Article
Engineering, Mechanical
V. R. Feldgun, D. Z. Yankelevsky, Y. S. Karinski
Summary: This paper investigates projectile perforation through a concrete slab and proposes a simple and fast approach for assessing perforation parameters. A new parameter called pseudo-residual velocity (VP) is defined and theoretically calculated. The approach reduces perforation parameter determination to a series of pseudo-perforation problems and is compared to test results, demonstrating good predictions.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Engineering, Mechanical
Paolo Foraboschi
Summary: This paper focuses on reinforced concrete beams that may experience accidental falls of heavy masses. It provides an analytical formulation to predict the combinations that trigger the collapse of a RC beam and discusses the two possible failure modes and their sensitivity to various parameters.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Andac Lulec, Vahid Sadeghian, Frank J. Vecchio
Summary: This study reviews and compares the commonly used models for computing the local effects of hard missile impacts, finding that most existing models are unable to accurately predict perforation velocity. A new semi-analytical model is proposed to address this issue, which is able to consider the influence of in-plane and shear reinforcement. Performance of the proposed model is evaluated against experimental results and other existing models.
CANADIAN JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Engineering, Civil
Hamood Alwashali, Masaki Maeda, Yoshihiro Ogata, Naoyuki Aizawa, Kazuya Tsurugai
Summary: This study investigates the influence of pre-damage levels on the residual seismic capacity of reinforced concrete walls, finding that there was no significant deterioration in ultimate strength and maximum deformation capacity due to slight to severe previous damage. The research highlights the importance of assessing the performance of damaged buildings after earthquakes to ensure their safety in future seismic events.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Zhongcheng Mu, Yile Hu, Wei Wang, Ji Yuan Yi, Xuebin Cheng, Xiaofeng Wu
Summary: A new punching plug model is proposed in this paper based on the similar features with punching shear in concrete slabs, utilizing the failure criterion of modified Mohr-Coulomb. Semi-empirical equations corresponding to ballistic limit, residual velocity, and punching plug thickness are derived.
STRUCTURAL CONCRETE
(2022)
Article
Chemistry, Multidisciplinary
Bo Pu, Xiaoming Wang, Weibing Li, Jun Feng
Summary: This study investigated the hard projectile perforation of steel plate reinforced concrete walls using numerical and analytical methods. An analytical model was established to describe the five stages of penetration resistance, and the effect of front concrete panel and rear steel plate thickness combinations was studied and analyzed. The equivalent concrete slab thickness was derived, which may be helpful in the design of a protective strategy.
APPLIED SCIENCES-BASEL
(2022)
Article
Construction & Building Technology
Jiabin Ye, Yingtao Wang, Jian Cai, Qingjun Chen, An He
Summary: This study investigates the residual lateral capacity of RC columns after experiencing static and horizontal impact action. Static and horizontal impact tests were conducted on a total of sixteen RC columns, with variables including shear-span ratio, impact weight, and velocity. The experimental results, including impact force, deflection, strain, cracking pattern, and failure mode, were discussed. It was found that the inertial effect plays a significant role in the dynamic behavior of the RC columns, as observed through a comparison of the load-deflection curves under static and impact loading. Additionally, a method for evaluating the residual capacity of RC columns after impact loading, based on the widely used Park-Ang damage model for assessing post-seismic performance, was developed and confirmed through experimental results.
Article
Construction & Building Technology
Hao Yang, Xia Yang, Zhenhao Mao
Summary: This study investigates the residual behaviors of post-fire steel-reinforced concrete (SRC) columns through testing. It is demonstrated that the strength of SRC columns significantly decreases after exposure to high temperature, but this loss can be effectively reduced by increasing the steel section ratio. The concrete compressive strength and sectional aspect ratio have little effect on the residual strength. Equations for estimating the ultimate strength of post-fire SRC columns are developed and proven to be accurate.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Mario Jelec, Hrvoje Draganic, Goran Gazic, Sanja Lukic
Summary: Laboratory static bending tests were conducted to determine the residual load-bearing capacities of retrofitted and un-retrofitted RC slabs after blast. Three different retrofit systems were used and their contribution to strength and stiffness was evaluated. The results showed that all retrofit systems enhanced the residual strength and stiffness capacities, with the system consisting of two layers of chopped-strand glass mat providing the highest contribution.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Shilang Xu, Fei Zhou, Qinghua Li, Bokun Chen, Xiao Jiang, Xing Yin, Ping Wu
Summary: This study compares the perforation resistance of thick panels made of reactive powder concrete (RPC) and ultra high toughness cementitious composites (UHTCC), finding that UHTCC has superior resistance to tensile damage while RPC exhibits higher penetration resistance. Additionally, a unified semi-analytical model is proposed to predict the penetration and perforation ballistic parameters of thick concrete panels under projectile impact.
CEMENT & CONCRETE COMPOSITES
(2021)
Review
Materials Science, Multidisciplinary
Mahdi Kioumarsi, Armando Benenato, Barbara Ferracuti, Stefania Imperatore
Summary: This paper reviews experimental tests for residual capacity assessment of corroded prestressed reinforced concrete beams and suggests a degradation law for the flexural strength.
Article
Engineering, Mechanical
Ze-Yi Wang, Quan-Quan Guo, Chuan-Chuan Hou
Summary: This study investigates the ballistic performance of PC slabs under hard missile impact through numerical modeling. It is found that prestress is the main reason for enhancing the ballistic resistance of PC slabs, with the increase in reinforcement ratio due to prestressing bars as a secondary reason, and the confinement effect applied to the concrete being the major reason for the increase in ballistic resistance.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Engineering, Mechanical
Ze-Yi Wang, Quan-Quan Guo, Chuan-Chuan Hou
Summary: This study numerically investigates the ballistic performance of prestressed concrete (PC) slabs using finite element modeling. The research reveals that the prestress is the main reason for enhancing the ballistic resistance of PC slabs, while the increase in reinforcement ratio due to prestressing bars is a secondary reason. The study also proposes a semi-empirical formula for predicting the critical perforation velocity of PC slabs, which provides more accurate predictions compared to existing formulas.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Engineering, Marine
Hua-Peng Chen, Yu Jiang, George Markou
Summary: This paper investigates the impact of rebar corrosion on marine reinforced concrete (RC) structures and proposes new analytical models for predicting the residual bearing capacity of corroded RC columns. The study also analyzes the influence of corrosion damage location, load condition, and in-service environment on structural performance.
Article
Engineering, Marine
Hua-Peng Chen, Yu Jiang, Wen-Bin Li
Summary: This paper proposes a method to investigate the effects of rebar corrosion on the structural performance of annular RC columns under various loading conditions. The method includes the development of material degradation and residual structural strength models, as well as the determination of load-bearing capacity using the equivalent steel ring assumption and regression fitting approach. The proposed method is demonstrated to be effective using relevant experimental data.
Article
Engineering, Civil
Y. Sieffert, F. Vieux-Champagne, S. Grange, P. Gamier, J. C. Duccini, L. Daudeville
ENGINEERING STRUCTURES
(2016)
Article
Engineering, Mechanical
Serguei Potapov, Aurelien Masurel, Philippe Marin, Laurent Daudeville
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Engineering, Mechanical
Serguei Potapov, Aurelien Masurel, Philippe Marin, Laurent Daudeville
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Architecture
E. Fritsch, Y. Sieffert, H. Algusab, S. Grange, P. Garnier, L. Daudeville
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2019)
Article
Physics, Multidisciplinary
Andria Antoniou, Laurent Daudeville, Philippe Marin, Ahmad Omar, Serguei Potapov
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2018)
Article
Chemistry, Multidisciplinary
Abdallah Accary, Yann Malecot, Laurent Daudeville
APPLIED SCIENCES-BASEL
(2019)
Article
Mathematics, Interdisciplinary Applications
Hicham Benniou, Abdallah Accary, Yann Malecot, Matthieu Briffaut, Laurent Daudeville
Summary: The discrete element model proposed in this paper addresses the macroscopic behavior of concrete while taking into account the presence of free water in pores. This new constitutive model considers the influence of saturation ratio on triaxial compressive stresses in concrete structures subjected to severe loading. By introducing a dependency between water saturation ratio and inelastic deformation due to pore closure, the model aims to model cracking and compaction at the interaction level between discrete elements.
COMPUTATIONAL PARTICLE MECHANICS
(2021)
Article
Chemistry, Physical
Alejandro Ortega Laborin, Emmanuel Roubin, Yann Malecot, Laurent Daudeville
Summary: This paper conducts an in-depth study on the theoretical basis of strong discontinuity methods for local fracture simulations using the Embedded Finite Element Method (E-FEM). A new proposal of strong discontinuity enhancement functions is presented, improving basic kinematic coherence and robustness of E-FEM techniques for fracture simulations. Simulation results demonstrate increased robustness and potential for higher level application of E-FEM techniques.
Article
Computer Science, Interdisciplinary Applications
A. Ortega, E. Roubin, Y. Malecot, L. Daudeville
Summary: This paper analyzes the application of the Embedded Finite Element Method (E-FEM) in simulating local material heterogeneities. It discusses the evolution of weak discontinuity models within the E-FEM framework and establishes a theoretical basis for enhancing weak discontinuities. The paper introduces two enhancement functions and evaluates their performance through numerical simulations.
COMPUTERS & STRUCTURES
(2022)
Article
Mathematics, Interdisciplinary Applications
Abdallah Accary, Hicham Benniou, Yann Malecot, Matthieu Briffaut, Laurent Daudeville
Summary: This paper investigates the influence of saturation ratio on perforation and penetration of concrete by simulating the impact of ogive-nosed steel projectile on plain concrete targets surrounded by steel jackets.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
Proceedings Paper
Mathematics, Applied
Andria Antoniou, Laurent Daudeville, Philippe Marin, Serguei Potapov
V INTERNATIONAL CONFERENCE ON PARTICLE-BASED METHODS - FUNDAMENTALS AND APPLICATIONS (PARTICLES 2017)
(2017)
Article
Engineering, Civil
F. Vieux-Champagne, Y. Sieffert, S. Grange, C. Belinga Nko'ol, E. Bertrand, J. C. Duccini, C. Faye, L. Daudeville
EARTHQUAKE SPECTRA
(2017)
Proceedings Paper
Construction & Building Technology
Yannick Sieffert, Florent Vieux-Champagne, Stephane Grange, Philippe Garnier, Jean-Charles Duccini, Laurent Daudeville
HISTORICAL EARTHQUAKE-RESISTANT TIMBER FRAMING IN THE MEDITERRANEAN AREA
(2016)
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)
