پديد آورنده :
عليرضائي، مجيد
عنوان :
بهينه سازي توزيع ضخامت در شكل دهي سوپر پلاستيك قطعه نيم كروي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
ساخت و توليد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده صنايع و سيستم ها
صفحه شمار :
يازده، 76ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
رضا جعفري ندوشن
استاد مشاور :
محمود فرزين
توصيفگر ها :
سرب , مدل سازي اجزاي محدود , شبكه عصبي , الگوريتم ژنتيك
تاريخ نمايه سازي :
16/3/94
استاد داور :
مهدي سلماني تهراني، مصطفي جمشيديان
تاريخ ورود اطلاعات :
1396/10/02
دانشكده :
مهندسي صنايع و سيستم ها
چكيده انگليسي :
Optimizing the distribution of thickness form semispherical piece Superplastic Majid Alirezaiee m alirezaiee@me iut ac ir Date of Submission 2015 01 14 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Reza Jafari rjafari@cc iut ac irAbstractIn superplastic forming high elongations can be achieved and this method is used to produce complexparts One of the drawbacks of this method is non uniform thickness distribution in final parts In this papera new method is proposed to control thickness distribution in the process and produce a final part byuniform thickness by adding a part to the die Pure lead is selected in examining whether the method isapplicable due to its considerable strain rate dependency in ambient temperature At first tensile tests atvarious strain rates performed on the material to find required mechanical properties Then the current gasforming process was simulated and the pressure to have the optimum strain rate was calculated Afterdesigning and manufacturing the die a part was produced and experimental and predicted results werecompared to verify the simulation Since the proposed new method have several parameters pythonscripting in conjunction with neural network and genetic algorithm are used to optimize these parameters Optimizing the parameters dies designed and manufactured Producing a part by new method show theimprovement of thickness distribution comparing with the current process Minimum of thickness is alsoincreased about 20 percent that causes improvement of product performance and decreasing of part failurein forming Keywords Super plastic forming Thickness Distribution Pure lead Finite Elements Simulation Neural network Genetic Algorithm
استاد راهنما :
رضا جعفري ندوشن
استاد مشاور :
محمود فرزين
استاد داور :
مهدي سلماني تهراني، مصطفي جمشيديان
