Engines work
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The present work deal with the propagation of a horizontally polarised shear (SH) wave in an infinitely long cylindrical structure comprised of three concentric isotropic layered media. The model has been formulated in cylindrical co-ordinates and an analytical approach is employed to achieve the closed form of the dispersion equation.
3p vibecca 01-10-2024 1 1 Download
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This work aims to study the crack pattern in masonry-like structures by a simplified description of the medium using a variational damage model. In literature, when modeling fractures in masonry structures, capturing both fracture types, cracks in units, and cracks at the interface simultaneously, usually requires a complicated scheme.
12p viyoko 01-10-2024 1 1 Download
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The research "Solving constrained optimization tasks in civil engineering using εDifferential Evolution developed with Visual C#. NET" work aims at constructing an evolutionary algorithm based approach for solving complex constrained optimization tasks. The -Differential Evolution ( -DE) proposed by Takahama, et al. [1], is selected as the employed evolutionary approach. The -DE has been proven to be capable optimizer for tackling sophisticated problems in various engineering field. In this study, this optimization method is developed in Visual C#.
5p xuanphongdacy09 29-09-2024 1 1 Download
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This paper is an extension of our recent work that presents a two-scale design method of porosity-like materials using adaptive geometric components. The adaptive geometric components consist of two classes of geometric components: one describes the overall structure at the macrostructure and the other describes the structure of the material at the microstructures.
9p vifilm 24-09-2024 3 1 Download
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The main objectives of this research work are as follows: (i) to explore the sensitivity of macro, meso and micro fibers to tensile and compressive properties of SFCs, and (ii) to correlate the tensile strength to compressive strength of SFCs containing macro, meso and micro steel-smooth fibers.
12p vifilm 24-09-2024 3 1 Download
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We present a generalized three-variable high order shear deformation theory (THSDT) using isogeometric analysis (IGA) to analyze free vibration of functionally graded porous (FGP) plates reinforced by graphene platelets (GPLs) in this work. It is named as FGP-GPLs for a short. The proposed theory only has got three degrees of freedom (DOFs) per node as the same way of numerically solutions in three-dimensional (3D) solids.
16p vifilm 24-09-2024 2 2 Download
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This research also demonstrates the effectiveness of DHACA compared with the previous studies such as Multi-objectives Genetic Algorithm (MOGA), Simulated Annealing Algorithm based Multi-objectives Genetic Algorithm (SAbased MOGA) on the CSLP. DHACA supports the construction site dynamic planning with constraints on facilities to improve work efficiency.
11p vifilm 24-09-2024 2 1 Download
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This work aims to study the vibration characteristics of the rotating functionally graded porous beam reinforced by graphene platelets. The beam is mounted and rotated around a hub with a constant velocity. The present method results are also compared with numerical results available in the literature.
13p vifilm 24-09-2024 6 1 Download
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The ultimate aim of this study is to use experimental work for evaluating the modulus of elasticity (MOE) of Geopolymer concrete (GPC) using marine sand as fine aggregate and seawater for the mix. Four different groups of concrete mixtures, namely CP1a, CP1b, CP2a, CP2b were identified.
9p vifilm 24-09-2024 2 1 Download
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This paper presents the initial assumptions about determining the load from the above structural collapse which aims to secure the basements in the event of structural collapse due to the risk of wars and terrorism.
7p viyoko 24-09-2024 3 1 Download
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Strong urbanization and enormous pressures of urban living and livelihoods have led to different development trends. A portion of urban residents choose to settle in the periphery to enjoy more quality living standard while suffering more mobility cost for work. The paper analyzes the characteristics, causes and solutions of gentrification in Hanoi historic inner under the local urban development context.
13p viyoko 24-09-2024 1 1 Download
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The hydraulic rock splitter with a wedge-type splitting head has various advantages, such as simple operation, high work efficiency, safety, shortened work time, and minimal environmental impact. This paper introduces the general structure of the rock splitter machine and the hydraulic cylinder-driven splitting head, along with the method for selecting suitable parameters.
13p vifaye 20-09-2024 2 1 Download
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This study constructed two predictive models using artificial neural networks to forecast the compressive strength based on input parameters including data on fly ash, silica fume and temperature (1); to predict the contents of fly ash and silica fume based on input parameters of compressive strength and working temperature (2).
16p vifaye 20-09-2024 1 1 Download
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This study seeks to propose a method to automatically assess unsafe postures of lifting and carrying heavy objects by combining the RTMPose deep learning model to detect people from videos and a convolutional neural network (CNN) model to automatically extract, evaluate and classify the worker’s posture skeleton frames into two states “safe posture” and “unsafe posture”.
12p vifaye 20-09-2024 3 1 Download
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This work aims at investigating the effect of aleatoric uncertainty of creep rock properties on the stability of an underground structure. This uncertainty relates to the spatial variability of the mechanical parameters representing the time-dependent behavior of geological rock formation due to the change in its mineralogy.
13p vifaye 20-09-2024 3 1 Download
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This study proposes an alternative approach based on the deep learning paradigm working in a complementary way with conventional methods such as the finite element method for quickly forecasting the responses of structures under random wind loads with reasonable accuracy.
11p vifaye 20-09-2024 2 1 Download
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A damage diagnosis method for trusses based on incomplete free vibration properties utilizing ensemble learning, e.g. Extreme gradient boosting (XGBoost), is presented in this work. Owing to the lack of measurement sensors, modal features are only measured at master degrees of freedom (DOFs) of a few first models instead of all DOFs of a structural system.
12p vifaye 20-09-2024 1 1 Download
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The implementation duration of road work is critical as it impacts both the cost and outcome of the project. The article examines the techniques used to determine the time required for the completion of road work projects. It explores the approach to estimating the duration of road work projects in low- and middle-income countries (LMICs) based on the ROCKS database created by the World Bank.
13p vifaye 20-09-2024 3 1 Download
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In this study, the effect of pre-tensioned rope tensions on ladder structure is investigated and evaluated according to current standards. The work includes modeling the ladder structure, defining loads, combining loads, investigating stresses and displacements according to the tension values.
14p vifaye 20-09-2024 1 1 Download
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The present work is to evaluate the performance of the RANS turbulence models for simulating regular wave propagation over a submerged breakwater using the open-source Computational Fluid Dynamics (CFD) software OpenFOAM.
15p vifaye 20-09-2024 6 2 Download