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69 articles for “stiffness”
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Research ArticleOpen accessIn the abstractNumerical Study on Coupling Beam Retrofitted Using CFRP and GFRP SheetsSaeideh Hakimi, Rahmat MadandoustOne of the most useful way to resist against earthquake is using coupling beam of steel shear walls. The steel shear wall’s behavior depends on several factors such as stiffness, ductility, strength and so on. But, it has the shear cracks in coupling beam. In this paper, the effect of Carbon Reinforced Fiber Polymer (CFRP) on coupling beams has been … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 3 · 6 Aug 2018 · 7,730 accessesView PDFCite
Research ArticleOpen accessIn the abstractModeling of Reinforced Concrete Frames with Infill Walls Under Cyclic Loading Strengthening with CFRPMojtaba Fallahi, Sajjad Sayyar Roudsari, Mona Haghighifar, Rahmat MadandoostNowadays, using infill isolators in Reinforced Concrete (RC) structures is very common. In earlier research this infill isolators are usually considered as non-structural elements, but in recent researches it was demonstrated that infill has considerable effects on natural period, stiffness, strength and overall behavior of structure specially when it is subjected to seismic ground motions. In this study a one-bay … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 3 · 6 Jul 2018 · 8,449 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalytical Study of Bending Behavior for Concrete Beams with T-Shaped Cross Section using Composite and Steel BarsSeyedeh Zahra Hosseini Ghaziyani, Seyedamin Mostafavian, Meysam Azizpour ChiraniTodays, instead of steel reinforcements, Fiber Reinforced Polymer (FRP) rebars have been using in the reinforced concrete structures. By consideration of different strain-stress behavior between steel and composite material, it is necessary to evaluate the difference of these two materials inside of RC beams. In this research, twelve reinforced concrete T-shape beams were modeled using ABAQUS finite element software. Six … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 2 Jun 2018 · 8,547 accessesView PDFCite
Research ArticleOpen accessIn the abstractUncertainty Assessment for the Buckling Analysis of Glass Columns with Random ParametersMohammad Momeni, Chiara BedonLoad-bearing elements composed of glass, as known, are often susceptible to buckling collapse mechanisms. This intrinsic characteristic (and thus potential limitation for design) typically derives from the use of relatively small thicknesses to cover large spans and surfaces, thus resulting in a multitude of columns, beams, or plates that are characterized by high slenderness. In the literature, accordingly, several and … …International Journal of Structural Glass and Advanced Materials Research, Vol. 4, Issue 1 · 22 Dec 2020 · 6,303 accessesView PDFCite
Research ArticleOpen accessIn the abstractStrengthening of Laminated Glass Windows against Windborne Debris ImpactXihong Zhang, Qingfei Meng, Chiara Bedon, Piotr W. SielickiThis paper presents numerical modelling to study potential mitigation methods to improve the impact resistance performance of laminated glass windows against timber windborne debris impact. A detailed numerical model of laminated glass window is generated and validated with laboratory impact tests. The influence of supporting frames made of different stiffness materials is examined. Numerical simulation shows that boundary condition has … …International Journal of Structural Glass and Advanced Materials Research, Vol. 4, Issue 1 · 16 Nov 2020 · 6,888 accessesView PDFCite
Review ArticleOpen accessIn the abstractA Strategic Study on the Environmental Impacts of Wind Turbine Blade Materials, their Improvements, Economics and End-Life-OptionsOjshwi Prakash, Godwin Glivin, N. Kalaiselvan, V. MariappanWind energy is a great alternative to solar energy (During monsoon) along with conventional non-renewable energy sources and has a potential market growing exponentially. Modern 3 Blade HAWTs are most dominant in the market and have high efficiency. Blades are 15 to 20% of the cost of the wind turbine unit and also exposed to the environment. Therefore it is … …Energy Research Journal, Vol. 11, Issue 1 · 13 Nov 2020 · 8,371 accessesView PDFCite
Research ArticleOpen accessIn the abstractFire Evaluation of RC Frames Strengthened with FRPs Using Finite Element MethodReza Salehi, Abbas Akbarpour, Armaghan ShalbaftabarReinforced Concrete (RC) structures may confront with extreme loading conditions. Sometimes, structures are not only under extreme loading such as earthquakes but also, they may be subjected to fire. Therefore, investigation of reinforced concrete structures which are the most common ones is essential. In this study, experimental RC frame is considered to validate in ABAQUS finite element software. RC frame … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 4 · 5 Oct 2020 · 7,141 accessesView PDFCite
Research ArticleOpen accessIn the abstractFinite Element Evaluation of RC Frames Strengthened with FRPs under Fire and Lateral LoadsReza Salehi, Abbas AkbarpourReinforced concrete is one of the most common structures in the world. These structures may be under extreme loading conditions such as earthquake or they may confront with other flooding, impact or even the fire load. In the term of fire load, RC structures are very sensitive and due to the brittle behavior, the fast collapsing happens. In this research, … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 27 Sep 2020 · 6,709 accessesView PDFCite
InvestigationOpen accessIn the abstractInvestigating the Parameters Influencing the Behavior of Knee Braced Steel StructuresEdris Farokhi, Mehrdad GordiniIn Knee-Braced Frames (KBF), the brace is connected to the knee element rather than the beam-column joint. For reasons such as having sufficient lateral stiffness despite its adequate ductile behavior, the concentration of damage in the Double Knee-Braced structural elements and also ease of repair and replacement of these elements after an earthquake, this bracing system is preferred over conventional … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 21 Sep 2015 · 7,814 accessesView PDFCite
Research ArticleOpen accessIn the abstractDuctility Behavior Fiber Reinforced Concrete Beams Strengthened With Externally Bonded Glass Fiber Reinforced Polymer LaminatesMariappan Mahalingam, Ragunath Pulipakka Narashima Rao, Suguna KannanThe study presents the results of an experimental investigation conducted on Steel Fiber Reinforced Concrete (SFRC) beams with externally bonded Glass Fiber Reinforced Polymer (GFRP) laminates with a view to study their strength and ductility. A total of ten beams, 150×250 mm in cross-section were tested in the laboratory over an effective span of 2800 mm. Three fiber reinforced concrete … …American Journal of Applied Sciences, Vol. 10, Issue 1 · 24 Feb 2013 · 6,931 accessesView PDFCite