Article
Engineering, Civil
Yaozhou Li, Zhiqiang Fan, Shuangqi Hu, Fei Zhang, Lishuang Hu, Zhongqing Xue
Summary: This study investigates the dynamic response of multi-cell thin-wall tubes with small aspect ratio and diameter thickness ratio under high velocity impacts of lightweight devices. Mass block impact tests were conducted on circular tubes, multi-cell tubes, and polyurethane foam filled multi-cell tubes. The results show that the dynamic enhancement coefficient of mean crushing force for multi-cell tubes and foam filled multi-cell tubes is higher compared to circular tubes. The folding half-wavelength of the tubes decreases with increasing impact velocity, and the effective stress level of multi-cell tubes increases with impact velocity and material strain hardening mechanism.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Composites
Yi-bin Zha, Shun Wang, Qi-hua Ma, Hui Zhang, Xue-hui Zhang, Tian-jun Zhou
Summary: This article investigates the crashworthiness of induced metal-composite thin-walled tubes under axial impact using a combination of experimental and numerical simulation methods. The study explores the effects of different induced designs and structural parameters on the crashworthiness of Al-CFRP hybrid tubes. A new multi-row induced structure is proposed, which improves the crashworthiness of the tubes. The results provide insights into the optimal design parameters and configurations for metal-composite hybrid thin-walled tubes.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Mehrdad Koloushani, Mohammad Reza Forouzan, Mohammad Reza Niroomand
Summary: In this study, the effects of diameter and thickness of thin-walled Aluminum tubes on crashworthiness criteria were investigated. The optimal diameter for a simple circular tube was found to be the smallest diameter in terms of resistance to global buckling. Increasing thickness and the ratio of thickness to diameter were found to improve the energy absorption and crushing force efficiency. Two equations were presented for predicting the maximum crushing force and crushing force efficiency of thin-walled metal tubes.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Hui Guo, Yunlai Deng, Shitong Fan, Renjie Pan
Summary: This study investigated the physical relationship between crushing properties and mechanical properties, and the structure of the profile, dividing the crushing curve into four typical stages: elastic, bending, compaction, and folding. The calculated results were close to the measured results in the first three stages with only 4.3% deviation, but it increased to 10.6% in the folding stage.
Article
Engineering, Aerospace
Rongchao Jiang, Zongyang Gu, Tao Zhang, Dawei Liu, Haixia Sun, Zhenkuan Pan, Dengzhi Peng
Summary: This study investigated the energy absorption characteristics of three types of thin-walled circular tubes under axial crushing, and found that the thickness and orientation of the materials significantly affect the energy absorption performance of the hybrid tube. Increasing the thickness of both materials and the number of specific plies can enhance the energy absorption capability of the hybrid tube.
Article
Mechanics
Zhipeng Gao, Dong Ruan, Hai Zhang, Jian Zhao, Zhanyuan Gao, Zhixin Huang
Summary: This paper conducts a systematic finite element analysis study to evaluate the effects of two main simulation techniques on the deformation modes and force-displacement curves of thin-walled tubes. By carrying out axial compressive tests on three types of thin-walled circular tubes with different geometrical parameters, and developing finite element models, the influences of indentation triggers and buckling modes are explored. The study finds that a suitable simulation technique can accurately mimic the deformation mode and corresponding force-displacement curve for thin-walled circular tubes.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2023)
Article
Engineering, Civil
Yubo Hou, Yong Zhang, Xiaolei Yan, Xiongming Lai, Jiming Lin
Summary: This paper presents a new design method for the sandwich column, and validates the accuracy of this design method through experiments and numerical analysis. The study finds that the geometrical characteristics of the sandwich column have a significant impact on its crashworthiness. The results show that the sandwich column with specific design parameters has the greatest energy absorption capacity.
THIN-WALLED STRUCTURES
(2021)
Article
Computer Science, Interdisciplinary Applications
Shigen Wang, Weigang An, Tianyu Lin, Xiasheng Sun, Xu Han
Summary: Tailor-welded blank (TWB), a representative technology in modern manufacturing, has promising applications in automotive energy absorbers due to its advantages in load-bearing capacity and lightweight. This study proposes an optimization strategy to improve the crashworthiness of TWB structures by simultaneously considering thickness distribution and weld line location. The numerical results demonstrate the effectiveness of this method in obtaining optimal thickness distribution and weld line location, thereby tailoring the force-displacement response of the structure.
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2022)
Article
Engineering, Civil
Xie Chen, Wenhao Wang, Fengnian Jin, Hualin Fan
Summary: This study designs and manufactures braided-textile reinforced conical tubular structures and investigates the effects of tapering on the structure and energy absorption characteristics. The results show that compared to single-layer conical tubes, double-layer conical tubes have better energy absorption performance, and foam filling has a positive impact on overall energy absorption, although multi-layer structures reduce the effectiveness of foam filling.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Zhi-jia Zhang, Jun Wang, Yong-jing Wang, Bin-chao Li, Jie Li, Gan Li, Ya-guang Sui, Qian-cheng Zhang, Feng Jin
Summary: The influence of temperature on the axial crushing behavior of multi-walled tube-reinforced aluminum foams (MWTRF) was investigated through experiment, numerical prediction, and theoretical analysis. The results show that the MWTRFs exhibit higher peak force and energy absorption performance at high temperature compared to the sum of aluminum foam (AF) and empty multi-walled tube (EMWT). The axial crushing performance of glued MWTRF is superior to that of unglued MWTRF, but this advantage decreases with increasing temperature due to a decrease in adhesive strength. The presence of AF in MWTRF inhibits buckling and alters the crushing deformation mode of EMWT, leading to significantly improved crushing and energy absorption performance of MWTRF. Furthermore, MWTRFs demonstrate outstanding energy absorption performance under high temperature in material selection.
THIN-WALLED STRUCTURES
(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
Materials Science, Composites
Dong Fan, Ma Qi-hua, Gan Xue-hui, Zhou Tianjun
Summary: The study introduces a new design that improves the energy absorption performance of AL/CFRP hybrid thin-walled tubes by introducing induced circular holes, and conducts experiments and finite element simulations under different loading conditions. The induced hole effectively reduces peak load and enhances energy absorption characteristics of the hybrid tubes, showcasing potential for improved impact resistance in advanced energy absorbing devices.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Multidisciplinary
Kadir Gunaydin, Aykut Tamer, Halit Suleyman Turkmen, Giuseppe Sala, Antonio Mattia Grande
Summary: The research investigated the energy absorption characteristics of chiral auxetic lattices filled cylindrical composite tubes under uniaxial and lateral quasi-static loads, finding that the energy absorption capability for axial quasi-static crushing decreased compared to hollow composite design, while the average energy absorption value in lateral loading significantly increased.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Civil
Ziqian Zhang
Summary: This paper focuses on studying the cross-sectional deformation of circular thin-walled tubes or shells under lateral compression between two rigid plates, which is an important mechanical issue. The study is conducted through both theoretical and finite element analysis methods, where a FEA simulation and experimental validation are carried out to analyze the mechanical response and deformation characteristics of the tubes. The study proposes assumptions for theoretical derivation and divides the compressive deformation of the tubes into elastic and plastic regions. By considering both geometric and material nonlinearities, an equilibrium equation is derived, and the predicted cross-sectional deformation in terms of the compressive force is obtained. The theoretical model is validated through simulations and comparisons with other methods. The research is important for studying the cross-sectional deformation of shells under lateral compression in various application areas.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Sau-Lon James Hu, Liang Su, Shuai Cong
Summary: This study introduces a novel methodology for updating sensitive material parameters of a piezoceramic thin-walled tube transducer using only a few characteristic quantities extracted from a measured impedance function of the transducer. The effectiveness of the proposed methodology is demonstrated through two numerical examples, including both computer simulation and lab experiment.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
TrongNhan Tran, Shujuan Hou, Xu Han, MinhQuang Chau
COMPOSITE STRUCTURES
(2015)
Article
Automation & Control Systems
NhatTan Nguyen, TrongNhan Tran, ShaoHui Yin, MinhQuang Chau, DucHieu Le
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2017)
Article
Engineering, Mechanical
NhatTan Nguyen, ShaoHui Yin, FengJun Chen, HanFeng Yin, VanThoan Pham, TrongNhan Tran
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Civil
TrongNhan Tran
THIN-WALLED STRUCTURES
(2017)
Article
Engineering, Civil
TrongNhan Tran
THIN-WALLED STRUCTURES
(2017)
Article
Engineering, Mechanical
TrongNhan Tran, Ahmad Baroutaji
ENGINEERING FAILURE ANALYSIS
(2018)
Article
Mechanics
Arameh Eyvazian, T. N. Tran, Abdel Magid Hamouda
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2018)
Article
Engineering, Civil
TrongNhan Tran
THIN-WALLED STRUCTURES
(2018)
Article
Computer Science, Interdisciplinary Applications
M. Q. Chau, X. Han, C. Jiang, Y. C. Bai, T. N. Tran, V. H. Truong
ENGINEERING COMPUTATIONS
(2014)
Article
Engineering, Mechanical
TrongNhan Tran, Shujuan Hou, Xu Han, NhatTan Nguyen, MinhQuang Chau
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2014)
Article
Engineering, Civil
TrongNhan Tran, Shujuan Hou, Xu Han, Wei Tan, NhatTan Nguyen
THIN-WALLED STRUCTURES
(2014)
Article
Engineering, Civil
TrongNhan Tran, DucHieu Le, Ahmad Baroutaji
ENGINEERING STRUCTURES
(2019)
Article
Mechanics
TrongNhan Tran
COMPOSITE STRUCTURES
(2017)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)