Article
Engineering, Civil
Xiang Zhu, Pengju Zhao, Yuan Tian, Rui Wang
Summary: This study investigated the response of different types of columns to impact forces under various axial load levels. The results showed that composite columns exhibited ductile behavior, with S-DS columns demonstrating the best impact resistance. The influence of axial load levels on impact resistance and response characteristics was also discussed.
THIN-WALLED STRUCTURES
(2021)
Article
Chemistry, Physical
Tomasz Garbowski, Anna Knitter-Piatkowska, Piotr Winiarski
Summary: The edge crush test is commonly used in the corrugated packaging industry to measure the edge crush resistance of a sample. It is widely used for specifying the board by producers and describing the load capacity of the packaging. The ECT value can be estimated from analytical and numerical models based on the paper's parameters, and virtual analysis of new boards can be conducted before manufacturing.
Article
Chemistry, Multidisciplinary
Samer Fakhri Abdulqadir, Faris Tarlochan
Summary: This study validates the application of carbon fiber composite materials for energy absorption in vehicle crashes, demonstrating that new designs and composite materials can reduce weight without compromising safety. Experimental data was used to validate a computational model.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Civil
Jiayue Zhai, Dingguo Zhang, Meng Li, Chengbo Cui, Jianguo Cai
Summary: This study investigated the energy-absorption characteristics of origami honeycombs in the out-of-plane crushing process. The results showed that origami honeycombs have a more stable folding process and predictable deformation mode. The theoretical model deduced using the super-folding method was found to be accurate, with an error between the theoretical and simulation results ranging from -8.55% to 6.50%.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Yujie Yu, Peifeng Tian, Mengke Man, Zhihua Chen, Lizhong Jiang, Biao Wei
Summary: This study experimentally investigated the fire resistance of critical columns, load-bearing walls, and non-load-bearing walls in a modular steel building, evaluating different fire-proof measures and determining suitable thermal properties for gypsum boards and mineral wool insulation. Failure modeling methods for gypsum boards and mineral wool insulation were defined, and FE models were established to predict temperature developments across wall and grouped column specimens effectively.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Jingjie Yang, Jiepeng Liu, Shang Wang, Weiyong Wang
Summary: The fire-resistance behavior of CTSRC medium-long columns is influenced by various factors, such as load ratio and eccentric loading. A simplified design method was proposed for predicting fire resistance under ISO-834 standard fire, showing good agreement with numerical analyses and test results within a specific application range.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
Chen Chen, Hai Fang, Lu Zhu, Juan Han, Xiaolong Li, Zhen Qian, Xinchen Zhang
Summary: This study investigates the low-velocity impact properties of foam-filled composite lattice sandwich beams. The impact resistance of the sandwich beam is affected by factors such as lattice-web spacing, lattice-web thickness, foam density, foam thickness, impact height, and impact position. Experimental and numerical analyses reveal the failure modes and the influence of various parameters on the impact performance of the sandwich beams.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Yingtao Wang, Shaohua Hu
Summary: This study experiments on the impact behavior of elliptical concrete-filled steel tubular (CFT) columns subjected to lateral loading. The experimental results show that the specimen can withstand global displacements without buckling of the steel tubes. The impact velocity has significant influences on the impact load-time histories and energy absorption, while impact times have little influence on the impact force and displacement at the same impact velocity. Circular CFT columns have the highest ductility and impact-energy-absorption capacity.
Article
Engineering, Mechanical
Yong Zhang, Jin Wang, Jiming Lin, Feng Zhang, Xiaolei Yan
Summary: This paper investigates the mechanical responses of natural wood and wood-filled composite structures under axial crushing load and finds that grain orientations of the wood and the external wall material significantly influence the collapse mode and crushing force. Additionally, it compares the performance of wood-filled aluminum and wood-filled CFRP composite columns, highlighting the higher crushing force level and progressive collapse mode of wood-filled aluminum columns. Insights on designing novel energy absorbers with high crashworthiness capacity using wood fiber materials are provided.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Construction & Building Technology
Yuliang Chen, Shaosong Zhang, Zongping Chen
Summary: This study discusses the seismic behavior of steel angle truss reinforced concrete (SARC) columns under compression-bending-shear-torsion combined action. Ten SARC columns were designed and tested, and the influence of various parameters on the seismic performance was investigated. The failure modes, hysteretic curves, and important performance parameters of the specimens were obtained. The study also proposed a calculation method for torsional bearing capacity of SARC columns under compression-bending-shear-torsion combined action.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Marine
F. Djamaluddin, F. Mat
Summary: This research analyzed the energy absorption characteristics and crashworthiness design of ship fender structures with varying geometric dimensions. The study focused on foam-filled fenders and used non-linear finite element analysis to determine specific energy absorption and maximum crushing force efficiency, aiming to optimize crashworthiness. The optimization results showed that foam-filled double fender (FDF) had the best performance, recommending a change in traditional fender design.
Article
Engineering, Civil
Aljosa Filipovic, Jelena Dobric, Nancy Baddoo, Primoz Moze
Summary: This study aims to provide experimental data on the buckling and collapse behavior of hot-rolled stainless steel angle columns to aid in developing design guidelines absent in European standard. The experiments included material tests, geometric imperfection measurements, residual stress measurements, and compression tests, finding that the strength predictions in design specifications were conservative due to lower initial geometric imperfections in test columns compared to fabrication tolerances in codified design.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Huichao Chen, Yong Zhang, Jiming Lin, Feng Zhang, Yaxuan Wang, Xiaolei Yan
Summary: This study proposed a design method for sandwich columns with corrugated sinusoidal cores, compared the energy absorption of different types of corrugated sandwich columns, obtained the optimal design parameters through numerical optimization, and experimental results showed an increase in energy absorption of about 10% compared to the initial design.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Mohammed M. Kadhum, Ali M. Hashim, Shahad S. Khamees, Amir H. Akhaveissy, Abduljabar H. Ali
Summary: This article presents an experimental study on the efficiency of slurry infiltrated fiber concrete (SIFCON) columns after fire exposure. The results show that the compressive strength of SIFCON columns decreases after fire exposure, while the displacement ductility and energy dissipation ability are not significantly affected. Additionally, higher fire temperatures lead to a greater reduction in stiffness.
STRUCTURAL CONCRETE
(2022)
Article
Construction & Building Technology
Yuanlong Yang, Guojun Wang, Weiqi Yang, Xuan Wei, Yohchia Frank Chen
Summary: Six L-shaped concrete-filled steel tubular (LCFST) stubs were designed and tested under axial compression and fire conditions. The study investigated the temperature distribution, deformation, fire resistance, and failure modes of LCFST columns. The results showed that fire resistance decreased with increasing axial compression ratio and increased linearly with fire protection layer thickness. The tension-bar stiffened column exhibited slightly higher fire resistance. Finite element analysis confirmed the test results. LCFT columns had slightly higher fire resistance than the square CFST column specified in the design code. Parameter analysis revealed that slenderness ratio, column limb thickness, eccentricity ratio, and fire protection layer thickness all influenced fire resistance. A reasonably thick fire protection layer could achieve a first-level fire-resistance rating for LCFST columns. Simplified formulas for fire resistance and fire protection layer were proposed, reducing the required thickness by 50%.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Mechanical
Zhang Xiong, Zhang Hui
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2018)
Article
Engineering, Civil
Xiong Zhang, Hui Zhang, Kehua Leng
THIN-WALLED STRUCTURES
(2018)
Article
Mechanics
Zhixin Huang, Xiong Zhang, Chongyi Yang
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Mechanical
Xiong Zhang, Hui Zhang, Chongyi Yang, Kehua Leng
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2019)
Article
Engineering, Civil
Zhixin Huang, Xiong Zhang
THIN-WALLED STRUCTURES
(2019)
Article
Engineering, Mechanical
Baiwei Zhang, Xiong Zhang, Shilan Wu, Hui Zhang
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Mechanics
Zhixin Huang, Xiong Zhang
COMPOSITE STRUCTURES
(2020)
Article
Engineering, Multidisciplinary
Zhixin Huang, Xiong Zhang, Chongyi Yang
COMPOSITES PART B-ENGINEERING
(2020)
Article
Engineering, Civil
Hui Zhang, Xiong Zhang
THIN-WALLED STRUCTURES
(2020)
Article
Engineering, Civil
Zhixin Huang, Xiong Zhang, Xinrong Fu
THIN-WALLED STRUCTURES
(2020)
Article
Mechanics
Xinrong Fu, Xiong Zhang, Zhixin Huang
Summary: This study investigates the energy absorption characteristics of Nylon and Al/Nylon hybrid tubes manufactured by 3D printing, finding that Nylon tubes alone are not suitable for energy absorption, while hybrid tubes can avoid adverse effects and show high efficiency. Theoretical expressions are derived to predict mean crushing forces of the hybrid tubes, with predictions matching well with experimental results.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Zhixin Huang, Ying Li, Xiong Zhang, Wei Chen, Daining Fang
Summary: This study compares the bending collapse characteristics and energy dissipation mechanisms of aluminum/CFRP hybrid beams, finding that the energy absorption efficiency of the hybrid beams can be significantly improved under specific conditions.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Mechanical
Xiong Zhang, Xinrong Fu, Qingchun Yu
Summary: Thin-walled beams are often subjected to transverse or oblique loads in real crash accidents, and their energy absorption capacity under transverse loading is much lower than under axial loading. Arched structures have the potential to convert transverse forces into axial forces, improving the energy absorption and crashworthiness performance of structures significantly.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Engineering, Civil
Xinrong Fu, Xiong Zhang, Qingchun Yu
Summary: Arched thin-walled structures have the potential to significantly increase the bending resistance of beams under transverse loading by converting transverse forces into axial forces. This study investigates the crashworthiness of an optimized arched structure with circular section (OASCS) and finds that OASCS specimens exhibit nearly 5 times the energy absorption and specific energy absorption (SEA) of corresponding straight tubes. The forming process of OASCS has a 20% increase in SEA. The response of OASCS is found to be insensitive to span, and crashworthiness optimization and partial multi-cell enhancement further improve the SEA by about 40% and 60% respectively.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Xinrong Fu, Xiong Zhang
Summary: This study investigates the bending behavior of thin-walled arched beams and their energy absorption properties. Experimental tests and numerical simulations show that arched beams have better energy absorption performance compared to straight beams, and beams with square sections generally have better energy absorption efficiency than those with circular sections.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Mechanical
A. P. Simonov, I. V. Sergeichev
Summary: The direct impact method provides a higher sample deformation rate and reliable results for materials with low yield strength and hardening rate. This study proposes an alternative procedure for calculating the strain rate in order to improve accuracy of the direct impact method for a wide range of metals and alloys. The proposed method has been validated through finite element analysis and direct impact tests, and it qualitatively changes the shape of the stress-strain curve by adding an unloading area.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Qiang Wei, Zifeng Li
Summary: This study investigates the dynamic bifurcation of a column when it impacts a rigid plane vertically, which is different from the classical Eulerian static buckling. The findings show that either the dimensionless critical buckling time or the dimensionless critical buckling velocity can be used to determine whether buckling has occurred. Different dimensionless initial defects in the column result in different dimensionless displacement responses, and the nonlinear effect influences the analysis results.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
M. C. Price, M. J. Cole, K. H. Harriss, L. S. Alesbrook, M. J. Burchell, P. J. Wozniakiewicz
Summary: This article introduces a new gas gun developed at the Centre for Astrophysics and Planetary Science, University of Kent, which can produce vertical impacts at speeds up to 2 km/s. The gun design, assembly, operation, and ancillary components are described in detail. The experimental results demonstrate that the gun performs as expected.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Fanny Gant, Gabriel Seisson, Patrice Longere, Skander El Mai, Jean-Luc Zinszner
Summary: The article investigates the high strain rate response of metals and alloys under radial expansion and compares different materials. The results show that different materials exhibit different responses in terms of deformation and fracture.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
M. D. Fitzgerald, J. D. Pecover, N. Petrinic, D. E. Eakins
Summary: This study investigates the mechanism for the destruction of thick flyers accelerated using electric guns and proposes strategies for mitigating their break-up based on experimental results and mathematical models. The findings suggest that limiting the maximum pressure within the flyer and extending the current rise time can prevent flyer failure, increasing the efficiency and shock duration of the electric gun.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Guowen Gao, Enling Tang, Guolai Yang, Yafei Han, Mengzhou Chang, Kai Guo, Liping He
Summary: In this study, the dynamic constitutive model of Al/Ep/W material was investigated and verified through experiments and numerical simulations. The proposed model accurately described the mechanical behavior of the material under high strain rates, providing an important reference for evaluating the response characteristics of the new energetic material projectile to lightweight aluminum armor.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Minzu Liang, Meng Zhou, Xiangyu Li, Yuliang Lin, Fangyun Lu
Summary: UHMWPE fiber mesh reinforced polyurea composites improve structural strength and blast resistance performance, and can alter the failure mode. Loose filler is generated as polyurea melts and fragments penetrate. Joint loads are classified into three categories based on their connection and duration.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Ashutosh Jha, Guglielmo Cimolai, Iman Dayyani
Summary: The present article introduces the Zero Poisson's Ratio Fish Cells metamaterial and investigates the effects of Poisson's ratio on the crashworthiness of different lattice structures. Numerical results demonstrate that the Zero Poisson's Ratio model possesses greater stability and structural integrity with minimal edge deformations.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Hongbo Zhang, Dayong Hu, Xubin Ye, Xin Chen, Yuhuai He
Summary: This study investigated the impact of spherical foreign objects on simulated blade edges through experimental and theoretical analysis. The experimental results showed that increasing impact energy resulted in larger damage sizes, and three distinct types of deformations were observed in FOD. Accurate FOD prediction models were developed using linear and power formulas. The theoretical analysis using a spring-mass system based on Winkler's elastic-plastic foundation theory yielded results in good agreement with experimental measurements, providing a reference for fatigue life assessment of aeroengine blades.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
L. M. Reitter, Y. A. Malik, A. B. Jahn, I. V. Roisman, J. Hussong
Summary: This study characterizes the dynamic strength of wet granular ice layers through impact tests. The results reveal strong connections between ice particles in ice layers generated by ice crystal accretion. Comparable strength values can be obtained by reinforcing ice particle connections in ice layers prepared in the laboratory.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Kyle Mao, Genevieve Toussaint, Alexandra Komrakova, James D. Hogan
Summary: In this study, the Generalized Incremental Stress State dependent damage MOdel (GISSMO) is used to simulate the high-velocity impact failure of Armox 500T steel. The GISSMO is calibrated and validated using experimental data from the literature, and is then applied to investigate the impact failure behaviors of bi-layered steel systems. The results provide new capabilities and insights for the design of armor structures and evaluation of impact failure behaviors in Armox 500T/RHA bi-layered systems.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Asim Onder
Summary: This paper investigates the performance of bumper plates with wavy surfaces under hypervelocity impact and finds that they are more effective in decreasing the impact energy compared to flat plates. The study also reveals the distinctive debris cloud generation that has never been reported before.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Zhi-Yong Yin, Xiao-wei Chen
Summary: This study numerically reveals three typical fracture modes of explosively-driven metal shells and investigates the influencing factors of different fracture modes through experimental data and dimensional analysis.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Jiri Pachman, David J. Chapman, Marek Foglar, Martin Kunzel, William G. Proud
Summary: Through the study of different types of concrete, it was found that despite their compositional complexity, range of compressive strengths, and reinforcement methods, the average Hugoniot data were remarkably similar between different concrete types.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)
Article
Engineering, Mechanical
Konstantin Kappe, Klaus Hoschke, Werner Riedel, Stefan Hiermaier
Summary: This paper presents a multi-objective optimization procedure for effectively designing gradient lattice structures under dynamic loading. The aim is to maximize energy absorption characteristics and achieve a lightweight design. Through considering design variables such as the relative density and density gradient, the peak crushing force reduction and maximized specific energy absorption are simultaneously optimized. A simplified beam-based finite element model is used to efficiently model and simulate the lattice structures. An artificial neural network is trained to predict energy absorbing characteristics and find optimal lattice structure configurations. The network is trained using a multi response adaptive sampling algorithm, allowing parallel simulation with automatically generated finite element models. A multi-objective genetic algorithm is then used to find optimal combinations of design parameters for lattice structures under different impact velocities and cell topologies.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2024)