Applications in engineering science最新文献

{"title":"Structural behaviour of reinforced concrete beams containing recycled polyethylene terephthalate and sugarcane bagasse ash","authors":"Chukwuemeka Daniel ,&nbsp;Richard Ocharo Onchiri ,&nbsp;Benard Otieno Omondi","doi":"10.1016/j.apples.2024.100178","DOIUrl":"https://doi.org/10.1016/j.apples.2024.100178","url":null,"abstract":"<div><p>Concrete is a widely used construction product. This product is presently concerned with the depleting nature of natural sand. Concrete is also being considered with supplementary materials to enhance its footprints. Hence, this study's goal is to examine the performance of reinforced concrete (RC) beams consisting of sustainable materials. The study seeks to qualify the use of concrete made using Sugarcane Bagasse Ash (SCBA) and Recycled Polyethylene Terephthalate (RPET) as structural elements. Proportionately, 10 % RPET is used to partially substitute sand, and 5 % SCBA is used to partially substitute cement. The innovation of this study is in the dual substitution approach and structural behaviour examination. The research probes how RPET and SCBA affect the RC beams’ flexural and shear capacities. The tests are completed ensuing 28 days of water curing. Three RC beams are made for each of the conventional concrete and SCBA-RPET concrete. A set of beams is made for the shear capacity test, while another set is made to examine flexural capacity. The beam dimensions are 160 × 200 × 1200mm³. The findings inform that the beams made with 5 % SCBA and 10 % RPET have a flexural capacity of 11 % less than the conventional beams'. However, the SCBA-RPET beams revealed a shear capacity that is 17.38 % more than the conventional beams'. The crack patterns during and after the shear and flexural strength tests are similar and comparable for the SCBA-RPET beams and the conventional beams. Thus, a sustainable concrete mix suitable for use as a structural beam is derived.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"18 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496824000049/pdfft?md5=0c3c2e5e43cc4a2fcb24bf40cfcb5275&pid=1-s2.0-S2666496824000049-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139999281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crushing resistance on the metal-based plate under impact loading: A systematic study on the indenter radius influence in grounding accident","authors":"Aditya Rio Prabowo ,&nbsp;Ridwan Ridwan ,&nbsp;Tuswan Tuswan ,&nbsp;Dharu Feby Smaradhana ,&nbsp;Bo Cao ,&nbsp;Seung Jun Baek","doi":"10.1016/j.apples.2024.100177","DOIUrl":"10.1016/j.apples.2024.100177","url":null,"abstract":"<div><p>The paper presents finite element (FE) simulations of an unstiffened plate specimen punched by a rigid indenter, to study their fracture behaviors and energy dissipation mechanisms. Load-displacement curves from the numerical results are presented for various indenter radii i.e., 35, 50, 65, 80, and 95 mm. Moreover, the outcomes of this investigation should have relevance to estimating grounding scenarios in which the bottom sustains local penetration. The numerical analysis includes the benchmarking study that is based on experimental data to ensure that the current result has satisfactory accuracy. It is concluded that the indenter radii play an important role in the crushing resistance of the plate, especially having a significant influence on the maximum force. Compared with the 35 mm cone radii, the maximum force measured in the tests increased by 110.97 % in the 95 mm indenter radius. Furthermore, the energy absorption produced by the 95 mm cone radius has a higher value at 32.23 kJ compared to 10.1 kJ, which was obtained from a 35 mm cone radius. Discussions on the effects of indenter velocities are also included in this study.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"18 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496824000037/pdfft?md5=d1061d3e96acfb206f54e85ebbf1a2ba&pid=1-s2.0-S2666496824000037-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139873099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on response patterns and influencing factors of buried pipelines with corrosion defects under fault action","authors":"De-long Huang ,&nbsp;Hang Cen ,&nbsp;Hui-yue Wang ,&nbsp;Qiang Liu ,&nbsp;Zhong-ling Zong ,&nbsp;Ai-ping Tang ,&nbsp;Zhuo Tang","doi":"10.1016/j.apples.2024.100176","DOIUrl":"10.1016/j.apples.2024.100176","url":null,"abstract":"<div><p>It is evident how corrosion flaws affect the tension and strain of pipelines that pass oblique-slip faults. The pipeline is very risky and is more likely to experience tensile and buckling damage when corrosion develops in the major deformation region of the pipeline. This will also significantly diminish the pipeline's failure slippage. This research uses a three-dimensional finite element modeling of trans-fault pipes to study the mechanical reaction and influencing factors of corroded pipelines under the action of oblique-slip faults. It is determined that the distribution of stress and strain as well as the pipeline's extension trend are changed when corrosion faults are present. The concentration of tensile and compressive strain along the corroded circular cross-section at the time of damage, followed by a gradual expansion through the entire corroded circumferential cross-section, and the pipeline's extrusion, folding, and bulging, are the manifestations of the influence of corrosion defects on the pipeline at damage. Tensile and compressive strains in the pipeline increase, failure slippage is reduced, and the pipeline experiences tensile damage and corrosion. The length of the pipeline corroded in the circumferential direction, the length of the corroded length in the direction of corrosion along the pipeline axis, and the corrosion depth increase all contribute to these outcomes. The location of corrosion defects has the greatest influence on the dynamics of the pipeline and is most dangerous in the large deformation section from -10 m to 10 m; the corrosion effect is very small when the corrosion is located on the right side of the fracture surface at 25 m. The risk of buckling damage is higher in this scenario, where the corrosion depth has the greatest effect. The conclusions of this paper can be used as a reference for the seismic and corrosion-resistant design of cross-fault pipelines.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"18 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496824000025/pdfft?md5=c94d11744add12ad167a5ef2af57e9c6&pid=1-s2.0-S2666496824000025-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139882052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tribological behavior of firm kaolin against smooth rigid wall during extrusion process","authors":"Viet Hai Hoang ,&nbsp;Christophe Lanos ,&nbsp;Yannick Mélinge","doi":"10.1016/j.apples.2024.100175","DOIUrl":"10.1016/j.apples.2024.100175","url":null,"abstract":"<div><p>One of the main factors influencing the quality of production shape and energy consumption in an extrusion process is the interaction between the material and the wall. To investigate the tribological behavior of extrudable kaolin and a rigid wall, a tribometer is specifically designed and validated for measuring friction at the kaolin-wall interface. Compared to another tribometer in the literature, this device permits the variation of the normal stresses at the wall/material interface during testing. Finally, the tribological behavior of kaolin friction is determined within a range of velocities from 10⁻3 m/s to 5.10⁻² m/s and a range of normal stress from 120 to 250 kPa.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100175"},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496824000013/pdfft?md5=5a65b3175437c5b433088871398b15b0&pid=1-s2.0-S2666496824000013-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139635181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical response of tensegrity-origami solar modules","authors":"Fernando Fraternali ,&nbsp;Julia de Castro Motta ,&nbsp;Giovanni Germano ,&nbsp;Enrico Babilio ,&nbsp;Ada Amendola","doi":"10.1016/j.apples.2023.100174","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100174","url":null,"abstract":"<div><p>This work studies the mechanics of novel origami solar modules with tensegrity architecture for integration in the dynamic solar façades of energy-efficient buildings. The analyzed modules are deployed by adjusting the rest lengths of cables attached to given nodes, so as to form a tensegrity origami. Their stiffness is tuned by adjusting the pretension of the actuation cables, when the deployment motion is locked. The insertion of solar thermal or photovoltaic panels into the rigid elements of the module makes it possible to form positive-energy solar systems. The work studies the kinematics and the mechanics of the investigated structures through analytic and numerical methods. Two folding motions are examined: to open and close the modules and to track sun rays. The rapid prototyping of a physical mock-up permits an experimental validation of the force–displacement response in a given configuration of the sun-tracking motion. A procedure for the computation of the fundamental vibration modes and vibration frequencies of a quadrangular solar module is also given, and the expected response of the system under wind loading is outlined.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496823000493/pdfft?md5=7735d2ac90406ce4b7657041dfac64d9&pid=1-s2.0-S2666496823000493-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of dissipation phenomenon of non-Newtonian nanofluid due to a horizontal stretching rough sheet through a Darcy porous medium","authors":"A.M. Amer ,&nbsp;Nourhan I. Ghoneim ,&nbsp;Ahmed M. Megahed","doi":"10.1016/j.apples.2023.100171","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100171","url":null,"abstract":"<div><p>Recent advancements in thermal engineering have led to the development of stable thermal properties and practical applications for nanofluid flow. Consequently, this study aims to explore the heat and mass transfer characteristics of a non-Newtonian Maxwell nanofluid when it comes into contact with a stretched surface containing porous features that allow for fluid suction velocity. Additionally, the research takes into account how the Soret and Dufour effects impact the processes of heat and mass transfer. A less-explored aspect of research in this field relates to the velocity slip boundary conditions when nanofluids with changing viscosity are involved. Additionally, the model employed in this study illustrates the influence of both viscous dissipation and variable thermal conductivity on the processes of heat and mass transfer. The mathematical flow model is described by nonlinear partial differential equations, which are subsequently transformed into non-dimensional ordinary differential equations. The resulting system is then solved numerically using the shooting method. This study visually examines the impact of physical variables on temperature, flow characteristics, and concentration patterns. Furthermore, it provides graphical representations of estimated values for the skin friction coefficient, Sherwood numbers, and local Nusselt numbers, which are also organized in tables for analysis. In conclusion, by comparing our data with previous results, we confirm the accuracy and reliability of the proposed method. A significant discovery is that the nanofluid velocity decreases as the Maxwell, porous, and slip velocity parameters are increased. Furthermore, the nanofluid concentration rises when the thermophoresis and viscosity parameters increase.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100171"},"PeriodicalIF":0.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496823000468/pdfft?md5=a054088eb58bf874e60dcfb337ca44e0&pid=1-s2.0-S2666496823000468-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138738798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Derivation of a 2D PCCU-AENO method for nonconservative problems","authors":"Ngatcha Ndengna Arno Roland","doi":"10.1016/j.apples.2023.100167","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100167","url":null,"abstract":"<div><p>In this paper, we introduce a methodology to design genuinely two-dimensional (2D) second-order well-balanced path-conservative central-upwind (PCCU) schemes. The scheme studies dam-break with high sediment concentration over abrupt moving topography quickly spatially variable even in the presence of the resonance. This study is possible via a 2D hyperbolic sediment transport model (including arbitrarily sloping sediment beds and associated energy and entropy) in new generalized Shallow Water equations derived with associated energy and entropy in this work. We expose some properties of the model and we establish an existence result of global weak solutions. In addition, we show the convergence of a sequence of solutions of the proposed new model. The second-order accuracy of the PCCU scheme is achieved using a new extension AENO (Averaging Essentially Non-Oscillatory) reconstruction developed in the 2D version of this work. We prove that the derived 2D scheme is well-balanced, positivity-preserving and steady states capturing. Several dam break tests are made to show the ability and the superb performances of the proposed numerical modeling. The proposed method can help to address many engineering problems.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100167"},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496823000420/pdfft?md5=3b6a234bdca2af9c5da22214cc8b5d08&pid=1-s2.0-S2666496823000420-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139653348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A phase field method of crack nucleation investigation for experimental validation by using the improved degradation functions and strain orthogonal decompositions","authors":"Ba-Thanh Vu ,&nbsp;Hung Le-Quang ,&nbsp;Qi-Chang He","doi":"10.1016/j.apples.2023.100173","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100173","url":null,"abstract":"<div><p>In recent decades, the phase field method has been widely used in order to model and simulate the damage in various materials and/ or structures. In this simulation method, the regularization length is an important parameter to describe the width of the smeared crack and reflect the crack as a sharp discontinuity. The regularization parameter depends on the material properties thus its value must be small enough. This leads to the element mesh size being small, in other words, the number of elements increases, causing computation costs to much increase. On the other hand, in brittle materials, the positive and negative parts of the strain tensor represent the tension and compression behaviours in the materials. Two parts of the strain tensor must satisfy strain orthogonal decompositions in the context of the elastic stiffness tensor behaving as a metric. Therefore, in this work, the phase field method is incorporated into the improved degradation functions and strain orthogonal condition in order to investigate the crack nucleation and propagation as well as predict the peak load and/ or the critical stress corresponding to the first crack onset appeared in the experimental brittle material such as plaster. A comparison between the obtained results and results of the available experimental tests and/ or relevant simulation methods will demonstrate that the present proposed method makes the mesh size coarser thus the computational cost is significantly reduced without changing the crack path. Moreover, the present simulation method helps to raise the accuracy of the global and local mechanical responses in the material, which is represented by smoother relationship curves.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496823000481/pdfft?md5=f3de9c23419c0078714f03d33d50dcce&pid=1-s2.0-S2666496823000481-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-scale analysis of corrosion-induced fracture failure mechanisms of high-strength steel wire","authors":"Songling Xue,&nbsp;Teng Su,&nbsp;Xiaoqing Zhao,&nbsp;Zhongling Zong","doi":"10.1016/j.apples.2023.100172","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100172","url":null,"abstract":"<div><p>Currently, research on the mechanical properties of corroded steel wire is primarily conducted through corrosion testing, with a lack of in-depth theoretical investigations into the underlying mechanisms. Addressing this research gap, this study employs molecular dynamics (MD) and finite element theory to explore the corrosion process, micro- and macro-mechanical properties of corroded steel wire, and the fracture mechanisms after corrosion. The study achieves a coupling of micro- and macro-scale analyses. Firstly, a molecular dynamics model is established based on the chemical composition of high-strength steel wire, and a novel mixed potential function derived from quantum mechanics is employed to analyze the fracture mechanisms of corroded steel wire. Secondly, a simplified model of randomly corroded pits in steel wire is developed using Python in Abaqus, based on experimental measurements. Finally, the macroscopic fracture process and fracture strength of corroded steel wire are analyzed based on the results from molecular dynamics simulations. These results are then compared to experimental data to validate the accuracy of the theoretical analysis.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266649682300047X/pdfft?md5=9eb7aad87c96078aad041af16a2716da&pid=1-s2.0-S266649682300047X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138633583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climatic consequences of the process of saturation of radiation absorption in gases","authors":"Jan Kubicki,&nbsp;Krzysztof Kopczyński,&nbsp;Jarosław Młyńczak","doi":"10.1016/j.apples.2023.100170","DOIUrl":"https://doi.org/10.1016/j.apples.2023.100170","url":null,"abstract":"<div><p>This article provides a brief review of research on the impact of anthropogenic increase in atmospheric CO₂ concentration on Earth's climate. A simplified analysis of resonant radiation absorption in gases is conducted. Building upon the material from the cited articles, theoretical and empirical relationships between radiation absorption and the mass of the absorbing material are presented. The concept of saturation mass is introduced. Special attention is given to the phenomenon of thermal radiation absorption saturation in carbon dioxide. By comparing the saturation mass of CO₂ with the quantity of this gas in Earth's atmosphere, and analyzing the results of experiments and measurements, the need for continued and improved experimental work is suggested to ascertain whether additionally emitted carbon dioxide into the atmosphere is indeed a greenhouse gas.</p></div><div><h3>Significance statement</h3><p>• The impact of anthropogenic increase in atmospheric CO2 concentration on Earth's climate is analysed. • The concept of saturation mass is introduced. • By comparing the saturation mass of CO2 with the quantity of this gas in Earth's atmosphere, and analyzing the results of experiments and measurements, the need for continued and improved experimental work is suggested to ascertain whether additionally emitted carbon dioxide into the atmosphere is indeed a greenhouse gas.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"17 ","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496823000456/pdfft?md5=90b3123612c82469e885cb93ff55746c&pid=1-s2.0-S2666496823000456-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}