1016/j.ijimpeng.2026.105654","DOIUrl":"10.1016/j.ijimpeng.2026.105654","url":null,"abstract":"<div><div>Understanding the dynamic response of ice is essential for modeling ice‑related engineering problems. In this study, the dynamic compressive behavior of columnar freshwater ice at temperatures from -10 to -50°C and strain rates of 6 to 250 s<sup>-1</sup> is obtained using a cryogenic split Hopkinson pressure bar. The effects of crystal orientation, strain rate, and temperature on the mechanical response of the ice are investigated. The results show that the strengths of ice at 0° and 90° crystal orientation increase with increasing strain rate and decreasing temperature. In addition, the columnar ice exhibits pronounced anisotropy. The peak strength at 0° orientation is significantly higher than at 90° orientation, with a near-constant strength ratio of 1.45. The failure mode of the ice is also orientation‑controlled, with axial splitting at 0°orientation and oblique shear banding at 90° orientation. A unified strength scaling law is developed, incorporating ice texture, strain rate, and temperature, and it successfully captures dynamic strength data from both the literature and the present study. This work advances the understanding of the dynamic behavior of ice and provides a unified constitutive model for analyzing ice-structure interactions.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105654"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Investigation of hypervelocity impact on ceramic fiber insulation tiles: an integrated approach of numerical simulation and experimental validation 超高速冲击对陶瓷纤维保温砖的影响研究：数值模拟与实验验证相结合的方法

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-01 DOI: 10.1016/j.ijimpeng.2025.105633

Yiming Wang , Yesheng Zhong , Kaili Yin, Guoquan Luo, Xiaoliang Ma, Liping Shi, Xiaodong He

{"title":"Investigation of hypervelocity impact on ceramic fiber insulation tiles: an integrated approach of numerical simulation and experimental validation","authors":"Yiming Wang , Yesheng Zhong , Kaili Yin, Guoquan Luo, Xiaoliang Ma, Liping Shi, Xiaodong He","doi":"10.1016/j.ijimpeng.2025.105633","DOIUrl":"10.1016/j.ijimpeng.2025.105633","url":null,"abstract":"<div><div>The thermal protection system is essential for hypersonic spacecraft safety during take-off, orbital operations, and re-entry. Ceramic fiber insulation tile (CFIT), as its key heat-resistant material, is a porous, brittle, 3D network material with complex mechanical behavior. It is typically coated with a high-emissivity coating during use and must withstand hypervelocity impact (HVI) from space debris on orbit. In this study, numerical simulation and experiment are used to study the mechanical response of CFIT under HVI. First, numerical simulation of CFIT’s HVI response was conducted using ABAQUS/Explicit, combined with the smoothed particle hydrodynamics (SPH) method and incorporating a user-defined material model (VUMAT). The validity of the model was verified by comparing the fragment cloud distribution and the maximum penetration depth obtained from numerical simulation and experiment. Second, the effects of different projectile shapes (spherical and cubic) and sizes on the impact response of CFIT were investigated, with systematic analysis of CFIT’s velocity/mass loss, maximum penetration depth, and stress distribution. Furthermore, based on the established model, the material thickness required to effectively resist space debris HVI was determined. This was achieved by analyzing the velocity dissipation and energy absorption characteristics of spherical projectile under different impact velocities and thickness conditions. Finally, the impact failure mechanism of coated CFIT was studied and the optimal coating thickness was specified. Overall, this study can provide theoretical guidance for the thickness design of CFIT and its surface coating to resist HVI in spacecraft.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105633"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 simplified decoupled methodology for predicting the blast response of foam-cladded structures 预测泡沫包层结构爆炸响应的简化解耦方法

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI: 10.1016/j.ijimpeng.2026.105666

Ola Wattad, Hezi Y. Grisaro

{"title":"A simplified decoupled methodology for predicting the blast response of foam-cladded structures","authors":"Ola Wattad, Hezi Y. Grisaro","doi":"10.1016/j.ijimpeng.2026.105666","DOIUrl":"10.1016/j.ijimpeng.2026.105666","url":null,"abstract":"<div><div>Metallic foams are increasingly used as sacrificial cladding for blast protection due to their exceptional energy absorption and low density. Fully coupled analyses based on shock front theory to model the coupled foam compaction and structural response offer accurate predictions of the displacement-time histories, but require significant computational resources and specialized numerical algorithms. This study proposes a simplified, decoupled analytical approach that separates foam compaction analysis from structural response, greatly reducing computational complexity. The method incorporates established analytical solutions by including initial velocity conditions, and effectively handles foams with spatially varying densities through discretization into uniform-density layers, where each layer is solved analytically. Moreover, dynamically adjusting the mass parameter during foam compaction significantly improves the accuracy. A comprehensive comparison with fully coupled numerical simulations validates the reliability of the proposed methodology, demonstrating minimal deviations suitable for practical engineering applications. This approach facilitates rapid protective design iterations and structural optimization, making it a valuable tool for engineers analyzing diverse foam configurations under various blast scenarios.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105666"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

In situ quantitative monitoring of hypervelocity impact combining resistive film and two-layer acoustic emission sensing methods 结合电阻膜与双层声发射传感技术的超高速冲击现场定量监测

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.ijimpeng.2026.105669

Yanming Wang , Shun Lu , Min Gao , Qiang Wu , Pinliang Zhang , Qian Yu , Jiaxing Tian , Zhongqing Su , Menglong Liu

{"title":"In situ quantitative monitoring of hypervelocity impact combining resistive film and two-layer acoustic emission sensing methods","authors":"Yanming Wang , Shun Lu , Min Gao , Qiang Wu , Pinliang Zhang , Qian Yu , Jiaxing Tian , Zhongqing Su , Menglong Liu","doi":"10.1016/j.ijimpeng.2026.105669","DOIUrl":"10.1016/j.ijimpeng.2026.105669","url":null,"abstract":"<div><div>In-orbit spacecraft face serious threats from hypervelocity impact (HVI) caused by the space debris and meteoroids. In this paper, a two-layer sensing system is proposed to achieve <em>in situ</em> quantitative monitoring of HVI induced by the space debris. The two-layer sensing system consists of a PI-Cu membrane and an aluminum plate, in which the resistive strain sensing and two-layer acoustic emission (AE) sensing methods are integrated. Firstly, a time delay-multiplication (TDM) probability imaging algorithm with the compensation of acoustic velocity anisotropy is proposed, enabling the localization of projectile impacts on the PI-Cu membrane and aluminum plate based on the acoustic emission sensing method. Secondly, an evaluation method for impact angle and velocity is developed using the localization results from the two-layer target structure and the time of arrival data. Finally, by the numerical simulations combining smoothed particle hydrodynamics and finite element method (SPH-FEM), the relationship between projectile size and the major axis of the impact perforation is formulated through curve fitting. Using the number of broken resistive wires as input, a method for assessing projectile size is proposed. Experimental validation shows the proposed monitoring system, which combines the resistive sensing and two-layer AE sensing, could contribute to the <em>in situ</em> quantitative monitoring of the space debris distribution and spacecraft damage caused by HVI.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105669"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Capturing early fragment dynamics in dense explosion clouds 捕捉密集爆炸云中的早期碎片动态

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-19 DOI: 10.1016/j.ijimpeng.2026.105660

Arpit Joglekar , Vishal Jagadale , Devashish Chorey , Viwek Mahto , Paras Nath Verma , Kusumkant Dhote , Devendra Deshmukh

{"title":"Capturing early fragment dynamics in dense explosion clouds","authors":"Arpit Joglekar , Vishal Jagadale , Devashish Chorey , Viwek Mahto , Paras Nath Verma , Kusumkant Dhote , Devendra Deshmukh","doi":"10.1016/j.ijimpeng.2026.105660","DOIUrl":"10.1016/j.ijimpeng.2026.105660","url":null,"abstract":"<div><div>Accurate measurement of initial fragment velocities is critical for characterizing dispersion and shocked fragment interactions inside the explosion cloud. Conventional techniques yield only time-averaged data, missing early-stage dynamics inside harsh explosive environments. This study employs Digital Inline Holography (DIH) with sub-µs exposure to track early-stage dynamics of preformed fragments in single- and three-fragment configurations using two electric detonators, Det-1 and Det-2, with different explosive masses. Despite its higher explosive mass, Det-1 produced lower fragment velocities than Det-2 due to higher energy absorption through deformation and fracture. In the three-fragment inline setup, the outermost fragment consistently attained the highest velocity, driven by shock transmission. The fragments showed significant deceleration due to increased density inside the cloud in both detonator configurations. Energy absorbed in fragment deformation was analyzed using SEM and XRD. Results showed that fragments from Det-1 absorbed more energy, resulting in lower initial velocities. A velocity decay model, incorporating effective density and drag, supported experimental trends. Overall, this study provides continuous time-resolved fragment velocity characterization in harsh explosive environments, offering critical insights into shock–fragment interactions, energy partitioning, and preformed fragmentation behaviour.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105660"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Residual impact resistance of fire-exposed RC slabs: High-fidelity modeling, mechanisms, and prediction 暴露于火中的RC板的残余抗冲击性：高保真模型、机制和预测

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-07 DOI: 10.1016/j.ijimpeng.2026.105640

Puchu Xie , Li Chen , Bin Feng , Chengjun Yue , Linfeng Xu , Boyu Chen

{"title":"Residual impact resistance of fire-exposed RC slabs: High-fidelity modeling, mechanisms, and prediction","authors":"Puchu Xie , Li Chen , Bin Feng , Chengjun Yue , Linfeng Xu , Boyu Chen","doi":"10.1016/j.ijimpeng.2026.105640","DOIUrl":"10.1016/j.ijimpeng.2026.105640","url":null,"abstract":"<div><div>The residual impact resistance of reinforced concrete (RC) slabs following fire exposure is a critical concern for structural safety, yet remains poorly understood due to the complexity of coupled thermo-mechanical phenomena. This paper establishes a high-fidelity computational framework to systematically investigate this issue by integrating the KC-HT constitutive model with a Truss-Enhanced Adaptive FEM-MPM (TEAFEMPM) platform. Following validation against experimental data, an extensive parametric study reveals a non-monotonic, “U-shaped” relationship between the slab’s dynamic resistance and impact velocity. This trend originates from the interplay between physical failure mechanisms and the resistance metric: the initial drop in resistance is driven by a sharp increase in penetration depth as failure transitions from top-rebar containment to bottom-rebar arrest, while the subsequent rise is attributed to material strain-rate hardening within the perforation regime. Furthermore, thermal pre-damage systematically lowers this U-shaped curve. Based on a validated physics-informed decoupling hypothesis—which confirms that thermal degradation is largely independent of impact velocity—these insights are synthesized into a unified predictive model. By employing a general functional form with coefficients calibrated for the studied configuration, the model accurately quantifies residual impact resistance (<span><math><msup><mrow><mi>R</mi></mrow><mn>2</mn></msup></math></span> = 0.897). This study elucidates the governing failure mechanisms and provides an efficient tool for the vulnerability assessment of thermally damaged structures.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105640"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dynamic yield strength of Ta under shock-ramp compression measured by a machine-learning enhanced self-consistent Lagrangian analysis method 用机器学习增强自洽拉格朗日分析方法测量冲击斜坡压缩下Ta的动态屈服强度

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.ijimpeng.2026.105668

Yiheng Zhou , Dun Wu , Yuanchao Gan , Xuemei Li , Xiaolong Nan , Guoqiang Luo , Yuying Yu , Jianbo Hu

{"title":"Dynamic yield strength of Ta under shock-ramp compression measured by a machine-learning enhanced self-consistent Lagrangian analysis method","authors":"Yiheng Zhou , Dun Wu , Yuanchao Gan , Xuemei Li , Xiaolong Nan , Guoqiang Luo , Yuying Yu , Jianbo Hu","doi":"10.1016/j.ijimpeng.2026.105668","DOIUrl":"10.1016/j.ijimpeng.2026.105668","url":null,"abstract":"<div><div>The dynamic yield strength of materials under extreme loading conditions is critical for applications in inertial confinement fusion, space debris protection, and high-strain-rate deformation processes. This study systematically investigates the dynamic yield behavior of tantalum (Ta) under shock-ramp compression using graded density impactors (GDIs), covering pressures from 36 GPa to 120 GPa and strain rates from 2.09 × 10<sup>5</sup> /s to 1.28 × 10<sup>6</sup> /s. A machine learning-enhanced transfer function (MLTF) method was developed to eliminate window-induced artifacts in experimental measurements, enabling accurate recovery of <em>in-situ</em> velocity profiles. By establishing a mapping between the input stress profile and the interface velocity profile, the MLTF method overcomes the long-standing difficulty of achieving consistency between experimental and simulated curves inherent in conventional TF approaches. Strength data were extracted via a self-consistent Lagrangian analysis, yielding values from 1.02 GPa to 2.64 GPa. These results were used to calibrate a dislocation-based strength (DBS) model, which incorporates the effects of pressure, temperature, strain rate, and dislocation mechanisms. Comparative analysis with multi-loading-path data reveals significant path-dependent strength differences: ramp compression exhibits higher strength than shock-ramp and shock compression, primarily due to temperature softening effects. The MLTF method demonstrates robustness for complex loading paths, providing a foundation for advanced constitutive modeling under extreme conditions. This work advances the understanding of path-dependent material response and offers a scalable framework for strength characterization under diverse thermodynamic paths.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105668"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Extreme near-field reflected blast loads of cylindrical charges 极端近场反射爆炸载荷的圆柱形装药

IF 5.1 2区工程技术

International Journal of Impact Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-29 DOI: 10.1016/j.ijimpeng.2026.105673

Ruilong Ma , Xinjie Wang , Fenglei Huang

{"title":"Extreme near-field reflected blast loads of cylindrical charges","authors":"Ruilong Ma , Xinjie Wang , Fenglei Huang","doi":"10.1016/j.ijimpeng.2026.105673","DOIUrl":"10.1016/j.ijimpeng.2026.105673","url":null,"abstract":"<div><div>Accurate prediction of near-field reflected blast loads is critical for structural safety assessment and protective design. However, the spatiotemporal characterization of extreme near-field blast loads remains insufficient. This study established a numerical model to investigate blast reflections from cylindrical charges, accounting for the coupled effects of detonation products and shock waves. The results reveal that the reflected blast wave follows a self-similar evolution, with the interface of detonation products transitioning from a smooth state to a complex morphology of random microjets as the expansion radius increases. With increasing scaled distance, the high-pressure region of cylindrical charges diminishes significantly due to radial rarefaction waves. At larger aspect ratios, the dynamic pressure of detonation products in the regular reflection region exceeds that of spherical charges, while the opposite trend occurs in the Mach reflection region. Furthermore, the reflected peak loads of cylindrical charges decay nonlinearly and monotonically with scaled distance, whereas the peak overpressure attenuates non-monotonically with incident angle due to Mach reflection effects. For higher aspect ratios, the overpressure amplitude in the regular reflection region increases continuously, with peak overpressure contours converging axially. Additionally, as the load amplitude decreases, the contribution area ratios of reflected peak loads between cylindrical and spherical charges gradually diminish. This study presents a quantitative investigation of extreme near-field blast load characteristics from cylindrical charges, contributing insights for predictive model development.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"212 ","pages":"Article 105673"},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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