4453

232 دكتري

دكتري

تبديل انرژي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي مكانيك

1387

چهارده، 98،[II]ص: مصور، جدول، نمودار

ص.ع به: فارسي و انگليسي

احمدرضا پيشه ور اصفهاني

محمود فرزين

فارسي به انگليسي- انگليسي به فارسي

88/2/21

بيژن برومند، مسعود در بندي، محمدسعيد سعيدي، ابراهيم شيراني، سعيد ضيائي راد

مهندسي مكانيك

ID232 دكتري

به فارسي وانگليسي: قابل رويت در نسخه ديجيتال

AbstractIn this study an Eulerian finite volume method is developed for the numerical simulation ofelastic plastic response of compressible solid materials under impact loading The governingequations of mass momentum and energy along with evolution equations for deviatoricstresses are solved in Eulerian conservation law form A fourth order CWENO shock capturing method that was developed for gas dynamics has been extended to high strain ratesolids problems In this method fluxes are determined on a staggered grid at places wheresolution is smooth As a result the method does not rely on the solution of Riemann problemsand enjoys the flexibility of using any type of equation of state Boundary conditions atmaterial interfaces are also treated by a special ghost cell approach The position of materialinterfaces is advanced to the new time using a particle level set method A fifth orderGodunov type central scheme is used to solve the Hamilton Jacobi HJ equation of levelsets in two space dimensions The capabilities of the proposed method is evaluated at the endby comparing numerical results with the experimental results and the reported benchmarksolutions for the Taylor rod impact spherical groove jetting and void collapse problems Key WordsTaylor rod impact particle level set central weighted essentially non oscillatory

احمدرضا پيشه ور اصفهاني

محمود فرزين

بيژن برومند، مسعود در بندي، محمدسعيد سعيدي، ابراهيم شيراني، سعيد ضيائي راد