Port Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Analytical Study for the Visual Appearance of Tensile Membrane Structure1104941210.21608/pserj.2019.49412ENAshrafElmokademfaculty of engineering port said university0000-0002-5751-5561AhmedWassefAssistant Professor at Architecture department,
College of Architecture and Design, Effat University.
Assistant Professor at Architectural engineering & urban
planning dept., faculty of engineering Port Said UniversityMohamedElballahDemonstrator at Arab Academy for Science and
Technology port said branchJournal Article20190307In the past, Fri Otto designed Tensile Membrane Structures (TMS) using soap film and large physical models.<br />Nowadays however, complex computational methods are available and can be used to generate an optimal TMS form<br />that can improve the aesthetic aspect of these structures. This research paper presents a comprehensive categorization<br />for TMS gathering all possible present classifications. Besides, the paper discusses the factors that impact and control<br />the design of TMS and identifies the ones that affect the overall visual appearance and perception of TMS structures.<br />The paper also provides a comprehensive analysis of these identified factors to quantify their impact on the final form<br />of the TMS. Three case studies of TMS were analyzed to demonstrate the identified factors and their impact on the<br />TMS. The results revealed that the structure type and material used in TMS are the most affecting factors on the overall<br />image and visual perception of TMS.https://pserj.journals.ekb.eg/article_49412_ed9de5ccd49f2d48ee868a2f1e7893cb.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Regenerative Architecture as a Paradigm for Enhancing the Urban Environment11194955410.21608/pserj.2019.49554ENAhmedFahmyCorresponding author, Demonstrator of Architecture at Faculty of Fine Arts, Helwan UniversityAmalAbdouProfessor of Architecture at Faculty of Fine Arts, Helwan UniversityMahmoudGhoneemAssociate. Professor of Architecture at Faculty of Fine Arts, Helwan University.Journal Article20190104The building and construction industry is considered one of the highest contributor to many issues our world is facing today, especially in a country undergoing a rapid urbanization and industrialization like Egypt, where the higher percentage of buildings are designed and constructed specifically for the circumstances and needs of the moment that don’t consider the environment conditions, ecology or occupants needs and activities.<br />Architecture in general tend to be dealt with as static entities that will stay the same over the decades, while interacting too little with its occupants and its surrounding urban environment, therefrom the human built environment is now considered the largest consumer of the world’s energy resources, freshwater resource, and natural resources.<br />From there, many new architectural design concepts are presented every day in order to change the common conception of the traditional built environment, such as Regenerative Architecture which aims to leave a positive environmental impact on a site instead of creating a project that has as little impact as possible, where more is given to the environment over a building’s lifetime than is taking during its construction and operation.<br />The main objective of this paper is to promote the use of regenerative architecture as a thinking paradigm for sustainable architectural design on a larger scale throughout studying its concept, history, implementation strategies and the fundamental principles that should be considered in the design process. The research methodology consists of a theoretical study about regenerative architecture, it then uses the analytical approach, by studying a certified example that incorporated regenerative architecture principles, to evaluate the efficiency of its regenerative solutions.<br />The study found that regenerative buildings offer an exceptional opportunity to emphasis the value of ecosystem services in an urban context, as it provides such a huge ecosystem services to its surrounding urban environmenthttps://pserj.journals.ekb.eg/article_49554_335eb116380973c3c48edfaa8709b77f.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Constructing Highway Pavements over Soft Clay Soil Improved by Quicklime20254955510.21608/pserj.2019.49555ENMohamedEl GendyProfessor of Geotechnical Engineering and Foundations, Faculty of Engineering, Port Said University, EgyptAhmedMohamadyAssociate Professor of Highway and Airport Engineering, Faculty of Engineering, Zagazig University, EgyptMayShamsCorresponding Author, Assistant Lecturer and Ph.D. Student, Civil Engineering Department, Faculty of Engineering, Suez Canal University, EgyptJournal Article20190410The national network of highways has been monotonically increased over the last few years. The increasing need for infrastructure development has led engineers to find safe techniques to construct the infrastructure on soft soils. The design of highway pavement on soft clay soil still remains a very challenging issue. It often causes problems, such as roadbed instability or excessive settlement. As a result, soft soil roadbed treatment has become more and more important. The study aims at improving the clay soil by different methods to sustain the suitable pavement section and its traffic loads. In this paper, soft clay soil is stabilized with quicklime in order to determine the optimum percent of quicklime, which increases the CBR ratios to acceptable values. Results showed that adding quicklime to soft clay enhances its properties to a great extent. However, a 7% quicklime achieved the optimum enhance n properties at which the modulus of compressibility (Es) is improved by 2.87%, and the CBR by 11.2%. Using cyclic loading model device, the measured settlements under the pavement are 12, 7.21and 3.49 mm for soft clay improved by quicklime, using geotextile and using geotextile with geogrid together, respectivelyhttps://pserj.journals.ekb.eg/article_49555_69627f97c0764e2c69c5aaca8a2e8884.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Effect of the Presence of Soft Clay on the Structural Design of Highway Sections26334955910.21608/pserj.2019.49559ENMohamedEl GendyProfessor of Geotechnical Engineering and Foundations, Faculty of Engineering, Port Said University, Egypt.AhmedMohamadyAssociate Professor of Highway and Airport Engineering, Faculty of Engineering, Zagazig University, Egypt.TNabilLecturer, Mechanical Engineering Department, Faculty of Engineering, Suez Canal University., EgyptMayShamsCorresponding author, Assistant Lecturer and Ph.D. Student, Civil Engineering Department, Faculty of Engineering, Suez Canal University, EgyptJournal Article20190310Construction over soft clay soils have always been a great challenge in the field of geotechnical engineering especially when designing infrastructure. Because of the low shear strength and high compressibility of this soil, many engineering problems such as slope instability, bearing capacity failure and excessive settlement could occur either during or after the construction phase. The design of highway pavements on soft clay soil still remains a very challenging issue, it can cause problems such as roadbed instability or excessive total and differential settlements. The main objective of this research is to study the effect of the presence of the soft clay on the structural design of pavement sections. Results of this study show that the investigated soft clay soil has lower CBR value (0.509%) and modulus of compressibility (Es=129.8 kN/m2), therefore it is not suitable for pavement construction. By using cyclic loading model device manufactured for this study, the settlement under pavement achieved 120.05, 120.32 and 12.28mm for natural soft clay, using geotextile and using geotextile with geogrid together respectively.https://pserj.journals.ekb.eg/article_49559_a8c4e45dc25b8974d0e4a3f89f5c6854.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Analysis of Pounding between Two Adjacent Buildings during an Earthquake34454787710.21608/pserj.2019.13387.1002ENMohamedAbd El-MagedCivil Engineering Department, Faculty of Engineering,Port-Said UniversityAshrafEl-sabbaghCivil Engineering Department,Faculty of Engineering, Port Said UniversityMohamedEl-GhandourFaculty of Engineering, Civil Engineering Department, Port Said UniversityJournal Article20190602The aim of this paper is to study the effect of collisions between the adjacent structures during the earthquake and its effect on the behavior of the structure. The collisions could lead to local damage or even total collapse of colliding structures. <br />A model was performed on the ETABS program to model the pounding between the adjacent structures by using Gap element. The study was applied on a different height and a gap distance between the adjacent structures in order to understand and explain the effect of collision on the behavior of the structure and to clarify the danger of its occurrence. The results of the studied cases in case of pounding were compared with the normal case without pounding, where the Displacement, inter storey drift, impact force and max storey shear force were discussed. These results showed that both buildings were affected by the collision .Therefore, precautions should be taken to prevent the collision by having sufficient distance or design a system that can withstand the force resulting from these shocks.https://pserj.journals.ekb.eg/article_47877_2651a6cd51a391f7f8f0e5af48bd9ee5.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901An Experimental Investigation of Hydrodynamic Journal Bearing with Different Oil Grades46544957610.21608/pserj.2019.49576ENNourMareyArab Academy for Science, Technology and Maritime TransportJournal Article20190225Journal bearings are known to be intrinsic components in different marine applications. They are regarded as the most instrumental means by which large loads could be transmitted at mean speed of rotation. Hydrodynamic journal bearings, based on hydrodynamic lubrication, have undoubtedly proved to be among the most effective types of journal bearings designs, commonly used in marine applications. In hydrodynamic lubrication, metal-to-metal contact could be prevented via a separation between the load carrying surfaces of the bearing, that could be attained by means of a relatively thick film of lubricant. Extending bearing life in marine propulsion systems, auxiliary equipment and diesel engines, reducing friction energy losses and wear, minimizing maintenance expenses and downtime of machinery due to frequent bearing failure are the most important objectives being born in mind on launching the bearing design procedures.<br />In the study at hand, an attempt has been made to perform a study of pressure distribution within hydrodynamic journal bearing on experimental bases. The experimental study has entailed the use of versatile lubrication oils, among of which comprised SEA 20W50, SEA 10W40 and SEA 5W30, for the sake of identifying their individual role in determining the condition of lubrication “hydrodynamic or hydrostatic”. Besides, the study has been extended to cover the pressure behaviour of different lubricants within the hydrodynamic journal bearing, at different speeds ranging from 50 to 400 RPM at constant loads. For accurately testing the 105 mm internal diameter, 58 mm bearing length and “l/d = 0.5” made of white metal, a use has been made of the universal journal bearing test rig “UJBTR”. Pressure distribution is further circumferentially investigated under constant loading, with operating at different journal rotational speeds.https://pserj.journals.ekb.eg/article_49576_d225e8f06c064aacab02ae69b9f44e9e.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901A Proposed Single-Tuned Filter for Harmonic Reduction in Grid-Tied PV Systems55614958310.21608/pserj.2019.49583ENBasmaSamyElectrical Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.AbdelfattahEladlElectrical Department, Faculty of Engineering, Mansoura University, Mansoura, EgyptEbrahimBadranJournal Article20190301The increasing of the Photovoltaic (PV) systems penetration requires study of their effects on the grid's power quality. Therefore, in this paper the grid-tied PV system is studied. This needs an appropriate simulation of the PV system. Therefore, PSCAD/EMTDC is used in this study. The paper starts with investigation of the effect of PV on the harmonic distortion of the system. Finally, a proposed low-cost series connected single tuned-filter is designed for harmonic reduction in grid-tied PV systems. The results confirm the validity of the proposed filter for wide rating of PV systemshttps://pserj.journals.ekb.eg/article_49583_6609ab1230de83fb881472d723838239.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660323220190901Analysis of Integrated Cylinder-Shaped Steel Flywheels in Flywheel Energy Storing Systems62714169510.21608/pserj.2019.14198.1004ENMohammedSaberDepartment of Production Engineering and Mechanical Design, Faculty of Engineering, Port Said University0000-0003-4982-4679Journal Article20190630In this paper, integrated cylinder-shaped flywheels are analysed. Two models of integrated flywheels are considered: the “shaftless” flywheel model and the “fully-integrated” flywheel model. In the former model, no shaft is needed; just an axel around which it rotates, and in the later, the flywheel rim is integrated with a hub and a shaft. The models are subjected to rotational speed 10,000 rpm. Firstly, theoretical analyses were carried out to derive the equations of the hoop and radial stresses in cylinder-shaped flywheels. In addition, relationships were derived, and used, to determine the shape factor K of cylinder-shaped flywheels. The commercial Finite Elements package (Abaqus) was used to model flywheels using axisymmetric elements. It was found that both the shape factor and the energy density (energy stored per kg) of the shaftless” flywheel are higher than that of the “fully-integrated” flywheel. However, the stress-affected zone in the “fully-integrated” flywheel is less than that in the “shaftless” flywheel. Moreover, it was found that in both models of the flywheel, the maximum generated hoop stress does not depend on the flywheel length. It greatly depends on the rotating speed of the flywheel. In addition, it was concluded that, a thin flywheel has more energy density rather than a thick flywheel if both have the same mass. Both models of the flywheel studied here are suitable to be used in fully-integrated flywheel energy storing systems (FESS). However, the “fully-integrated” flywheel is preferred for its simplicity of assemblage and bearing fixationhttps://pserj.journals.ekb.eg/article_41695_b92efb0b599dd32412a6d1aec7edadeb.pdf