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<!DOCTYPE html> <html lang="en" dir="ltr"> <head>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-P63WKM1TM1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-P63WKM1TM1'); </script>  <script type="text/javascript" > (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date(); for (var j = 0; j < document.scripts.length; j++) {if (document.scripts[j].src === r) { return; }} k=e.createElement(t),a=e.getElementsByTagName(t)[0],k.async=1,k.src=r,a.parentNode.insertBefore(k,a)}) (window, document, "script", "https://mc.yandex.ru/metrika/tag.js", "ym"); ym(55165297, "init", { clickmap:false, trackLinks:true, accurateTrackBounce:true, webvisor:false }); </script> <noscript><div><img src="https://mc.yandex.ru/watch/55165297" style="position:absolute; left:-9999px;" alt="" /></div></noscript>    <title>Search results for: Sh. Tavousi Tafreshi</title> <meta name="description" content="Search results for: Sh. Tavousi Tafreshi"> <meta name="keywords" content="Sh. Tavousi Tafreshi"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Sh. 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Tavousi Tafreshi"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 9</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Sh. Tavousi Tafreshi</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Fragility Assessment for Torsionally Asymmetric Buildings in Plan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Feli">S. Feli</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Tavousi%20Tafreshi"> S. Tavousi Tafreshi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ghasemi"> A. Ghasemi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper aims at evaluating the response of three-dimensional buildings with in-plan stiffness irregularities that have been subjected to two-way excitation ground motion records simultaneously. This study is broadly-based fragility assessment with greater emphasis on structural response at in-plan flexible and stiff sides. To this end, three type of three-dimensional 5-story steel building structures with stiffness eccentricities, were subjected to extensive nonlinear incremental dynamic analyses (IDA) utilizing Ibarra-Krawinkler deterioration models. Fragility assessment was implemented for different configurations of braces to investigate the losses in buildings with center of resisting (CR) eccentricities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ibarra-Krawinkler" title="Ibarra-Krawinkler">Ibarra-Krawinkler</a>, <a href="https://publications.waset.org/abstracts/search?q=fragility%20assessment" title=" fragility assessment"> fragility assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible%20and%20stiff%20side" title=" flexible and stiff side"> flexible and stiff side</a>, <a href="https://publications.waset.org/abstracts/search?q=center%20of%20resisting" title=" center of resisting"> center of resisting</a> </p> <a href="https://publications.waset.org/abstracts/56100/fragility-assessment-for-torsionally-asymmetric-buildings-in-plan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56100.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">205</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Effects of Directivity and Fling Step on Buildings Equipped with J-Hook Sandwich Composite Walls and Reinforced Concrete Shear Walls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Majid%20Saaly">Majid Saaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahriar%20Tavousi%20Tafreshi"> Shahriar Tavousi Tafreshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Nazari%20Afshar"> Mehdi Nazari Afshar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The structural systems with the sandwich composite wall (SCSSC) are of very popular due to their ductileness and competency to swallow more energy and power than standard reinforced concrete shear walls. The purpose of this enhanced system is in high-rise building, Nuclear power plant facilities, and bridge slabs are much more. SCSSCs showed acceptable seismic performance under experimental tests and cyclic loading from the points of view of in-plane and out-of-plane shear and flexural interaction, in-plane punching shear, and compressive behavior. The use of sandwich composite walls with J-hook connectors has a significant effect on energy dissipation and reduction of dynamic responses of mid-rise and high-rise structural models. By changing the systems of the building from SW to SCWJ, the maximum inter-story drift values of ten- and fifteen-story models are reduced by up to 25% and 35%, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=J-Hook%20sandwich%20composite%20walls" title="J-Hook sandwich composite walls">J-Hook sandwich composite walls</a>, <a href="https://publications.waset.org/abstracts/search?q=fling%20step" title=" fling step"> fling step</a>, <a href="https://publications.waset.org/abstracts/search?q=directivity" title=" directivity"> directivity</a>, <a href="https://publications.waset.org/abstracts/search?q=IDA%20analyses" title=" IDA analyses"> IDA analyses</a>, <a href="https://publications.waset.org/abstracts/search?q=fractile%20curves" title=" fractile curves"> fractile curves</a> </p> <a href="https://publications.waset.org/abstracts/158618/effects-of-directivity-and-fling-step-on-buildings-equipped-with-j-hook-sandwich-composite-walls-and-reinforced-concrete-shear-walls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158618.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">156</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Fragility Assessment for Vertically Irregular Buildings with Soft Storey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Akhavan">N. Akhavan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sh.%20Tavousi%20Tafreshi"> Sh. Tavousi Tafreshi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ghasemi"> A. Ghasemi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Seismic behavior of irregular structures through the past decades indicate that the stated buildings do not have appropriate performance. Among these subjects, the current paper has investigated the behavior of special steel moment frame with different configuration of soft storey vertically. The analyzing procedure has been evaluated with respect to incremental dynamic analysis (IDA), and numeric process was carried out by OpenSees finite element analysis package. To this end, nine 2D steel frames, with different numbers of stories and irregularity positions, which were subjected to seven pairs of ground motion records orthogonally with respect to Ibarra-Krawinkler deterioration model, have been investigated. This paper aims at evaluating the response of two-dimensional buildings incorporating soft storey which subjected to bi-directional seismic excitation. The IDAs were implemented for different stages of PGA with various ground motion records, in order to determine maximum inter-storey drift ratio. According to statistical elements and fracture range (standard deviation), the vulnerability or exceedance from above-mentioned cases has been examined. For this reason, fragility curves for different placement of soft storey in the first, middle and the last floor for 4, 8, and 16 storey buildings have been generated and compared properly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=special%20steel%20moment%20frame" title="special steel moment frame">special steel moment frame</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20storey" title=" soft storey"> soft storey</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20dynamic%20analysis" title=" incremental dynamic analysis"> incremental dynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=fragility%20curve" title=" fragility curve"> fragility curve</a> </p> <a href="https://publications.waset.org/abstracts/56911/fragility-assessment-for-vertically-irregular-buildings-with-soft-storey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56911.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">349</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Evaluating Probable Bending of Frames for Near-Field and Far-Field Records</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Majid%20Saaly">Majid Saaly</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahriar%20Tavousi%20Tafreshi"> Shahriar Tavousi Tafreshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Nazari%20Afshar"> Mehdi Nazari Afshar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most reinforced concrete structures are designed only under heavy loads have large transverse reinforcement spacing values, and therefore suffer severe failure after intense ground movements. The main goal of this paper is to compare the shear- and axial failure of concrete bending frames available in Tehran using incremental dynamic analysis under near- and far-field records. For this purpose, IDA analyses of 5, 10, and 15-story concrete structures were done under seven far-fault records and five near-faults records. The results show that in two-dimensional models of short-rise, mid-rise and high-rise reinforced concrete frames located on Type-3 soil, increasing the distance of the transverse reinforcement can increase the maximum inter-story drift ratio values up to 37%. According to the existing results on 5, 10, and 15-story reinforced concrete models located on Type-3 soil, records with characteristics such as fling-step and directivity create maximum drift values between floors more than far-fault earthquakes. The results indicated that in the case of seismic excitation modes under earthquake encompassing directivity or fling-step, the probability values of failure and failure possibility increasing rate values are much smaller than the corresponding values of far-fault earthquakes. However, in near-fault frame records, the probability of exceedance occurs at lower seismic intensities compared to far-fault records. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IDA" title="IDA">IDA</a>, <a href="https://publications.waset.org/abstracts/search?q=failure%20curve" title=" failure curve"> failure curve</a>, <a href="https://publications.waset.org/abstracts/search?q=directivity" title=" directivity"> directivity</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20floor%20drift" title=" maximum floor drift"> maximum floor drift</a>, <a href="https://publications.waset.org/abstracts/search?q=fling%20step" title=" fling step"> fling step</a>, <a href="https://publications.waset.org/abstracts/search?q=evaluating%20probable%20bending%20of%20frames" title=" evaluating probable bending of frames"> evaluating probable bending of frames</a>, <a href="https://publications.waset.org/abstracts/search?q=near-field%20and%20far-field%20earthquake%20records" title=" near-field and far-field earthquake records"> near-field and far-field earthquake records</a> </p> <a href="https://publications.waset.org/abstracts/149698/evaluating-probable-bending-of-frames-for-near-field-and-far-field-records" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149698.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">108</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Efficiency of Geocell Reinforcement for Using in Expanded Polystyrene Embankments via Numerical Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20N.%20Moghaddas%20Tafreshi">S. N. Moghaddas Tafreshi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20M.%20Amin%20Ghotbi"> S. M. Amin Ghotbi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a numerical study for investigating the effectiveness of geocell reinforcement in reducing pressure and settlement over EPS geofoam blocks in road embankments. A 3-D FEM model of soil and geofoam was created in ABAQUS, and geocell was also modeled realistically using membrane elements. The accuracy of the model was tested by comparing its results with previous works. Sensitivity analyses showed that reinforcing the soil cover with geocell has a significant influence on the reduction of imposed stresses over geofoam and consequently decreasing its deformation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EPS%20geofoam" title="EPS geofoam">EPS geofoam</a>, <a href="https://publications.waset.org/abstracts/search?q=geocell" title=" geocell"> geocell</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforcement" title=" reinforcement"> reinforcement</a>, <a href="https://publications.waset.org/abstracts/search?q=road%20embankments" title=" road embankments"> road embankments</a>, <a href="https://publications.waset.org/abstracts/search?q=lightweight%20fill" title=" lightweight fill"> lightweight fill</a> </p> <a href="https://publications.waset.org/abstracts/74971/efficiency-of-geocell-reinforcement-for-using-in-expanded-polystyrene-embankments-via-numerical-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74971.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">273</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Experimental Investigation on the Efficiency of Expanded Polystyrene Geofoam Post and Beam System in Protecting Lifelines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masood%20Abdollahi">Masood Abdollahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Naser%20Moghaddas%20Tafreshi"> Seyed Naser Moghaddas Tafreshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Expanded polystyrene (EPS) geofoam is a cellular geosynthetic material that can be used to protect lifelines (e.g. pipelines, electricity cables, etc.) below ground. Post and beam system is the most recent configuration of EPS blocks which can be implemented for this purpose. It provides a void space atop lifelines which allows settlement of the loading surface with imposing no pressure on the lifelines system. This paper investigates the efficiency of the configuration of post-beam system subjected to static loading. To evaluate the soil surface settlement, beam deformation and transferred pressure over the beam, laboratory tests using two different densities for EPS blocks are conducted. The effect of geogrid-reinforcing the cover soil on system response is also investigated. The experimental results show favorable performance of EPS post and beam configuration in protecting underground lifelines.  <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beam%20deformation" title="beam deformation">beam deformation</a>, <a href="https://publications.waset.org/abstracts/search?q=EPS%20block" title=" EPS block"> EPS block</a>, <a href="https://publications.waset.org/abstracts/search?q=laboratory%20test" title=" laboratory test"> laboratory test</a>, <a href="https://publications.waset.org/abstracts/search?q=post-Beam%20system" title=" post-Beam system"> post-Beam system</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20surface%20settlement" title=" soil surface settlement"> soil surface settlement</a> </p> <a href="https://publications.waset.org/abstracts/83943/experimental-investigation-on-the-efficiency-of-expanded-polystyrene-geofoam-post-and-beam-system-in-protecting-lifelines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83943.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">238</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Development of a Suitable Model for Energy Storage in Residential Buildings in Ahvaz Using Energy Plus Software</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farideh%20Azimi">Farideh Azimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sam%20Vahedi%20Tafreshi"> Sam Vahedi Tafreshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research tries to study the residential buildings in Ahvaz, the common materials used, and the impact of passive methods of energy storage (as one of the most effective ways to reduce energy consumption in residential complexes) in order to achieve patterns for construction of residential buildings in Ahvaz conditions to reduce energy consumption. In this research, after studying Ahvaz conditions, the components of an existing building were simulated in Energy Plus software, and the climatic data of Ahvaz station was introduced to software. Then to achieve the most optimal conditions of energy consumption in Ahvaz conditions, each of the residential building elements was optimized. The results of simulation showed that using inactive materials and design including double glass, outside wall insulation, inverted roof, etc. in the buildings can reduce energy consumption in the hot and dry climate of Ahvaz. Among the parameters investigated, the inverted roof was the most effective energy saving pattern. According to the results of simulation of the entire building with the most optimal parameters, energy consumption can be saved by a mean of 12.51% in buildings of Ahvaz, and the obtained pattern can also be used in similar climates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=residential%20buildings" title="residential buildings">residential buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title=" thermal comfort"> thermal comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20storage" title=" energy storage"> energy storage</a>, <a href="https://publications.waset.org/abstracts/search?q=Energy%20Plus%20software" title=" Energy Plus software"> Energy Plus software</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahvaz" title=" Ahvaz"> Ahvaz</a> </p> <a href="https://publications.waset.org/abstracts/72133/development-of-a-suitable-model-for-energy-storage-in-residential-buildings-in-ahvaz-using-energy-plus-software" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72133.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">359</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> Numerical Investigation on Performance of Expanded Polystyrene Geofoam Block in Protecting Buried Lifeline Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abdollahi">M. Abdollahi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20N.%20Moghaddas%20Tafreshi"> S. N. Moghaddas Tafreshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Expanded polystyrene (EPS) geofoam is often used in below ground applications in geotechnical engineering. A most recent configuration system implemented in roadways to protect lifelines such as buried pipes, electrical cables and culvert systems could be consisted of two EPS geofoam blocks, “posts” placed on each side of the structure, an EPS block capping, “beam” put atop two posts, and soil cover on the beam. In this configuration, a rectangular void space will be built atop the lifeline. EPS blocks will stand all the imposed vertical forces due to their strength and deformability, thus the lifeline will experience no vertical stress. The present paper describes the results of a numerical study on the post and beam configuration subjected to the static loading. Three-dimensional finite element analysis using ABAQUS software is carried out to investigate the effect of different parameters such as beam thickness, soil thickness over the beam, post height to width ratio, EPS density, and free span between two posts, on the stress distribution and the deflection of the beam. The results show favorable performance of EPS geofoam for protecting sensitive infrastructures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beam" title="beam">beam</a>, <a href="https://publications.waset.org/abstracts/search?q=EPS%20block" title=" EPS block"> EPS block</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20analysis" title=" numerical analysis"> numerical analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=post" title=" post"> post</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20distribution" title=" stress distribution"> stress distribution</a> </p> <a href="https://publications.waset.org/abstracts/74818/numerical-investigation-on-performance-of-expanded-polystyrene-geofoam-block-in-protecting-buried-lifeline-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74818.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">244</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Non-Linear Load-Deflection Response of Shape Memory Alloys-Reinforced Composite Cylindrical Shells under Uniform Radial Load</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Behrang%20Tavousi%20Tehrani">Behrang Tavousi Tehrani</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad-Zaman%20Kabir"> Mohammad-Zaman Kabir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shape memory alloys (SMA) are often implemented in smart structures as the active components. Their ability to recover large displacements has been used in many applications, including structural stability/response enhancement and active structural acoustic control. SMA wires or fibers can be embedded with composite cylinders to increase their critical buckling load, improve their load-deflection behavior, and reduce the radial deflections under various thermo-mechanical loadings. This paper presents a semi-analytical investigation on the non-linear load-deflection response of SMA-reinforced composite circular cylindrical shells. The cylinder shells are under uniform external pressure load. Based on first-order shear deformation<em> shell theory (FSDT),</em> the equilibrium equations of the structure are derived. One-dimensional simplified Brinson’s model is used for determining the SMA recovery force due to its simplicity and accuracy. Airy stress function and Galerkin technique are used to obtain non-linear load-deflection curves. The results are verified by comparing them with those in the literature. Several parametric studies are conducted in order to investigate the effect of SMA volume fraction, SMA pre-strain value, and SMA activation temperature on the response of the structure. It is shown that suitable usage of SMA wires results in a considerable enhancement in the load-deflection response of the shell due to the generation of the SMA tensile recovery force. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=airy%20stress%20function" title="airy stress function">airy stress function</a>, <a href="https://publications.waset.org/abstracts/search?q=cylindrical%20shell" title=" cylindrical shell"> cylindrical shell</a>, <a href="https://publications.waset.org/abstracts/search?q=Galerkin%20technique" title=" Galerkin technique"> Galerkin technique</a>, <a href="https://publications.waset.org/abstracts/search?q=load-deflection%20curve" title=" load-deflection curve"> load-deflection curve</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20stress" title=" recovery stress"> recovery stress</a>, <a href="https://publications.waset.org/abstracts/search?q=shape%20memory%20alloy" title=" shape memory alloy"> shape memory alloy</a> </p> <a href="https://publications.waset.org/abstracts/96718/non-linear-load-deflection-response-of-shape-memory-alloys-reinforced-composite-cylindrical-shells-under-uniform-radial-load" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96718.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">188</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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