پديد آورنده :
كامران ، كاظم
عنوان :
آناليز سه بعدي مواد تراكم ناپذير به روش تكرار با استفاده از المانهاي خطي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان ، دانشكده عمران
صفحه شمار :
ده ، 89 ، [ II ] ص . : مصور ، نمودار ، جدول
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
بيژن برومند
استاد مشاور :
محمدمهدي سعادت پور
توصيفگر ها :
فرمول بندي تركيبي , حفره متحرك , سيلندر جدار ضخيم , حجم كنترل
استاد داور :
حميد هاشم الحسيني ، مجتبي ازهري
چكيده فارسي :
به فارسي و انگليسي : قابل رؤيت در نسخه ديجيتال
چكيده انگليسي :
AbstractIn this research a new method has been proposed for finite element analysis of threedimensional problems with incompressible materials using linear tetrahedral elements Nowadays it is well understood that numerical one field models formulated by suchelements do not satisfy Babu ka Brezzi criteria The method presented in this thesis isbased on removing volumetric modes from the displacement velocity fields in an iterativemanner To this end a set of nodal forces are calculated with the aid of appropriatecontrol volumes The control volumes are constructed over the neighboring elements This has been performed by considering the following forms for the control volume 1 An edge based control volume is defined by assembling of smaller tetrahedrals constructed by dividing the main elements First an auxiliary node is considered at the middle of each element and then the smaller neighboring elements in each pair of main elements with a shared face are assembled The constructed control volumes do not overlap 2 An element based control volume is defined by assembling all neighboring elements having shared faces with a generic element In this form the control volumes overlap 3 A so called outer node based control volume is defined by assembling all elements connected to a global generic node Again in this form the control volumes overlap 4 A so called inner node based control volume In this form an element is divided into smaller ones so that four influence volumes are defined for the local vertex nodes Then at each global node the control volume is defined by assembling the influence volumes allocated to the node in all main elements connected to it The constructed control volumes do not overlap in this form With so defined control volumes performance of the method is examined through thesolution of a wide range of benchmark problems The results show that the method is notsensitive to the type of the control volumes and is very efficient in modeling theincompressibility effect
استاد راهنما :
بيژن برومند
استاد مشاور :
محمدمهدي سعادت پور
استاد داور :
حميد هاشم الحسيني ، مجتبي ازهري
