Article
Engineering, Mechanical
Seyed Mohammad Hossein Mirbagheri, Mina Salehi
Summary: This article investigates the quasi-static compressive behavior and drop weight impact tests of aluminum foam-filled tubes. The results show that the NE curves in dynamic tests were cyclic, whereas in static tests they were asymptotic non-linear. The study also found that CE and NE energies were more effective in recognizing plastic deformation and crushing behavior than SEA energy.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(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
Qing Jin, Jun Wang, Jiye Chen, Fengling Bao
Summary: A kind of innovative foam-filled GFRP tube with lattice frame reinforcement was proposed to improve energy absorption capacity. Experimental results and analytical solutions demonstrated that lattice frame reinforcement effectively increased compressive strength and energy absorption. This study provided a promising approach for designing lightweight composite columns with high energy absorption capacity.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Mingzhe Li, Fuming Yang, Chi Zhan, Robert Mccoy, Dean Jaradi, Weiyi Lu
Summary: The use of hollow glass microspheres as filling material significantly enhances the energy absorption efficiency of thin-walled tubes by improving the interaction between the filler and the tube wall.
COMPOSITE STRUCTURES
(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
Mao Yang, Bin Han, Yongjian Mao, Jun Zhang, Tian Jian Lu
Summary: This study proposed polymeric foam filled truncated metallic conical sandwich shells with corrugated cores and systematically investigated their energy absorption characteristics under axial compression. The results showed that the foam filled structures exhibited higher energy absorption than the unfilled counterpart, with the foam filling corrugated channel structure showing the best specific energy absorption performance.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jianxun Zhang, Jinlong Du, Fuxing Miao, Haoyuan Guo
Summary: This paper studies the large deflection of the slender circular metal foam-filled tube under transverse loading through theoretical and numerical analysis. The yield criterion and analytical solution for the plastic behavior of the foam-filled tube are proposed, considering the interaction between bending, stretching, and foam strength. The numerical results confirm the accuracy of the analytical model. The influences of various factors on the load-carrying capacity and energy absorption of the foam-filled tubes are discussed in detail.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Ru-Yang Yao, Bei Zhang, Guan-Sheng Yin, Zhen-Yu Zhao
Summary: The present research investigates the axial crushing behaviors of foam-filled holed tube through quasi-static compression tests. It is found that filling aluminum foam can greatly enhance the energy absorption performance of the empty holed tube. A novel theoretical model for concertina mode of foam-filled holed tube is proposed and validated, with detailed discussions on the interaction between tube wall and foam filler as well as normalized mean crushing force and specific energy absorption.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Hamid Hasanzadeh, Ehsan Mohtarami, Mohammad Ebadati, Kazem Reza Kashyzadeh, Mostafa Omidi Bidgoli
Summary: This research investigates the experimental and numerical study of crushing behavior and buckling modes of thin-walled truncated conical shells under axial loading. The results suggest that the presence of cutouts reduces the maximum force and energy absorption, and changes the failure modes.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Polymer Science
Yang Wei, Shuaifeng Tang, Si Chen, Qiudong Wang, Jiaqing Wang
Summary: This paper proposes a new type of polyurethane foam-filled bamboo composite tube and conducts experimental research on it. The results show that the foam filler can enhance the stability and bearing capacity of the tube, but not all foam-filled tubes are superior to unfilled tubes. Reducing the height of the bamboo composite tube and increasing the number of winding layers can effectively increase the positive effect of the foam filler on energy absorption.
Article
Materials Science, Multidisciplinary
Tamer A. Sebaey, Harri Junaedi, Hassan Alshahrani, Rakan Alyamani, Khaled Akkad
Summary: During the design process of automotive composite structures, the designer needs to consider both the mechanical characteristics and the sensitivity of the design to environmental factors in order to ensure safety and feasibility. This experimental study focuses on the effect of thermal aging on the crashworthiness of carbon/epoxy composite tubes. The results show that the addition of foam improves load carrying capacity and energy absorption, while the thermal degradation and debonding of the matrix are the main factors in reducing crashworthiness.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Shilong Wang, Min Zhang, Wenjie Pei, Feng Yu, Yuhong Jiang
Summary: This study designs X-shaped rib-reinforced foam-filled tubes and analyzes the effects of different foam fillers and arrangement on their performance. The results show that diagonally filling the tubes with PLA foam blocks leads to better energy absorption capacity, while diagonally filling with two aluminum blocks achieves higher crushing strength. Additionally, filling the tubes with different foam blocks does not always have advantages.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Xin Ren, Yi Zhang, Chuan Zhen Han, Dong Han, Xiang Yu Zhang, Xue Gang Zhang, Yi Min Xie
Summary: By filling rigid polyurethane foam into hollow auxetic tubes, this study successfully enhanced the energy absorption capacity. The composite foam-filled auxetic tubes demonstrated superior energy absorption compared to single foams and hollow tubes. Geometrical parameters such as wall thickness and ellipticity significantly impact the structural deformation mode and energy absorption of the FFATs.
THIN-WALLED STRUCTURES
(2022)
Article
Mechanics
Yong-jing Wang, Zhi-jia Zhang, Xiao-wei Xue, Jian Zhou, Zhong-xiao Song
Summary: The study introduced a novel sandwich square tube filled with plate-lattice structures, which significantly improved the load bearing and energy absorption capacity of the tube. The plate-lattice filler enhanced the stability and compressive performance of the sandwich square tube, resulting in elevated crushing performance and energy absorption capability.
COMPOSITE STRUCTURES
(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
Saima Ali, David Thambiratnam, Sabrina Fawzia, Khac Duy Nguyen, Haden van den Elsen, Ignacio Alvear Fujii
Summary: This study aims to detect and locate damage in an innovative slab-on-girder pedestrian bridge model using vibration characteristics and modal flexibility method. The results show that this approach is effective for assessing both single and multiple damages.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Geological
Amin Miri, Jabbar Ali Zakeri, David P. Thambiratnam, T. H. T. Chan
Summary: This paper investigates the possibility of reinforcing the ballast layer with geotextiles to mitigate the track buckling problem in transition zones. The laboratory experiments show that adding the geotextile layer can significantly increase the lateral resistance of the ballast layer, and increase the track buckling temperature.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Civil
T. Tafsirojjaman, David P. Thambiratnam, N. H. Ramli Sulong, Sabrina Fawzia
Summary: This study aims to develop a finite element (FE) modelling numerical approach to simulate the cyclic response of CFRP strengthened SHS beam-column connections. The research findings show that CFRP strengthened connections have improved structural performance and less tendency for buckling.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Zihong Gan, Yan Zhuge, David P. Thambiratnam, Tommy H. T. Chan, Tatheer Zahra, Mohammad Asad
Summary: This paper provides an overview of recent advances in the development of auxetic cementitious composites and analyzes and summarizes their mechanical properties under different loading conditions. The expansionary feasibility of the parent material to introduce auxetic behavior, along with the identification of limitations, innovative composition methods, and facilitation of auxetic features, are highlighted.
INTERNATIONAL JOURNAL OF PROTECTIVE STRUCTURES
(2022)
Article
Engineering, Civil
Mohammad Asad, Tatheer Zahra, David P. Thambiratnam, Tommy H. T. Chan, Xuemei Liu, Yan Zhuge, Mark Hayne, Anthony Morris, Christina Nguyen
Summary: This paper summarises the development of a state-of-art impact testing machine that can simulate impacts such as vehicular crashes or debris impacts on structures. The machine features a high-speed projectile, an innovative braking mechanism, and an advanced data acquisition system, enabling quantitative and qualitative testing of target structures.
INTERNATIONAL JOURNAL OF PROTECTIVE STRUCTURES
(2022)
Article
Engineering, Civil
Saima Ali, Xuemei Liu, Sabrina Fawzia, David Thambiratnam
Summary: This paper proposes the use of improved cement-based layers to enhance the performance of flexible runway pavements. The study investigates the performance of retrofitted runway pavements under static and moving loads through experimental study and numerical simulations. The findings suggest that the improved cement-based layers can effectively reduce surface deflections and distribute vertical stresses to prevent failure.
AUSTRALIAN JOURNAL OF CIVIL ENGINEERING
(2023)
Review
Engineering, Mechanical
T. Tafsirojjaman, Attiq Ur Rahman Dogar, Yue Liu, Allan Manalo, David P. Thambiratnam
Summary: Fiber-reinforced polymer (FRP) composite materials are widely used in engineering due to their superior mechanical properties and durability. This paper provides a comprehensive review of various techniques to improve the performance and design of steel structures using FRP composites, and presents strength prediction models for evaluating and safely designing FRP strengthened steel structures.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Civil
Nouman Khattak, Hossein Derakhshan, David P. Thambiratnam, Nimal J. Perera, Jason M. Ingham
Summary: In this study, heritage URM buildings in Brisbane City, Australia, and its surrounding suburbs were characterized using the Queensland Heritage Register and online digital resources. The combination of these sources proved to be successful in characterizing URM buildings.
AUSTRALIAN JOURNAL OF STRUCTURAL ENGINEERING
(2023)
Article
Construction & Building Technology
Sonam Dorji, Hossein Derakhshan, David P. Thambiratnam, Tatheer Zahra, Alireza Mohyeddin
Summary: This paper presents a comprehensive experimental study on the behavior and basic material properties of semi-interlocking mortarless masonry. The experiments included testing of ungrouted masonry units, prisms, and wallets, as well as grouted cores. The results provide valuable information for understanding the behavior of semi-interlocking mortarless masonry and for developing material models for future research.
MATERIALS AND STRUCTURES
(2023)
Article
Construction & Building Technology
Nouman Khattak, Hossein Derakhshan, David P. Thambiratnam, Daniele Malomo, Nimal Jayantha Perera
Summary: This research focuses on numerically modelling the seismic behaviour of unreinforced masonry structures with interconnected in-plane and out-of-plane loaded walls. The study adopts the Applied Element Method (AEM) to simulate the seismic behaviour of two URM building prototypes, calibrating and validating the AEM models against experimental data. The results suggest that the validated AEM models can be useful for seismic assessment of URM structures with interlocked IP and OOP loaded walls.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Hossein Derakhshan, Jason Ingham, Michael Griffith, David Thambiratnam
Summary: This study conducted tests on two roof structures representing vintage unreinforced masonry building components. It found that the roof behavior was shear-dominated, and the strength of the connections played a crucial role in roof stiffness and strength.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2023)
Article
Engineering, Civil
T. Tafsirojjaman, Nicholas Wirth, David P. Thambiratnam, N. H. Ramli Sulong, Allan Manalo, Sabrina Fawzia
Summary: This study conducted detailed experiments to investigate the use of carbon fibre reinforced polymer (CFRP) and glass fibre reinforced polymer (GFRP) as strengthening measures for square hollow sections (SHS). The results showed that the strengthened members exhibited improved performance, including lower moment degradation, higher load-carrying capacity, and greater stiffness and ductility. Additionally, GFRP strengthening was found to be more effective for cyclically loaded steel SHS. The developed theoretical model accurately predicted the ultimate moment capacities of the strengthened SHS members.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Construction & Building Technology
Mohammad Asad, Nay Win, Tatheer Zahra, David P. Thambiratnam, Tommy H. T. Chan, Yan Zhuge
Summary: This paper presents an experimental investigation on the flexural response and energy absorption of auxetic cementitious composites reinforced with polyurethane foam. The results show that the auxetic fabric overlayed composites exhibited increased energy absorption and ductility without any signs of debonding compared to the commonly used carbon fibre overlayed composites. The findings will have applications for protecting structures that are vulnerable to impacts.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Seyed Meghdad Ghaseminia, Tatheer Zahra, David P. Thambiratnam, Julian Thamboo
Summary: Reinforced concrete shear walls are designed to resist lateral actions in buildings and carry vertical loads. Recent changes in the Australian concrete standard require double layers of reinforcement for ductile walls, while single layered reinforcement is considered non-ductile. This study conducts experimental testing and in-depth data analysis to investigate the performance of single and double layered RC walls.
Proceedings Paper
Engineering, Civil
Shovona Khusru, Sabrina Fawzia, David P. Thambiratnam, Mohamed Elchalakani
Summary: Hybrid double-skin tubular column, formed by FRP tube, concrete, and steel, is gaining popularity due to its high axial capacity, corrosion resistance, and improved ductility. The use of rubberised concrete in this column enhances its ductility and strength.
10TH INTERNATIONAL CONFERENCE ON FRP COMPOSITES IN CIVIL ENGINEERING (CICE 2020/2021)
(2022)
