TY - JOUR ID - 5899 TI - Analysis of Strain Inhomogeneity in Vortex Extrusion using Finite Element Method and Response Surface Methodology JO - Iranian Journal of Materials Forming JA - IJMF LA - en SN - AU - Ranjbari, Gohar AU - Doniavi, Ali AU - Shahbaz, Mehrdad AD - Department of Mechanical Engineering, Faculty of Engineering, Urmia University, Urmia, Iran AD - Department of Materials Science and Engineering, Faculty of Engineering, Urmia University, Urmia, Iran Y1 - 2020 PY - 2020 VL - 7 IS - 2 SP - 26 EP - 31 KW - Vortex extrusion KW - Response surface methodology KW - Finite Element Analysis KW - strain inhomogeneity DO - 10.22099/ijmf.2020.37855.1161 N2 - The effect of geometrical parameters involved in vortex extrusion (VE) die design, on AA1050 aluminium alloy processed by VE were investigated using finite element analysis (FEA) and response surface methodology (RSM). For this, VE die length (L), reduction in area (RA), twist angle , and position of control points in Beziers' formulation (C1) were considered as input parameters and strain inhomogeneity was considered as a response. Both standard deviation (S.D) and inhomogeneity index (Ci) were used to quantify the strain inhomogeneity from FEA results. Analysis of variance (ANOVA) was used to determine the significant parameters and to mathematically model the strain inhomogeneity. It was concluded that standard deviation (S.D) is not a good choice for examining the strain inhomogeneity distribution in VE technique. ANOVA results showed that , RA, and interaction between  and RA are the most significant parameters affecting the strain inhomogeneity. UR - https://ijmf.shirazu.ac.ir/article_5899.html L1 - https://ijmf.shirazu.ac.ir/article_5899_71c359b85d0e335ac3859b2bca3cb117.pdf ER -