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FEM Numerical Simulation and Experimental Investigation on End‐Forming of Thin‐Walled Tubes Using a Die
Author(s) -
Schaeffer Lirio,
Brito Alberto M. G.
Publication year - 2007
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200706288
Subject(s) - formability , materials science , forming processes , die (integrated circuit) , finite element method , mechanical engineering , tube (container) , metal forming , deformation (meteorology) , composite material , structural engineering , engineering
Thin‐walled tubes are applied in several industrial areas, as heat exchangers, shock absorbers, preforms to other metal forming processes, etc. In this study an experimental and theoretical investigation is performed involving tube end expansion, reduction and inversion processes using a die. The parameters that govern each process are investigated. A brief description of each process and a summary of the state of art are presented. The material employed in the experimental tests is an AISI 1010 carbon steel and all the work is carried out at room temperature. The theoretical investigation is done using FEM software QFORM 3D, version 4.1.5. In order to feed the software with realistic data stress‐strain curves for the material were obtained by means of compression tests and the tribological conditions at the contact interface between the tube and the tools was estimated by means of ring compression method. The investigation on the tube end‐forming processes focused mainly on understanding modes of deformation and on establishing formability limits for each of them. The results show that processes for end‐forming of thin‐walled tubes are successful only within a compact range of process parameters.