مسعود رخش خورشید
استادیار، مهندسی مکانیک، گروه مکانیک، دانشگاه صنعتی بیرجند، بیرجند
[ 1 ] - استفاده از قانون نمایی جهت مدل‌سازی منحنی‌های سیلان تغییر شکل گرم فولاد خط لوله ایکس شصت و پنج
برای مدل سازی منحنی‌های سیلان مواد مختلف طی فرآیندهای تغییر شکل گرم از مدل‌های جامع گوناگونی استفاده می‌شود. در این مدل‌ها منحنی سیلان ماده به عنوان تابعی از دما، نرخ کرنش و کرنش بیان می‌شود. در این تحقیق از مدل قانون نمایی با ثابت‌های وابسته به کرنش برای مدل‌سازی منحنی‌های سیلان فولاد خط لوله ایکس شصت و پنج در شرایط تغییر شکل گرم استفاده شده است. نتایج حاصل از این مدل با نتایج حاصل از مدلی که ...
[ 2 ] - A SVM model to predict the hot deformation flow curves of AZ91 magnesium alloy
Abstract In this work, a support vector machine (SVM) model was developed to predict the hot deformation flow curves of AZ91 magnesium alloy. The experimental stress-strain curves, obtained from hot compression testing at different deformation conditions, were sampled. Consequently, a data base with the input variables of the deformation temperature, strain rate and strain and the output variab...
[ 3 ] - A Robust RBF-ANN Model to Predict the Hot Deformation Flow Curves of API X65 Pipeline Steel
Abstract In this research, a radial basis function artificial neural network (RBF-ANN) model was developed to predict the hot deformation flow curves of API X65 pipeline steel. The results of the developed model was compared with the results of a new phenomenological model that has recently been developed based on a power function of Zener-Hollomon parameter and a third order polynomial functio...
[ 4 ] - A comparative study on constitutive modeling of hot deformation flow curves in AZ91 magnesium alloy
Modeling the flow curves of materials at elevated temperatures is the first step in mathematical simulation of the hot deformation processes of them. In this work a comparative study was provided to examine the capability of three different constitutive equations in modeling the hot deformation flow curves of AZ91 magnesium alloy. For this, the Arrhenius equation with strain dependent constants...
[ 5 ] - MODELING THE HOT DEFORMATION FLOW CURVES OF API X65 PIPELINE STEEL USING THE POWER LAW EQUATION
Till now, different constitutive models have been applied to model the hot deformation flow curves of different materials. In this research, the hot deformation flow stress of API X65 pipeline steel was modeled using the power law equation with strain dependent constants. The results was compared with the results of the other previously examined constitutive equations including the Arrhenius eq...
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