Article
Computer Science, Interdisciplinary Applications
Xihong Jin, Jun Lu, Weiyuan Guan, Guangjun Gao
Summary: This paper proposes a two-stage variable thickness expansion tube for the coupler system and investigates its crashworthiness performance through various tests and simulations. The study finds that the thickness variation and certain parameters have significant effects on specific energy absorption and crushing force efficiency. Furthermore, a multiobjective robust optimization process is developed to improve the reliability and performance of design optimization.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Engineering, Mechanical
Weiyuan Guan, Yao Yu, Guangjun Gao
Summary: This study introduces a new type of combined splitting circular tube energy absorber for subway vehicles and demonstrates its excellent performance in dynamic crushing through experiments and numerical simulations. The results show high crush force efficiency and steady crushing forces of the combined splitting circular tube absorber. The numerical models validate the experimental findings, indicating superior crashworthiness of the absorber under eccentric loading.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Engineering, Civil
Jixiang Li, Yong Zhang, Yangyang Kang, Feng Zhang
Summary: This paper explores the use of side hierarchical structures to enhance the energy absorption of thin-walled protective devices. Numerical simulations and axial crush testing demonstrate the improved crush response and energy absorption capabilities of hierarchical structures. The study concludes that the hierarchical factor and loading angle significantly impact the crushing response, with different structures exhibiting critical hierarchical orders, with 4th order structures showing superior crashworthiness.
THIN-WALLED STRUCTURES
(2021)
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
Materials Science, Multidisciplinary
Xiaolin Deng, Fuyun Liu, Guangwen Huang, Jiale Huang
Summary: This study investigates the optimization and performance improvement of the bioinspired sinusoidal honeycomb (BSH) structure in energy absorption. A surrogate model of specific energy absorption (SEA) and initial peak crushing force (PCF) is constructed, and non-dominated sorting genetic algorithm II is used for multi-objective optimization. The results show that the relationship between SEA and amplitude is not significant, while PCF increases with amplitude and both SEA and PCF increase with wall thickness. Additionally, the Pareto frontiers of BSHs with different wavenumbers exhibit certain similarity. The optimal solution of BSH under constraints is found to be 2.5 T, with a decrease of 15.52% in PCF and an increase of 6.77% in SEA compared to the original solution. The accuracy of the optimal solution is verified numerically.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Multidisciplinary Sciences
Xinmei Xiang, Dehua Shao, Xin Zhang, Shaolin Zhang, Yijie Liu
Summary: The compression performance of tapered tubes was studied using finite element simulations. The results showed that lateral corrugation and thickness gradient design can improve the energy absorption performance of the tubes.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2023)
Article
Mechanics
Jianbo Chen, Eric Li, Qiqi Li, Shujuan Hou, Xu Han
Summary: In this study, a new type of energy-absorbing thin-walled tube with concave angles (CTSs) was proposed, with CTS3 demonstrating superior energy absorption capability compared to other tubes. Theoretical and numerical analyses predicted and evaluated the performance factors of CTS3, determining it as possessing the best energy absorption capacity.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Han Huang, Xintao Yang, Qinghao Yan, Zhixin Xiang, Shucai Xu
Summary: A novel bio-inspired sandwich structure with sinusoidal cores based on the dactyl club microstructure of Odontodactylus scyllarus was developed and comprehensively investigated. The crashworthiness of different configurations and dimensions of the core section were optimized using a multiobjective optimization method. The study found that design dimensions and configurations significantly affect the crashworthiness of the sandwich structure.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Weinian Guo, Chengxing Yang, Ping Xu, Liting Yang, Yanjie Wen, Xihong Jin
Summary: The energy absorption structure of a train plays a crucial role in passive safety protection during train collisions. It is necessary to improve stability and energy absorption capacity in the design process. Cutting anti-climbing energy absorption structures provide good stability and energy absorption, but generate considerable heat. Therefore, thermal-solid coupling simulations and crashworthiness optimization are important for cutting energy absorption structures.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Civil
Ruixian Qin, Xi Wang, Feng Gao, Bingzhi Chen
Summary: This study introduced a novel multi-cell hierarchical hexagon honeycomb structure by changing the topological connection, which enhances energy absorption efficiency and crashworthiness performance. Optimization of wall thickness and length coefficient can improve specific energy absorption and decrease peak crushing force, leading to superior crashworthiness performance. The optimal geometric parameters of the HHHS show significant enhancement and energy absorbing potential, making it a suitable choice for energy absorption considering the balance between crashworthiness and cost.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Manufacturing
Wangyu Liu, Lin Jin, Yuanqiang Luo, Xiaolin Deng
Summary: This paper investigates the crashworthiness of thin-walled tapered tubes with star-shaped cross section under oblique impact, and proposes a spline curve linking path for multi-objective optimization. The optimized spline curve tapered star-shaped tube demonstrates improved crashworthiness compared to normal tapered tubes.
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2021)
Article
Engineering, Mechanical
Zhonggang Wang, Xinxin Wang, Kai Liu, Jian Zhang, Zhaijun Lu
Summary: This study introduces two dimensionless indexes to assess the crashworthiness of honeycomb sandwich structures under low-speed oblique impact, which can better capture the crashworthiness of sandwich structures of different configurations.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Civil
Junyuan Zhang, Danfeng Zheng, Bingquan Lu, Tianqi Zhang
Summary: This study introduces a novel tube design with hybrid cross section to improve the energy absorption performance under oblique loads by adding ribs at the bottom end of the tube. Experimental and finite element model verification shows that the single-double hybrid tube with hybrid cross section has the best energy absorption performance. Additionally, the direction, height, and number of ribs also influence the energy absorption performance, and increasing the number of ribs can enhance the stability of the hybrid cross section tubes.
THIN-WALLED STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Xiaolin Deng, Shangan Qin, Jiale Huang
Summary: The study shows that the AVTLCT with N = 6 has better scalability and exhibits higher energy absorption and lower F-max values compared to the AVTLCT with N = 10 after optimization.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Composites
Weiwen Cai, Qihua Ma, Yazhe Wang, Xuehui Gan
Summary: This paper presents an experimental and numerical study on the crashworthiness of thin-walled Al/CFRP hybrid tubes with pre-existing transverse compression damage. It is found that initial damage has limited effect on the energy absorption capacity of hybrid tubes, but affects their deformation pattern and damage evolution. Finite element simulations explore the effect of different structural parameters on the crashworthiness of the hybrid tubes, and a multi-objective snake optimizer algorithm is proposed to obtain the optimum hybrid tube structure for multiple loading conditions.
POLYMER COMPOSITES
(2023)
Article
Engineering, Mechanical
Chang Qia, Yong Sun, Hai Tao Hu, Da-Zhi Wang, Guang-Jun Cao, Shu Yang
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2016)
Article
Engineering, Civil
Chang Qi, Yong Sun, Shu Yang
THIN-WALLED STRUCTURES
(2018)
Article
Engineering, Manufacturing
Chang Qi, Shu Yang
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2014)
Article
Computer Science, Interdisciplinary Applications
Shu Yang, Lei Yan, Chang Qi
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2019)
Article
Engineering, Mechanical
Chang Qi, Feng Jiang, Chen Yu, Shu Yang
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2019)
Article
Engineering, Mechanical
Shu Yang, Yong Sun, Chang Qi
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2020)
Article
Engineering, Multidisciplinary
Chang Qi, Feng Jiang, Alex Remennikov, Lian-Zheng Pei, Jun Liu, Jun-Shan Wang, Xiang-Wei Liao, Shu Yang
COMPOSITES PART B-ENGINEERING
(2020)
Article
Engineering, Mechanical
Dulara Kalubadanage, Alex Remennikov, Tuan Ngo, Chang Qi
Summary: The study focuses on sacrificial cladding systems based on negative Poisson's ratio core topologies as a protective technology for critical infrastructure. Both experimental and numerical results show that these systems exhibit good energy absorption capabilities under blast loads. The deformation pattern and negative Poisson's ratio of the system vary with blast loading intensity, and careful design is required to prevent overloading under different blast threats.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Civil
Lei Yan, Qing-Tao Guo, Shu Yang, Xiang-Wei Liao, Chang Qi
Summary: The research explores the impact of spot weld layout design on structural performance and proposes an innovative size optimization procedure for irregular spacings, resulting in a reduction of 33.3% in spot welds without compromising structural static and NVH performances.
THIN-WALLED STRUCTURES
(2021)
Review
Engineering, Multidisciplinary
Chang Qi, Feng Jiang, Shu Yang
Summary: Honeycombs are ultra-light materials with outstanding mechanical properties, widely used in various fields. Different designs at different scales affect the mechanical properties of honeycombs, and classifying honeycomb designs can better understand their characteristics.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Civil
Chang Qi, Feng J. Iang, Shu Yang, Alex Remennikov
Summary: In this study, the mechanical properties of REC honeycombs with different geometric parameters were thoroughly investigated through finite element simulations and theoretical analyses. It was found that adjusting the geometric parameters of the unit cell can tailor the crushing stress, energy absorption characteristics, and NPR value of the honeycomb, triggering specific deformation mechanisms at meso and macro scales. The study provides insights for engineering applications by revealing the effects of geometric parameters on the energy absorption capabilities and NPR values of REC honeycombs.
THIN-WALLED STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Feng Jiang, Shu Yang, Chang Qi, Chen Ding
Summary: In this study, a novel three-dimensional reentrant circular (REC) auxetic metamaterial was proposed and its quasi-static crushing responses were investigated. The effect of different polymer matrix materials on the crushing behaviors of the REC specimens was examined, and it was found that the larger relative density leads to larger values of specific energy absorption. The results show the potential of the REC metamaterial in mechanical applications.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Chang Qi, Lian-Zheng Pei, Alex Remennikov, Shu Yang, Jun Liu, Jun-Shan Wang, Xiang-Wei Liao
COMPOSITE STRUCTURES
(2020)
Article
Mechanics
Chang Qi, Alex Remennikov, Lian-Zheng Pei, Shu Yang, Zhi-Hang Yu, Tuan D. Ngo
COMPOSITE STRUCTURES
(2017)
Article
Transportation Science & Technology
Da-Zhi Wang, Guang-Jun Cao, Chang Qi, Yong Sun, Shu Yang, Yu Du
SAE INTERNATIONAL JOURNAL OF MATERIALS AND MANUFACTURING
(2016)
Article
Engineering, Civil
Jian Xue, Weiwei Zhang, Jing Wu, Chao Wang, Hongwei Ma
Summary: This study integrates a plate-type local resonator with varying free boundaries within a plate to convert the initial low-order global vibration modes into localized vibration modes. A novel semi-analytical method is proposed to analyze the free vibration of the plate with thickness and displacement discontinuities. The results show that by applying free boundary conditions, the low-order localized vibration frequencies can be significantly reduced without affecting the low-order global frequencies.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Merve Tunay
Summary: In recent years, there has been an increasing number of studies on the mechanical properties of sandwich structures manufactured with the Fused Deposition Modeling (FDM) method. However, there is still a lack of experimental data on the mechanical characteristics of FDM-manufactured sandwich structures under different thermal aging durations. In this experiment, the energy absorption capabilities of sandwich structures with different core geometries were investigated under various thermal aging durations. The results showed that the core topology significantly influenced the energy absorption abilities of the sandwich structures.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Zi-qin Jiang, Zi-yao Niu, Ai-Lin Zhang, Xue-chun Liu
Summary: This paper proposes a crosssection corrugated plate steel special-shaped column (CCSC) that improves the bearing capacity and overall stability of structural columns by using smaller material input. Through theoretical analysis and numerical simulation, the overall stability of the CCSC under axial compression is analyzed. The design method and suggestions for the stability of CCSC are put forward. Compared with conventional square steel tube columns, the CCSC has obvious advantages in overall stability and steel consumption.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yong Zhang, Yangang Chen, Jixiang Li, Jiacheng Wu, Liang Qian, Yuanqiang Tan, Kunyuan Li, Guoyao Zeng
Summary: A hybrid TPMS method was proposed to develop a new TPMS structure, and the mechanical properties of different TPMS structures were studied experimentally and numerically. Results showed that the hybrid TPMS structure had higher energy absorption and lower load-carrying capacity fluctuation. Further investigations revealed that the topological shape and material distribution had significant influence on mechanical properties, and the hybrid additive TPMS structure exhibited significant crashworthiness advantage in in-plane crushing condition.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Tongfei Sun, Ye Liu, Kaoshan Dai, Alfredo Camara, Yujie Lu, Lijie Wang
Summary: This paper presents a series of experimental and numerical studies on the performance of a novel double-stage coupling damper (DSCD). The effects of damper configuration, friction-yield ratio (Rfy), and loading protocol on the hysteresis performance of the DSCD are investigated. The test results demonstrate that the arrangement of ribs in the DSCD increases its energy dissipation capacity. Numerical analysis reveals that the length of the friction mechanism and the clearance between the yield segment and the restraining system affect the energy dissipation and stability of the damper.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Jeonghwa Lee, Young Jong Kang
Summary: This study investigates the local buckling behavior and strength of I-shape structural sections by considering flange-web interactions through three-dimensional finite element analysis. The study provides a more reasonable estimation of local buckling strength by considering the ratio of flange-web slenderness and height-to-width ratio, and presents design equations for flange local and web-bend buckling coefficients.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yizhe Chen, Wenfeng Xiang, Qingsong Zhang, Hui Wang, Lin Hua
Summary: This study investigates the surface modification of a nickel plate to improve the bonding strength with carbon fiber-reinforced plastics (CFRP). The results show that different surface modification methods, including sandblasting, coupling agent treatment, and compound coupling agent treatment, significantly enhance the bonding strength of CFRP/Ni joints. The research provides insights into improving the connection between nickel and CFRP, as well as other heterogeneous materials.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Agha Intizar Mehdi, Fengping Zhang, Moon-Young Kim
Summary: A spatial stability theory of mono-symmetric thin-walled steel beams pre-stressed by spatially inclined cables is derived and its validity is demonstrated through numerical examples. The effects of initial tension, deviator numbers, inclined cable profiles, and bonded/un-bonded conditions on lateral-torsional buckling of the pre-stressed beams are investigated, with a specific emphasis on the effects of increasing initial tension.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Teng Ma, Jinxiang Wang, Liangtao Liu, Heng Li, Kui Tang, Yangchen Gu, Yifan Zhang
Summary: The structural response of water-back plate under the combined action of shock wave and bubble loads at water depths of 1-300 m was numerically investigated using an arbitrary Lagrange-Euler method. The accuracy of the numerical model was validated by comparing with experimental and theoretical results. The influences of water depth and length-to-diameter ratio of the charge on the combined damage effect were analyzed. The results show that as water depth increases, the plastic deformation energy of the water-back plate decreases, and the permanent deformation mode changes from convex to concave. When the charge has a large length-to-diameter ratio, the plastic deformation energy of the radial plate is higher than that of the axial plate, and the difference decreases with increasing water depth. Increasing the length-to-diameter ratio enhances the combined damage effect in the radial direction in deep-water environments.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiu-Yun Li, Ben Young
Summary: This paper investigates the flexural performance of CFS zed section members bent about the neutral axis parallel to the flanges through experimental and numerical analysis. The results show that the current direct strength method generally provides conservative predictions for the flexural strength of unstiffened zed section members, but slightly unconservative design for edge-stiffened zed section beams. The nominal flexural strengths of zed section members with edge stiffeners were found to be underestimated by 17% to 21% on average. Modified DSM formulae are recommended for the design of CFS zed section beams.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Weinan Gao, Bo Song, Xueyan Chen, Guochang Lin, Huifeng Tan
Summary: This paper presents a precise method for predicting deformation in large-scale inflatable structures, utilizing finite element modeling and laser scanning technique. The study shows a good agreement between the predictive model and non-contact measurement results.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Fei Gao, Zongyi Wang, Rui Zhu, Zhenming Chen, Quanxi Ye, Yaqi Duan, Yunlong Jia, Qin Zhang
Summary: This research investigates the mechanical properties of high-strength ring groove rivet assemblies and the load resistances of riveted T-stubs. Experimental tests reveal that Grade 10.9 rivets have higher yield strength and strain, and lower ultimate strain, making them suitable for high-strength ring groove rivet connections. Increasing the rivet diameter benefits the T-stubs, while increasing the flange thickness is not always advantageous. The Eurocode 3 method is not suitable for T-stubs connected through ring groove rivets, while the Demonceau method is conservative.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Shangchun Jiang, Liangfeng Sun, Haifei Zhan, Zhuoqun Zheng, Xijian Peng, Chaofeng Lue
Summary: This study investigates the bending behavior of two-dimensional nanomaterials, diamane and its analogous structure TBGIB, through atomistic simulations. It reveals that diamane experiences structural failure under bending, while TBGIB bends elastically before undergoing structural failure. The study provides valuable insights for the application of these materials in flexible electronics.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiang Zhang, Jianian Wen, Qiang Han, Hanqing Zhuge, Yulong Zhou
Summary: In this study, the mechanical properties of Q690 steel H-section columns under bi-directional cyclic loads are investigated, considering the time-varying characteristics of corrosion. A refined finite element (FE) model is built to analyze the degradation of mechanical property and failure mechanisms of steel columns with different design parameters during the whole life-cycle. The study proposes a quantitative calculation method for the ultimate resistance and damage index of steel columns, taking into account the ageing effects. The findings emphasize the importance of considering the ageing effects of steel columns in seismic design.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yuda Hu, Qi Zhou, Tao Yang
Summary: The magneto-thermo-elastic coupled free vibration of functionally graded materials cylindrical shell is investigated in this study. The vibration equation in multi-physical field is established and solved using the Hamilton principle and the multi-scale method. The numerical results show that the natural frequency is influenced by various factors such as volume fraction index, initial amplitude, temperature, and magnetic induction intensity.
THIN-WALLED STRUCTURES
(2024)