3928

3706

كارشناسي ارشد

طراحي كاربردي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1386

ده، 83، [II] ص.: مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

محمود سليمي

سعيد ضيايي راد

06/03/87

عليرضا شهيدي، محمود كدخدايي

1396/03/03

كتابنامه

مكانيك

مهندسي مكانيك

ID3706

به فارسي و انگليسي: قابل رؤيت در نسخه ديجيتال

Abstract In this dissertation one of the mechanical characteristics of nano structural Aluminumnamed Nanoindentation has been investigated The method is based on semi continuesfundamentals The aluminum plate is made up of Accumulative Roll Bonding In Accumulative Roll Bonding the plate thickness too decreases and so the strains are toolarge Then two sheets placed over each other and the process continued to gain the nano structure material The great characteristics of nano structural materials such as high strength properflexibility fatigue resistance wear resistance high stiffness high penetration optical andmagnetic characteristic has made their wide usage at electronic automobile aviation andmilitary industries Daily increasing demands for new products in field of nano forced each country towork on this new branch of science and industry Mechanical behavior of nano structural materials is recently worked by researchers Controlled experiments in nano scale and atomic simulation methods like moleculardynamics particularly for large scale problems are nearly impossible So multi scale models like semi continues are widely used and are approved as themost successful methods The dissertation concentrates on multi scale modeling because ofits efficiency Semi continues is itself a multi scale method and is based on considering some of theatoms and ignoring the other ones to simulate the mechanical behavior of material This method logically decreases the system s degrees of freedom so calculation theforce and energy is so fast In some areas all the atom s details considered as required andin some others the continues assumptions made

محمود سليمي

سعيد ضيايي راد

عليرضا شهيدي، محمود كدخدايي