naa a22 4500 510790755 CHVBK 20180411083319.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12289-011-1078-z doi (NATIONALLICENCE)springer-10.1007/s12289-011-1078-z Thinning analysis for hot forming of single-piece hemispherical dish end using finite element simulation and its empirical modeling [Elektronische Daten] [Harit Raval, Anish Gandhi, Mukesh Makwana, Harshit Dave, Yogesh Srivastav] Hot forming is an important forming method for production of small and medium sized single-piece pressure vessel dish ends. Thinning of the blank material with increased degree of forming is quite obvious. Present work shows finite element (FE) analysis of hot forming of single-piece hemispherical dish end (SPHDE) for predicting maximum thinning of blank during forming. Thinning analysis is performed for SPHDE of two different ferrous material grades SA-387 Gr22 and SA-516 as per ASME, Section II, Part A (2004). Percentage thinning results of FE analysis are verified with the practical material thinning data. Based on the thinning analysis, empirical relation for calculation of percentage thinning as a function of different dish ends′ geometry parameters is proposed. Empirically predicted percentage thinning is observed to be in good agreement with practical and FE simulation results. Thinning results obtained based on proposed FE simulation and empirical model can be helpful to design engineer in selecting thickness of developed blank considering thinning allowance for hot forming of SPHDE. Thinning analysis data can be used for optimizing the dish end geometrical parameters for minimum thinning during forming. Springer-Verlag France, 2011 Single-piece hemispherical dish end nationallicence Hot forming nationallicence Finite element analysis nationallicence Empirical relation nationallicence Percentage thinning nationallicence D : Diameter of dish end (mm) nationallicence E : Young's moduslus (MPa) nationallicence H : Height of dish end (mm) nationallicence Hf : Flange height of dish end (mm) nationallicence K : Strength coefficient (MPa) nationallicence n : Strain hardening exponent nationallicence t : Minimum thickness of dish end (mm) nationallicence T : Nominal blank thickness (mm) nationallicence tp : Percentage thinning nationallicence TS : Ultimate tensile strength (MPa) nationallicence YS : Yield strength (MPa) nationallicence Raval Harit Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut Gandhi Anish Mechanical Engineering Department, C. K. Pithawalla College of Engineering and Technology, 395007, Surat, Gujarat, India aut Makwana Mukesh LEMF, Larsen & Toubro Limited, Hazira Works, 394510, Surat, Gujarat, India aut Dave Harshit Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut Srivastav Yogesh Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 115-124 1960-6206 6:1<115 2013 6 12289 https://doi.org/10.1007/s12289-011-1078-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12289-011-1078-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Raval Harit Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 700 1- Gandhi Anish Mechanical Engineering Department, C. K. Pithawalla College of Engineering and Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 700 1- Makwana Mukesh LEMF, Larsen & Toubro Limited, Hazira Works, 394510, Surat, Gujarat, India aut NATIONALLICENCE 700 1- Dave Harshit Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 700 1- Srivastav Yogesh Mechanical Engineering Department, S. V. National Institute of Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 773 0- International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 115-124 1960-6206 6:1<115 2013 6 12289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer