Article
Engineering, Civil
Renaud Franssen, Serhan Guner, Luc Courard, Boyan I. Mihaylov
Summary: The study proposes a numerical material modeling approach for the nonlinear finite element analysis of UHPFRC to simulate both shear- and flexure-critical members made from strain-softening or -hardening UHPFRC. The approach aims to capture the unique behavior of UHPFRC using a comprehensive set of crack spacing formulations and modeling recommendations. When applied to experimental data, the proposed modeling approach accurately predicts the strength ratios with a low coefficient of variation.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Jia-Qi Zuo, Bo-Li Zhu, Yan-Lin Guo, Chen-Bao Wen, Jing-Zhong Tong
Summary: This paper presents experimental and numerical studies on the shear-carrying capacity and energy-dissipating capability of Steel Corrugated-Plate Coupling Beams (SCPCBs). The results show that SCPCBs have high shear capacities, good ductility, and energy dissipation capability even with thin steel webs. Furthermore, the study investigates the effect of changing the size of the steel corrugated plate and boundary elements on the static and hysterical behaviors of SCPCBs.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Physical
Juraj Hroncek, Pavel Marsalek, David Rybansky, Martin Sotola, Lukas Drahorad, Michal Lesnak, Martin Fusek
Summary: Steel-wire rope is a versatile mechanical component that plays a crucial role in ensuring human safety. Its load-bearing capacity, which describes the static force it can endure before breaking, is an important parameter. Experimental tests are commonly used to determine the load-bearing capacity, but they can be expensive and limited by testing machines. Numerical modeling using the finite element method provides an alternative approach to evaluate the load-bearing capacity. This article focuses on the development of a simplified numerical model that accurately assesses the load-bearing capacity of steel ropes in a shorter time.
Article
Engineering, Civil
Shuangshuang Jin, Qiuyun Wang, Jie Zhou, Jiulin Bai
Summary: This study aims to develop an assembled multi-grid corrugated steel plate shear wall, which has better seismic behavior and energy dissipation capacity based on experimental tests and numerical analysis.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Mechanical
Shengwen Tu, Shota Suzuki, Zhuocheng Yu, Kazuki Shibanuma
Summary: This paper proposes a strategy to efficiently identify the required parameters of ductile fracture models in metallic materials using a hybrid experimental-numerical procedure. The strategy only requires two types of experiments, conventional tensile test and crack growth test, and all the parameters can be determined through numerical optimizations. The experimental results show the feasibility and accuracy of the proposed strategy in parameter identification.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Anna-Maija Arola, Antti Kaijalainen, Vili Kesti, Lars Troive, Jari Larkiola, David Porter
Summary: The bendability of ultrahigh-strength steels is significantly influenced by the mechanical properties of the sheet surface, with steels exhibiting better work-hardening capacity showing improved performance in bending tests, especially when the bend line is aligned perpendicular to the rolling direction.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Multidisciplinary
Kai Zheng, ZhiHua Wang
Summary: A novel numerical simulation method was proposed in this study to accurately describe the dynamic response and failure process of steel structures under explosive loading. Comparison with experimental data confirmed the capability of this method in solving large deformation problems of multi-medium materials and failure problems of complex structures under strong impact loading.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Nanoscience & Nanotechnology
M. Ciemiorek, A. Ambroziak, K. Majchrowicz, M. Lewandowska, J. Golinski
Summary: The paper discusses the formability and ductility of ultrafine grained plates of commercial 5754 aluminium alloy under different strain rates and temperatures. A hybrid process combining multi-turn Equal Channel Angular Pressing and upset forging is proposed for the simple production of UFG sheets with high formability at elevated temperatures. Proper selection of temperature and strain rate can increase the elongations in tensile tests and the formability of UFG sheets.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Civil
Jing Ji, Lingjie He, Liangqin Jiang, Yunfeng Zhang, Yingchun Liu, Yunhao Li, Zhanbin Zhang
Summary: Strain hardening cementitious composites (SHCC) have great application potential due to their good ductility and multiple microcracking behaviors. In this research, a novel composite column called Steel Tube SHCC Flanges and Honeycombed Steel Web (STHSC) is proposed. The finite element model of STHSC is established to study its axial compression behavior. The results show that the steel tube's constraint effect significantly affects the ultimate bearing capacity of STHSC. STHSC exhibits high ductility and initial stiffness, with a shear failure mode and local bulging at the middle section.
ENGINEERING STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Yong Chen, Guang-Ming Liu, Hua-Ying Li, Xiao-Ming Zhang, Hua Ding
Summary: In this study, the microstructure, strain hardening behavior, segregation, and corrosion resistance of a high-Mn TWIP steel joint fabricated by electron beam welding method were investigated. The results showed the formation of columnar dendritic and cellular structures in the fusion zone, with a texture component developed parallel to the X-axis. The joint exhibited comparable yield strength to the base metal, and deformation twinning played a significant role in increasing strain hardening. Element segregation and the formation of cementites decreased the corrosion resistance of the joint.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Robert Uscinowicz
Summary: The study focuses on the tensile and compression tests of Ti/Cu bimetal and copper specimens, aiming to evaluate the hardening process and analyze the deformation and destruction process. The geometric dimensions of the specimens and the slight increase in the thickness of the titanium layer significantly affect the mechanical properties.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Construction & Building Technology
Tuan Trung Le, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Phat Huynh
Summary: The paper presents a numerical analysis and design of rectangular CFDST short columns where the outer tube is made of stainless steel, with a focus on the accuracy of the numerical model in predicting the responses of CFDST columns with stainless steel skin. A parametric study is conducted to investigate the performance of a series of rectangular CFDST columns by varying concrete strength, load distribution, cross-section shape, and tube thickness. The results demonstrate that the Australia/New Zealand Standard provides accurate predictions of the ultimate axial strengths in rectangular CFDST columns with outer stainless-steel tube.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Yongjin Wang, Haonan Yu, Zetian Ma, Rong Mu, Renbo Song, Tom Taylor
Summary: The strain hardening behavior and microstructure evolution of a newly developed Cr-Nb alloyed high manganese steel were investigated in this study. The steel showed a good combination of yield strength and impact toughness after solution treatment. Compression test at room temperature revealed a long continuous strain hardening stage, with the ultimate true stress exceeding 5000 MPa. No significant phase transformation was observed during deformation, and the deformation behavior was dominated by planar dislocation slip, dislocation walls, mechanical twinning, and nano size NbC carbide precipitations. The formation of mechanical twinning and dislocation cell resulted in dynamic grain refinement and contributed to the upward trend of the strain hardening rate. Precipitation strengthening also improved the strain hardening rate.
Article
Materials Science, Multidisciplinary
Jiamin Sun, Thomas Nitschke-Pagel, Klaus Dilger
Summary: The objective of this research is to systematically investigate the impact of strain-hardening models and phase- and temperature-dependent strain-hardening slopes on computed residual stresses in welded joints. The study found that the material plasticity model significantly affects the predicted welding residual stresses. The results also showed that the isotropic hardening model accurately predicts the residual stresses in S235 steel, while the temperature-dependent strain-hardening slopes of the generated phases have minimal impact.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Construction & Building Technology
Bo-Tao Huang, Ji-Xiang Zhu, Ke-Fan Weng, Jun-Qi Huang, Jian-Guo Dai
Summary: This study proposed a utility tunnel reinforced with perforated steel plate using ultra-high performance concrete and engineered cementitious composite. Experimental investigations showed that the crack-control performance of this composite tunnel was superior to traditional concrete tunnels, making it suitable for severe corrosive environments. Finite element analysis provided a comprehensive understanding of the mechanical behaviors of this composite tunnel, offering valuable knowledge for future design and application in underground construction.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Meteorology & Atmospheric Sciences
Carolina B. Gramcianinov, Ricardo de Camargo, Ricardo M. Campos, C. Guedes Soares, Pedro L. da Silva Dias
Summary: This study analyzes the extreme waves in the ocean surface related to extratropical cyclones in the North and South Atlantic Oceans, and finds that they are associated with the cyclone genesis region and storm track orientation. Most extreme wave events occur in the western boundary of the study domains, while the east-poleward side has a higher density of events, which is related to more intense cyclones or cyclones with slower propagation.
Article
Engineering, Marine
M. Tadros, M. Ventura, C. Guedes Soares
Summary: A propeller optimization procedure is developed to reduce fuel consumption by optimizing the parameters such as diameter and pitch, contributing to maritime decarbonization and exhaust emission mitigation.
JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY
(2023)
Article
Engineering, Marine
Bin Liu, C. Guedes Soares
Summary: The paper reviews the developments in ship collision analysis and discusses the challenges faced by the Accidental Limit State (ALS) design method. It highlights the difficulties in finite element analysis, including the material failure criterion, accuracy of analytical formulas, and acceptance criterion in ALS design. While various material failure criteria have been proposed and validated in fine-meshed models, their accuracy in coarse-meshed models is unclear. Analytical calculations can accurately predict plastic responses of ship structures, but fracture predictions still lack a universal approach. The semi-analytical method shows promise in ALS design, but further improvements in accuracy are necessary. The paper summarizes the technical challenges in ship collision analysis for accurately assessing structural damage using numerical and theoretical methods.
Article
Engineering, Marine
Sheng Xu, C. Guedes Soares
Summary: In this study, a series of model tests and numerical simulations are conducted to investigate the dynamic responses of a moored point absorber under irregular wave conditions. The influence of pretension, mooring axial stiffness, current velocity, and tidal range on extreme mooring tension is analyzed using calibrated numerical models. The results show that axial stiffness and current velocity have significant effects on extreme mooring tension.
Article
Engineering, Industrial
Dawei Gao, Yongsheng Zhu, C. Guedes Soares
Summary: A long-sequence multi-step prediction method based on multivariate Gaussian hypothesis and Gaussian process is proposed to model the uncertainty in the future ship path. Through data fusion, the uncertainty of the prediction is reduced, and more accurate support can be achieved for risk assessment. The experimental results demonstrate that the proposed model can combine the advantages of both methods and achieve a more accurate dynamic risk assessment.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Editorial Material
Engineering, Marine
Haitong Xu, Lucia Moreira, C. Guedes Soares
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Utkarsh Bhardwaj, Angelo Palos Teixeira, C. Guedes Soares
Summary: This paper assesses the uncertainty of partial safety factors for designing corroded pipelines against burst failure. 10 calibrated burst pressure prediction models for corroded pipelines are adopted and categorised based on steel classes. Monte Carlo simulation is used to study the probabilistic characteristics of pipe burst strength. Model uncertainty factors are used to correct burst pressure predictions, and model strength factors are derived for each category to provide coherent reliability. The first-order reliability method is employed to estimate partial safety factors and their uncertainty as a function of operational time. The influence of corrosion growth model on the evaluation of partial safety factors is also assessed. The results of this study can provide important guidance for the design and maintenance of pipelines with different steel grades.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Hugo Diaz, C. Guedes Soares
Summary: An approach is developed for planning the logistics and installation aspects of a floating wind farm, considering the complexity of the problem due to specific constraints in transportation and manufacturing. The planning tool is based on the analysis of different logistical solutions and aims to ensure the coherence between logistic methods and project performance. A case study is performed for the CENTEC TLP concept in Spanish and Irish waters, revealing the major aspects affecting design and logistics factors. The tool is applicable for the preliminary design of wind farms worldwide.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Pouria Amouzadrad, Sarat Chandra Mohapatra, Carlos Guedes Soares
Summary: An analytical model of the interaction between a current load and a moored floating flexible structure was developed using the Timoshenko-Mindlin beam theory. Theoretical solutions for displacement, reflection, and transmission coefficients were obtained using the matching technique and orthogonal model coupling relation. The results were compared with calculations and experimental data from literature, and were found to be consistent with a numerical model. This analysis can provide valuable information for marine engineers designing floating flexible platforms in the marine environment.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Zhongchi Liu, Haitong Xu, C. Guedes Soares
Summary: Experiments in a flume investigate the mooring forces and motions of a gravity cage in regular waves. Hollow pipe and net cage models are employed and measurements of mooring forces and cage motions, including surge, heave, and pitch, are taken. There is an increase in mooring force, surge, and heave with the increase in wavelength, but the rate of increase gradually slows down until it stops. Conversely, the pitch increases with decreasing wavelength under short waves. Additionally, the cage's motion does not complete a cycle before the next peak arrives, resulting in reduced mooring forces and motions in all directions. Observing overtopping, it can be concluded that the cage's motion goes through three phases as the wavelength grows. Under short waves, the cage lacks time to complete a motion cycle, leading to overtopping. As the wavelength increases, the cage starts to follow the waves, and overtopping disappears. When the waves are long enough, the cage is pulled into the water by the mooring line, causing overtopping again.
Article
Engineering, Marine
Yu Chan Guo, S. C. Mohapatra, C. Guedes Soares
Summary: A series of experimental model tests were conducted to investigate the performance of a combined membrane breakwater against regular and irregular incident waves. The study analyzed the dependence of various coefficients on breakwater design parameters and wave characteristics. The efficiency of the breakwater was analyzed by comparing different membrane combinations under different wave conditions.
Article
Engineering, Marine
Caglar Karatug, Yasin Arslanoglu, C. Guedes Soares
Summary: A decision support system based on the adaptive neuro-fuzzy inference system (ANFIS) approach is proposed for condition-based maintenance of ship machinery systems. A case study is conducted for a container ship's main diesel engine to predict the main engine power based on exhaust gas outlet temperatures of cylinders and the main engine shaft RPM. Comparative analyses are carried out to select a suitable ANFIS structure and its specific membership functions. The success of the constructed models is evaluated using error metrics, and the overall ANFIS model with 5 membership functions is determined as the best approach.
Article
Engineering, Marine
Dapei Liu, H. Rong, C. Guedes Soares
Summary: This study presents a shipping route modelling approach for maritime traffic identification and monitoring around port areas. The approach involves identifying ship trajectories of different motion patterns, estimating route centrelines and boundaries, and promoting maritime traffic safety and effective supervision.
Article
Engineering, Industrial
Dawei Gao, Kai Huang, Yongsheng Zhu, Linbo Zhu, Ke Yan, Zhijun Ren, C. Guedes Soares
Summary: This paper proposes a semi-supervised fault diagnosis method through feature perturbation and decision fusion. To improve the generalization capability of the model, a dual correlation model is constructed, and the structural parameters are adjusted. The final fusion diagnosis is achieved by analyzing high-confidence samples.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2024)
Article
Engineering, Industrial
Dawei Gao, Yongsheng Zhu, Ke Yan, C. Guedes Soares
Summary: This paper introduces a risk assessment framework based on the predictable Transformer network and clustering method, which addresses the issues of inaccurate indicator calculation and difficulty in training deep learning algorithms in traditional methods. The potential collision risk ships are first clustered using a clustering algorithm, and then the Transformer network is used to predict the possible future positions of ships. Finally, the collision risk for ship pairs and the regional collision risk are evaluated based on the predicted results.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2024)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)