Article
Mechanics
Mohammad Alhawamdeh, Omar Alajarmeh, Thiru Aravinthan, Tristan Shelley, Peter Schubel, Ali Mohammad, Xuesen Zeng
Summary: This paper proposes a design tool that combines experimental and numerical methods to investigate the failure modes of hollow PFRP profiles under four-point bending. The validated finite element model was used to thoroughly study the failure sequence and conduct a comprehensive parametric study on design parameters.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Mohammad Alhawamdeh, Omar Alajarmeh, Thiru Aravinthan, Tristan Shelley, Peter Schubel, Michael Kemp, Xuesen Zeng
Summary: This paper presents a numerical study on the local buckling and compressive failure of hollow PFRP profiles under axial compression, using the Newton method and adaptive stabilisation scheme in Abaqus 2019. The numerical predictions were validated by experiments. The energy parameters and constituent failure modes were used to explain the effects of dimension, layup, and slenderness ratio on the post-peak behavior and failure modes of the PFRP profiles.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Ben Mou, Yang Zhou, Qiyun Qiao, Jiming Liu
Summary: This study investigated the mechanical behavior of bolted built-up steel columns and found that slenderness ratio and angle section side length were the main factors affecting bearing capacity. The Japanese code provided the best predictions for the ultimate load of bolted built-up steel columns.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Mechanics
Peng Feng, Zhiyuan Li, Jie Wang, TianQiao Liu
Summary: A novel joint inspired by ancient timber structures was proposed for pultruded FRP beams and concrete-filled FRP columns, providing a feasible solution for FRP frame structures. Experimental and analytical studies were conducted to assess the structural behavior and develop a design method for the joint. The joint, composed of FRP composites and concrete, exhibited excellent corrosion resistance.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Sizhe Wang, Qingtian Su, Xu Jiang, Elyas Ghafoori
Summary: This study investigates the stability of steel columns strengthened using bolted components under a preload. An analytical model is proposed to consider the effects of the preload and bolting, and a prediction formula for the ultimate load capacity is obtained. The formula is validated to provide accurate predictions with a mean absolute percentage error of approximately 10% when compared with existing numerical and experimental results.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Qiyun Qiao, Jiafeng Li, Ben Mou
Summary: This study investigates the mechanical properties of a bolted built-up H-section column made of high-strength steel. By conducting tests and calculations, the failure modes, load-deformation behavior, strength and stiffness of the column are studied. The results show that the slenderness ratio and bolt pitch have significant effects on the ultimate strength and axial stiffness.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Omar Alajarmeh, Xuesen Zeng, Thiru Aravinthan, Tristan Shelley, Mohammad Alhawamdeh, Ali Mohammed, Lachlan Nicol, Alexander Vedernikov, Alexander Safonov, Peter Schubel
Summary: Research on the compressive behavior of Pultruded Fibre Reinforced Polymer (PFRP) profiles reveals that continuous-wound fibers help prevent splitting failure and result in better structural performance in rectangular profiles compared to square profiles. Increasing the Length-to-Depth (L/D) ratio improves displacement buckling capacity but reduces stiffness and strength.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Mario F. Sa, Joao Pacheco, Joao R. Correia, Nuno Silvestre, John D. Sorensen
Summary: This paper proposes a resistance format and partial factors for the global buckling of FRP profiles based on reliability analysis and partial factor calibration. By defining probability distributions for model uncertainties and comparing with experimental data, the proposed resistance models are shown to provide accurate estimates of critical buckling stress.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Gerhard Olivier, Fruzsina Csillag, Angeliki Christoforidou, Liesbeth Tromp, Martijn Veltkamp, Marko Pavlovic
Summary: Due to the low weight and excellent durability of composite materials, FRP decks mounted on steel superstructures are becoming increasingly common. Bolted joints are generally used to facilitate connections, but little is known about the fatigue and creep behavior of such joints. The objective of this research is to investigate connectors' feasibility through static, fatigue, and creep experiments on different types of bolted joints. The study focuses on application in vacuum-infused GFRP panels with integrated webs connected to steel bridge superstructures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
David Martins, Jose Gonilha, Joao R. Correia, Nuno Silvestre
Summary: The study investigates the mechanical behavior of exterior beam-to-column connections using stainless steel cleats to develop a connection system with non-corrodible auxiliary parts and improved ductility. Through full-scale tests, it was found that reinforced connections with 6mm thick flange cleats and two bolt rows showed the best overall mechanical behavior, balancing stiffness and deformation capacity to delay GFRP local failure and mobilize stainless steel ductility. The experimental study was complemented by predictions of stiffness and strength using analytical and numerical methods.
THIN-WALLED STRUCTURES
(2021)
Article
Construction & Building Technology
Mandana Abbasi, Kim J. R. Rasmussen, Mani Khezri, Benjamin W. Schafer
Summary: This paper presents an experimental program on the local and/or distortional buckling of built-up cold-formed steel sections subjected to pure compression. The influence of key parameters, including buckling mode, cross-section geometry, and fastener spacing, on the ultimate sectional capacity of built-up columns is studied. The experimental results showed that the ultimate capacity in built-up columns with distortional buckling mode increased significantly with the reduction of screw spacing, whereas the increase was minor for specimens that failed through local-distortional interaction. The findings also indicated that the Direct Strength Method provided predictions of the ultimate strength with varying levels of accuracy.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Liurui Sang, Tianhua Zhou, Lei Zhang, Teng Zhang, Shuaibing Wang
Summary: A series of axial compression tests were conducted on cold-formed steel built-up I-section columns with lipped channel sections connected by self-drilling screws. The study investigated the buckling behavior, failure mode, and ultimate bearing capacity of these columns. A nonlinear finite element model was established and validated. An estimation method for the local buckling bearing capacity was proposed, based on the local buckling critical stress calculation formula and local buckling bearing capacity curve. Simplified calculation formulas for local buckling critical stress were given for different geometric parameter ranges. The method was compared with experimental and finite element results.
Article
Engineering, Civil
Feiliang Wang, Yan Han, Jian Yang
Summary: This study used a computer-based finite element approach to investigate the stiffness and resistance behavior of beam-column moment joints in portal frames constructed by cold-formed steel back-to-back channel sections. The numerical simulation method was validated against experimental outcomes, and a modified equation was proposed to predict the initial flexibility of the joints. Parametric studies revealed the effects of sheet width-to-thickness ratio, bolt-to-bolt hole tolerance, and overlap length on connection flexibility.
Article
Engineering, Civil
Rohola Rahnavard, Helder D. Craveiro, Marco Lopes, Rui A. Simoes, Luis Laim, Carlos Rebelo
Summary: This paper investigates the axial behavior of a new composite column through experimental and computational methods. The study evaluates different configurations of CF-CFS columns and examines the buckling behavior of steel components and the mitigation of local buckling caused by concrete support. Numerical simulations are performed and compared with experimental results, and the effectiveness of current design codes is assessed. The study also includes a reliability analysis and proposes a more reliable design methodology.
THIN-WALLED STRUCTURES
(2022)
Article
Mechanics
T. T. Nguyen, Sivaganesh Selvaraj, T. -M. Chan, J. T. Mottram
Summary: This paper presents the lateral-torsional buckling resistances of pultruded fibre reinforced polymer I-beams through computational analyses and sensitivity studies. Geometric and material imperfections are incorporated into the numerical simulations and the results are verified by physical tests. The study finds that combined imperfections can significantly influence the buckling resistance and load eccentricity results in complex structural response. Reliably quantifying the influence of combined imperfections is important for designing pultruded I-beam members.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
G. Boscato, S. Ientile
COMPOSITE STRUCTURES
(2018)
Article
Engineering, Multidisciplinary
Giosue Boscato, Emanuele Reccia, Antonella Cecchi
COMPOSITES PART B-ENGINEERING
(2018)
Article
Mechanics
Jungtae Noh, Behzad Ghadimi, Salvatore Russo, Michele Rosano
COMPOSITE STRUCTURES
(2018)
Article
Acoustics
G. Boscato, E. Reccia, D. Baraldi, A. Cecchi
SHOCK AND VIBRATION
(2018)
Editorial Material
Acoustics
Giosue Boscato, Luca Zanotti Fragonara, Antonella Cecchi, Emanuele Reccia, Daniele Baraldi
SHOCK AND VIBRATION
(2019)
Article
Mechanics
S. Castellaro, S. Russo
COMPOSITE STRUCTURES
(2019)
Article
Mechanics
S. Russo
COMPOSITE STRUCTURES
(2019)
Article
Construction & Building Technology
Salvatore Russo, Eleonora Spoldi
STRUCTURAL CONTROL & HEALTH MONITORING
(2020)
Article
Construction & Building Technology
Claudia Brito de Carvalho Bello, Giosue Boscato, Emilio Meroi, Antonella Cecchi
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Engineering, Mechanical
G. Boscato, A. Cecchi
ENGINEERING FAILURE ANALYSIS
(2020)
Article
Construction & Building Technology
Giosue Boscato, Marco Civera, Luca Zanotti Fragonara
Summary: The paper proposes a methodology for detecting and localizing damages in composite pultruded members, particularly focusing on thin-walled pultruded members. The method is applied to numerical and experimental data, analyzing both modal shapes and the influence of damage on the performance of Glass Fiber Reinforced Polymer (GFRP) members. The reliability of the proposed semiparametric statistical method is demonstrated through numerical investigation and comparison with experimental results on cracked beams and frame structures.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Proceedings Paper
Engineering, Civil
Xiaojun Wei, Giosue Boscato, Justin Russell, Alessandro Adilardi, Salvatore Russo, Stana Zivanovic
DYNAMICS OF CIVIL STRUCTURES, VOL 2
(2019)
Article
Construction & Building Technology
Salvatore Russo, Giosue Boscato, Eleonora Spoldi
INTERNATIONAL JOURNAL OF MASONRY RESEARCH AND INNOVATION
(2018)
Article
Construction & Building Technology
G. Boscato, T. Dalla Mora, F. Peron, S. Russo, P. Romagnoni
JOURNAL OF BUILDING ENGINEERING
(2018)
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)