پديد آورنده :
اسمعيل زاده، حسن
عنوان :
تحليل وطراحي سيستم پاندولي اصطكاكي تحت زلزله به روش اجزاء محدود
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
76ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي وانگليسي
استاد راهنما :
محمود فرزين، محمدمهدي سعادتپور
استاد مشاور :
سعيد ضيايي راد
تاريخ نمايه سازي :
19/6/91
استاد داور :
محمدرضا فروزان، مهران مرادي
تاريخ ورود اطلاعات :
1396/09/18
چكيده فارسي :
به فارسي وانگليسي قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Analysis and Design of Friction Pendulum System under Earthquake Load with Finite Element Method Hasan Esmaeilzade h esmaeelzade@me iut ac ir Date of Submission 2012 01 29 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Mahmoud Farzin farzin@cc iut ac irSupervisor Mohammad Mehdi SaadatpoorAbstract Nowadays due to risk of earthquake on buildings and structures engineers suggest use of seismicisolators in important places such as bridges buildings and nuclear plants to reduce earthquake load In thisthesis after a survey on various types of earthquakes such as EL CENTRO which is most importantearthquake that happened in California at 1940 some of the usual seismic isolators are introduced Amongthese isolators friction pendulum system is explained in more detail This type of seismic isolator is suitablefor wide buildings and buildings with maximum 10 to 15 floors For analysis of friction pendulum bearingAbaqus software is used because of its capability in modeling of contact between curve surfaces andsimulation of earthquake Friction pendulum bearing seismic isolator consists of three main parts of concaveplate slider and housing plate in which the slider slips over the concave plate At first vibration analysis of friction pendulum bearing under shaking table will be done by abaqus andResults of these simulations are compared with experimental results It is observed that by using frictionpendulum bearing acceleration of the structure decreases about 80 as a compared with a system with noisolator For decreasing friction coefficient between surfaces PTFE is used which friction coefficient of itwith stainless steel is 0 05 and it is very low amount as compare with other materials Two parameters whichhave important roles in acceleration of the structure are radius of the concave plate of the bearing and frictioncoefficient Effect of radius on the acceleration of structure with friction pendulum bearing is studied and it isobserved that increasing radius of concave plate decreases acceleration of the top of the structure Also it isshown that by increasing friction coefficient acceleration of the top of the structure rises Then stressanalysis of friction pendulum system under different building loads such as 10 ton to 100 ton for buildingswith 3 floors to 8 floors is done Then acceptable dimensions of friction pendulum systems under these loadsof the building and earthquake are determined and suitable radii of concave plate for decreasing accelerationand stress are suggested In these analyses material of friction pendulum bearing is assumed to be cast ironwith yield stress of 200 Mpa Finally methods of manufacturing of different parts of the friction pendulumsystem are proposed For manufacturing these parts casting method is suggested also for making concaveplate a stainless steel plate with thickness of 2 5 mm must attached to concave plate For attaching these twoparts explosive welding is suggested Also characteristics of lubricants such as PTFE which are used in thissystem are discussed keywordsFriction pendulum bearing earthquake finite element method
استاد راهنما :
محمود فرزين، محمدمهدي سعادتپور
استاد مشاور :
سعيد ضيايي راد
استاد داور :
محمدرضا فروزان، مهران مرادي
