Advanced Engineering Forum最新文献_第6页

Numerical Analysis of Steel Elevator Car Frame: Sensitivity to Element Connections 钢电梯轿厢框架的数值分析:对单元连接的敏感性

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-a5mfn4

C. B. de Carvalho Bello, Daniele Baraldi, G. Boscato, A. Cecchi, Carlo Rebucci, D. Trabucco

引用次数: 0

Harvesting Electrical Energy from Automatic Sliding Doors Use 从自动滑动门的使用中获取电能

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-4nbx4r

Muhammad Ilham bin Khalit, Roger Ashley Hurtis, B. Khidhir, H. Anuar

{"title":"Harvesting Electrical Energy from Automatic Sliding Doors Use","authors":"Muhammad Ilham bin Khalit, Roger Ashley Hurtis, B. Khidhir, H. Anuar","doi":"10.4028/p-4nbx4r","DOIUrl":"https://doi.org/10.4028/p-4nbx4r","url":null,"abstract":"This paper reflects the energy that can be harvested from the automatic sliding doors. Previously, swinging doors and revolving doors were used to harvest the energy. But due to difficulties to attain maximum range of motion through the swinging doors which is can open up to 900 and because of revolving doors take up a lot of spaces and it is not ideal to be located in small building, thus the use of automatic sliding doors was suggest for this research. The aims of this research are to analyze the output produced from the new system and compare it with the existing systems that use swinging and revolving doors. The kinetic energy which attained form the motion of sliding doors then was converted to ambient energy which can be later converted to electrical energy. The system used Piezoelectric generators to generate energy from the motion of sliding doors. There are 3 systems with different wheel diameter and number of piezoelectric modules placed within the tires of the wheel. The energy was produced by the deformation in the body of the tires caused by the load applied on the wheels. ANSYS’s software was used to simulate the stress acting on the wheel. It was found out the door produces 60.41 J and 80.52 W of energy and power assuming that the door is used for 120 minutes every day. It was concluded that the energy lost from the motion of sliding doors can be harvested and the system doesn’t take up much space as compared to revolving doors’ system.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"72 1","pages":"29 - 41"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73504339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic Characteristics of a 5-kN Thrust Gas Turbine Front Bearing Composed of a Vibration Absorber Element and Deep Groove Ball Bearing 由吸振元件和深沟球轴承组成的5kn推力燃气轮机前轴承动态特性

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-7916wb

Bertolino Junio dos Santos, Damásio Sacrini, A. V. Rodrigues, Geraldo Creci, J. C. Menezes

{"title":"Dynamic Characteristics of a 5-kN Thrust Gas Turbine Front Bearing Composed of a Vibration Absorber Element and Deep Groove Ball Bearing","authors":"Bertolino Junio dos Santos, Damásio Sacrini, A. V. Rodrigues, Geraldo Creci, J. C. Menezes","doi":"10.4028/p-7916wb","DOIUrl":"https://doi.org/10.4028/p-7916wb","url":null,"abstract":"Rolling bearings enable the development of high rotational speeds with a good load-bearing capacity and low frictional resistance. Therefore, rolling bearings can be used on a wide variety of rotating machines. This study investigated the dynamic stiffness and damping coefficients of the front bearing of a 5-kN thrust gas turbine. A Barden® 206(T) deep-groove ball bearing was the main part of the front bearing. Computational models were developed using MATLAB® for both the structural dynamics problem governed by Hertzian contact theory and the lubricated problem governed by elastohydrodynamic theory. In addition, the front bearing was composed of a vibration absorber element, which was also considered. Finite element analysis was performed on both the ball bearing and the vibration-absorbing element to assist in its final characterization. As the main results, the stiffness and damping dynamic coefficients of the front bearing were estimated and can be used to predict the rotordynamic behavior of the aeronautical gas turbine rotating set to avoid possible vibration problems during operation.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"106 1","pages":"43 - 53"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87979397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the Addition of Aggregates Derived from Used Tires on the Mechanical Behavior of Clay 掺加废旧轮胎骨料对粘土力学性能的影响

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-cazy62

Faroudia Meziani, Kahil Amar, Yamoun Mourad

{"title":"Effect of the Addition of Aggregates Derived from Used Tires on the Mechanical Behavior of Clay","authors":"Faroudia Meziani, Kahil Amar, Yamoun Mourad","doi":"10.4028/p-cazy62","DOIUrl":"https://doi.org/10.4028/p-cazy62","url":null,"abstract":"The study of the shear strength parameters of mixtures comprising tire-derived aggregates (TDA) and clay was the main objective of this experimental work. The tests were performed using the direct shear box. First, the test was performed on specimens comprising only clay in its natural state and then on mixtures consisting of clay and TDA in increasing contents. A total of four samples (natural clay and natural clay with 2, 4, and 6% tire-derived aggregates)) were made and tested at three normal stress levels (100, 200, and 300 kPa). Then, Mohr-Coulomb failure envelopes were drawn to determine the internal friction angle and cohesion for all mixes. The results were compared to find the optimum TDA content and to study the stress-strain behavior of the mixtures. It was observed that mixing TDA up to 6% by weight with clay significantly changes the shear strength, and the internal friction angle increases from 27.47 to 59.39º (an increase of 46.25%). However, the cohesion significantly decreases from 45 to 26 kPa (a decrease of 57.77%). On the other hand, it was observed that increasing the TDA content reduces the density and increases the shear strength of the mixtures. Also, the addition of TDA increases the mixture consolidation and deformation level at failure.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"56 1","pages":"57 - 67"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85020726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Conductivity of the Oceans. Analysis Based on the Seismic Energy Theory 海洋的导电性。基于地震能量理论的分析

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-l2f336

Claudio Valverde Ramírez, Yulisa Valverde Romero, Milton Valverde Romero

引用次数: 0

Probabilistics Design and Analysis of Metal Interference Fits 金属过盈配合的概率设计与分析

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-904z3i

N. H. Loc, Lam Vi Phong

引用次数: 0

Simulation-Optimization Modeling Techniques for Groundwater Management and Sustainability: A Critical Review 地下水管理和可持续性的模拟-优化建模技术:综述

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-50l1j1

Ahmed M. Saqr, Mona G. Ibrahim, M. Fujii, M. Nasr

{"title":"Simulation-Optimization Modeling Techniques for Groundwater Management and Sustainability: A Critical Review","authors":"Ahmed M. Saqr, Mona G. Ibrahim, M. Fujii, M. Nasr","doi":"10.4028/p-50l1j1","DOIUrl":"https://doi.org/10.4028/p-50l1j1","url":null,"abstract":"Recently, groundwater resources have been subjected to negative impacts from various natural and anthropogenic factors worldwide. Hence, great efforts have been conducted in the literature to find the best management strategies for protection against groundwater quantity shortage and aquifer material contamination. Simulation-optimization (S-O) modeling has been considered one of the most feasible options for groundwater management, providing high accuracy in understanding the complex real-world water issues. This review study aims at clarifying the concepts, techniques, and stepwise methodologies of both simulation models and optimization algorithms, in addition to the applications of the integrated S-O approach in solving groundwater problems. Besides, the linkages between applications of the S-O framework and sustainable development goals (SDGs) from quantity and quality perspectives are illustrated to show the expected beneficial outcomes for various socio-economic and environmental issues in different fields. Based on this review, conclusions are drawn that may be useful for future studies related to groundwater conservation, management, and planning.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"49 1","pages":"89 - 100"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86278908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Applications of Flash Flood Hazard Assessment Techniques: Case Studies from Egypt and Saudi Arabia 山洪灾害评估技术的最新应用:埃及和沙特阿拉伯的案例研究

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-03z404

Mahmoud M Mansour, Mona G. Ibrahim, M. Fujii, M. Nasr

{"title":"Recent Applications of Flash Flood Hazard Assessment Techniques: Case Studies from Egypt and Saudi Arabia","authors":"Mahmoud M Mansour, Mona G. Ibrahim, M. Fujii, M. Nasr","doi":"10.4028/p-03z404","DOIUrl":"https://doi.org/10.4028/p-03z404","url":null,"abstract":"Flash floods are severe natural disasters due to their suddenness, frequency, and destruction. Every year, flash floods occur in Egypt and Saudi Arabia, which are located in the heart of the Middle East. Extensive areas in Egypt and Saudi Arabia are covered by mountainous topography. Intense rainfall can generate flash floods with their magnitude dependent on geomorphology and storm characteristics. Flash flood hazard assessment is a feasible way to mitigate potential damage and losses. Illumination, review, and comparison of assessment techniques of flash flood hazards represent an urgent necessity to evaluate advances and challenges in this discipline. Google-scholar and Scopus were used to collect 50 recent scientific papers, most of them published between 2011 and 2021, using the keywords: floods, hazards, assessment, Egypt, Saudi Arabia. Remote Sensing (RS) and Geographic Information systems (GIS) are the cornerstones of these studies, which include the Digital Elevation Model (DEM) and geoprocessing tools. The two items facilitate the calculation of morphometric parameters. Dividing the area and determining the hazard level were the main steps in flash flood hazard assessment. The considered studies relied on varied sets of morphometric parameters that ranged from 3 to 24 morphometric parameters. Area, ruggedness ratio, basin shape index, stream frequency, slope index, and drainage density are the common parameters in the assessment of flash flood hazards. In a flood zone, buildings made from brick have better sustainability in terms of both global warming mitigation and life cycle cost than other materials. Future studies are essential to illustrate the relationships between different morphometric parameters and flash flood hazard degree through field data and define a reliable unified set of morphometric parameters to assess the flash flood hazard degree.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"56 1","pages":"101 - 110"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89972168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of Long-Term Aging on the Behavior of Batu Pahat Soft Clay-Modified Asphalt Mixture 长期老化对巴图巴哈软土改性沥青混合料性能的影响

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-i389f2

A. Musbah, Ahmed Suliman B. Ali, Ali Mohamed Albeddal, Musbah Guma Musbah, H. Ali

{"title":"Effect of Long-Term Aging on the Behavior of Batu Pahat Soft Clay-Modified Asphalt Mixture","authors":"A. Musbah, Ahmed Suliman B. Ali, Ali Mohamed Albeddal, Musbah Guma Musbah, H. Ali","doi":"10.4028/p-i389f2","DOIUrl":"https://doi.org/10.4028/p-i389f2","url":null,"abstract":"Aging in the field is significantly influenced by the initial voids in the asphalt mixture, the intensification of the asphalt mixture under traffic, and the amount of heat applied to the mixture during production. Hence, this research is used to evaluate the effect of long-term aging on the behavior of soft clay-modified asphalt mixture. This study aims to evaluate the usage of soft clay powder, as a newly introduced material in asphalt mixture. Indirect tensile strength, indirect resilient modulus, and dynamic creep tests were conducted to determine and evaluate the performance of samples mixed using the Superpave system. The results obtained were perceived to be successful. As for the indirect tensile strength, the addition of batu pahat soft clay contributes to increasing the indirect tensile strength, especially when it was observed by using 4%, which gave better results than other soft clay percentages. In the resilient modulus test, Batu Pahat soft clay particles improved the fatigue and rutting resistance by 10.04%. While; in the dynamic creep test, the 4% soft clay value gave the best performance of evaluation works when it was conducted in a long-term aging process with the value of 0.14mm. More importantly, the evaluation of aging conditions noted that soft clay could resist and delay aging, promoting pavement durability. Also, this study was conducted to determine the most suitable and optimum patu pahat soft clay particles in the asphalt mixture and expectant to produce a new road material and to contribute toward producing cheap and effective asphalt mixtures for road construction","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"30 1","pages":"69 - 78"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87356477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Nanofluid on Natural Convection in an Isosceles Rectangular Container with a Heat Source 纳米流体对带热源等腰矩形容器内自然对流的影响

Advanced Engineering Forum Pub Date : 2022-08-31 DOI: 10.4028/p-1qn8cf

Bouras Abdelkrim, Djedid Taloub, Amina Amroune, Z. Driss

{"title":"The Impact of Nanofluid on Natural Convection in an Isosceles Rectangular Container with a Heat Source","authors":"Bouras Abdelkrim, Djedid Taloub, Amina Amroune, Z. Driss","doi":"10.4028/p-1qn8cf","DOIUrl":"https://doi.org/10.4028/p-1qn8cf","url":null,"abstract":"The development of modern technology in microelectronics and power engineering requires the creation of efficient cooling systems. This is made possible by the use of special fin technology inside the cavity or special heat transfer Ethylene glycol-copper nanofluids to intensify the heat removal from the heat-generating elements. A numerical study of the natural convection of stationary laminar heat transfers in a closed rectangular cavity with a local source of internal volumetric heat generation. For different Rayleigh numbers and different volume fractions of nanoparticles. The system of equations governing the problem was solved numerically by the fluent computer code based on the method of finite volumes. Based on the Boussinesq approximation. Interior and exterior surfaces are maintained at a constant temperature. The study is carried out for Rayleigh numbers ranging from 104 to 106. The effects of different Rayleigh numbers and volume fractions of nanoparticles on natural convection have been studied. The results are presented as isotherms, isocurrents, and local and mean Nusselt numbers. The aim of this study is to see the influence of the thermal Rayleigh number and the volume fraction of the nanoparticles on the rate of heat transfer.","PeriodicalId":7184,"journal":{"name":"Advanced Engineering Forum","volume":"3 1","pages":"19 - 28"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89539700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1