Article
Engineering, Manufacturing
Redouane Lombarkia, Augustin Gakwaya, Dennis Nandlall, Marie-Laure Dano, Julie Levesque, Philippe Vachon-Joannette
Summary: This paper investigates the failure mechanisms involved in the crushing of aerospace structures during crash events and aims to optimize traditional crash structures by studying damage initiation, evolution, and absorbed energy of composite materials. The results from numerical simulations and experiments show that samples with lower heights and chamfer angles have better energy dissipation capabilities compared to samples with higher heights and steeple triggers.
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2022)
Article
Engineering, Mechanical
Yabin Deng, Yiru Ren, Xinwei Fu, Hongyong Jiang
Summary: This study proposed a novel structure, BBSTS, which demonstrated superior energy absorption performance under oblique crushing and revealed its complex reinforcement mechanisms. Parametric analysis was conducted to study the effects of bio-inspired joints with different thicknesses and angles on energy absorption characteristics.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Civil
Ismail Ozen, Hasan Gedikli, Mustafa Aslan
Summary: This paper aims to investigate the energy absorbing and deformation behaviors of composite crash boxes with different geometries. Experimental and numerical studies demonstrate that composite crash boxes filled with cellular structures perform better in terms of energy absorption performance.
ENGINEERING STRUCTURES
(2023)
Article
Polymer Science
Ali Farokhi Nejad, Seyd Saied Rahimian Koloor, Mohd Luqman Hakim Arifin, Ali Shafiei, Shukur Abu Hassan, Mohd Yazid Yahya
Summary: This study fabricates and tests composite tubes with different length aspect ratios using the pultrusion method, and investigates the crashworthiness of hybrid glass-carbon composite tubes under quasi-static axial loading through experimental and numerical simulations. The results show that hybrid glass/carbon tubes exhibit high specific energy absorption and crash force efficiency under impact loading.
Article
Engineering, Mechanical
Peng Hao, Lin'an Li, Kai Liu, Zhiqiang Xie, Jianxun Du
Summary: In this study, the internal structure of horsetail plants was investigated to improve the energy absorption performance of thin-walled structures. Four biomimetic thin-walled models with different cross-sectional shapes were proposed and established. The results showed that the square cross-section structure with a wall thickness between 1 and 1.25 mm exhibited better crushing resistance, and the energy absorption performance was enhanced when the side length height ratio was 1:1.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
S. Anand, J-E Chambe, C. Bouvet, S. Rivallant
Summary: This study investigates the applicability of Discrete Ply Modeling (DPM) to crushing of composite tubes and analyzes the effect of stacking sequence and trigger geometry on Specific Energy Absorption (SEA). The best performing stacking sequence was found to be 90/0 (2)/90/0 (3)/90/0/90 in terms of SEA value.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Mechanics
Florent Grotto, Samuel Rivallant, Christophe Bouvet
Summary: This paper presents the development of a new 3D finite element model for simulating the behavior of unidirectional fiber composites during crushing. The model is validated through comparison with experimental results, showing its accuracy in capturing the crushing behavior.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Linwei Zhang, Yong Zhong, Wenxiao Tan, Chao Gong, Yong Hu, Zhonghao Bai
Summary: This study introduces a group of bionic thin-walled tubes inspired by the microstructure of bamboo and beetle forewing. Experimental testing and finite element modeling are conducted to validate their performance. The crushing performance of bionic thin-walled tubes and traditional thin-walled tubes is compared, and the optimal design is determined.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Mechanics
Mincen Wan, Dayong Hu, Hongbo Zhang, Benlou Pi, Xubin Ye
Summary: This study investigates the crashworthiness performance of four types of tubular lattice structures based on triply periodic minimal surfaces (TPMS-T) and finds that they outperform traditional tubes. The effects of relative density, density gradient, and hybrid design on crashworthiness are analyzed, and it is found that they can improve crashworthiness performance.
COMPOSITE STRUCTURES
(2024)
Article
Materials Science, Multidisciplinary
Jianxun Du, Chengzhou Xue, Zhengjian Feng, Chaoqi Xu, Kai Liu
Summary: This study proposes a bio-mimetic lightweight thin-walled impact-resistant structure based on the beetle's exoskeleton for micro aerial vehicles. The energy absorption characteristics of the structure under axial impact loading are calculated and analyzed, and important parameters such as impact angle, protective layer thickness, and wall thickness are optimized and discussed. The research findings provide insights into the design and optimization of micro aerial vehicles.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2023)
Article
Engineering, Civil
Liang Wan, Dayong Hu, Mincen Wan, Zhenyu Yang, Hongbo Zhang, Benlou Pi
Summary: In this study, a novel tubular lattice structure with triply periodic minimal surface (TPMS), called TPMS-T, was manufactured to investigate its energy absorption characteristics under lateral crushing through experiments and finite element simulations. The results showed that TPMS-T exhibited superior crashworthiness performance compared to the single circular tube (SCT) and typical nested tube systems. The impact of relative density, tube thickness, and tube outer diameter on the crushing behaviors of TPMS-T was numerically investigated, and multi-objective optimization design was conducted to obtain optimized TPMS-T configurations for lateral crushing.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Manufacturing
Min-Gu Han, Seung-Hwan Chang
Summary: The compressive characteristics of egg-box energy-absorbing cores composed of plain-weave carbon/epoxy composites were analyzed via finite-element analysis and experimentally validated. The simulation technique successfully predicted the crushing behavior of the egg-box energy-absorbing core, and the corresponding failure mode under compression was estimated successfully.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Civil
Sunil Kumar Sharma, Jaesun Lee
Summary: This paper presents a novel bio-inspired thin-walled tube design based on human DNA and polar bear structures, with improved crashworthiness performance under axial impact. Through numerical simulations and experimental comparisons, an optimized structure with enhanced energy absorption ability is suggested over the base tube.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Materials Science, Multidisciplinary
Haiping Ding, Hui Guo, Pei Sun, Shuang Huang, Tao Yuan, Yansong Wang
Summary: Recently, there has been a lot of interest in auxetic honeycombs due to their lightweight, excellent energy absorption capacity, and high shear stiffness. This paper introduces a new hybrid honeycomb structure called the hybrid star-shaped tetra-chiral honeycomb (STCH). Numerical simulations were performed to study the deformation and compression behavior of the STCH, and comparisons were made with the star-shaped honeycomb (SSH) and tetra-chiral honeycomb (TCH).
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Shuguang Yao, Yili Zhou, Zhixiang Li, Peng Zhang, Yuehao Cao, Ping Xu
Summary: The study designed a square frustum lattice structure (SFLS) using a stable flat-topped pyramid as the structural cell and analyzed its energy absorption characteristics through experiments and simulations. It was found that the parameterization of SFLS influenced its energy absorption performance, and the modified theoretical prediction model accurately predicted the structure's performance.
COMPOSITE STRUCTURES
(2021)
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)