TY - JOUR ID - 3238 TI - Investigation of Effective Parameters of the Two-Layer Sheet Hydroforming Process for Hollow Parts with Complex Geometry JO - Iranian Journal of Materials Forming JA - IJMF LA - en SN - AU - Saghari, M. AU - Afsari, A. AD - Mechanical Engineering Department, Islamic Azad University, Shiraz, Iran AD - Mechanical Engineering Department, Islamic Azad university, Shiraz - Iran Y1 - 2015 PY - 2015 VL - 2 IS - 2 SP - 27 EP - 34 KW - sheet hydroforming KW - complex geometry KW - Finite Element Analysis KW - friction KW - multistage pressure DO - 10.22099/ijmf.2015.3238 N2 - AbstractHydroforming process is a deep stretching process only with the difference that a fluid is used instead of the mandrel. This paper investigates the hydroforming process of non-cylindrical and non-spherical geometries using finite element analysis software to calculate the influences of effective process parameters such as the coefficient of friction between the surfaces and the pressure applied during the process. Results of this process simulation indicate that decreasing the friction between surfaces, with an optimum lubrication, can decrease the changes in thickness which is related to sheet heightening this leads to a final product with more uniform thickness and more appropriate strength. On the other hand, it is observed that with pressure change there are very slight changes in the thickness for this geometry which can be neglected. The geometry of the mold also showed a great influence on the final quality of the formed sheet.Keywords: sheet hydroforming, complex geometry, finite element analysis, friction, multistage pressure. UR - https://ijmf.shirazu.ac.ir/article_3238.html L1 - https://ijmf.shirazu.ac.ir/article_3238_eb3ab9d7730282f31c9b8b4b8d87f6d4.pdf ER -