On Stable Numerical Simulation Strategies for Elasto-Plastic Deformation Processes of Shell Structures

2009 ◽  
Author(s):  
U. Montag ◽  
W.B. Kraetzig ◽  
J. Soric
Keyword(s):  
Numerical Simulation ◽  
Plastic Deformation ◽  
Shell Structures ◽  
Deformation Processes

scholarly journals Numerical Simulation By Means Of Finite Element Method Of Plastic Deformation Processes Of Lightweight Metallic Materials

2015 ◽  
Vol 67 (1) ◽  
pp. 111-114
Author(s):  
Claudia Girjob
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Plastic Deformation ◽  
Alloy System ◽  
Tensile Tests ◽  
Forming Limit ◽  
Metallic Materials ◽  
Deformation Processes ◽  
Experimental Researches ◽  
Forming Limit Curves

Abstract The present paper aims to study the forming behavior of lightweight metallic materials in order to reduce the total weight of the vehicles without affecting their performances. For the theoretical and experimental researches, among the lightweight metallic materials, the AZ31B magnesium alloy has been chosen, a representative alloy for the magnesium-zinc-aluminium alloy system. The results of the theoretical researches, made on finite elements models, were validated by means of experimental researches consisting of tensile tests and forming limit curves determination tests.

Determination of Constitutive Equation at the Deformation of Materials Using the Compression Test

2013 ◽  
Vol 837 ◽  
pp. 110-115 ◽  
Author(s):  
Monica Iordache ◽  
Eduard Niţu ◽  
Doina Iacomi
Keyword(s):  
Numerical Simulation ◽  
Plastic Deformation ◽  
Constitutive Equation ◽  
High Strain ◽  
Modern Method ◽  
Cold Plastic Deformation ◽  
Compression Tests ◽  
Deformation Processes ◽  
Strain Relationship

Numerical Simulationis a Modern Method to Optimize Cold Plastic Deformation Processes in Order Toprovide Product Quality, Reduction of Time and Costs of Execution. One of Theimportant Problems of Numerical Simulation is the Mode of Characterizing Theplastic Behaviour of the Material which Undergoes Deformation. the Resultsobtained through Simulation are Closer to Real Ones as the Description Ofmaterial Behaviour of the Piece is Done as Accurately as Possible. Thesimulation Results Depend on the Stress-Strain Relationship which is Obtainedexperimentally by Compression Tests. the Paper Presents the Mode of Determiningthe Constitutive Equation Starting from the Results of the Compression Test.This Test was Used because it Allows Achieving High Strain and the Stressdistribution is Similar to other Corresponding Plastic Deformation Processes.

Characterization of residual stresses generated during inhomogeneous plastic deformation

1998 ◽  
Vol 33 (3) ◽  
pp. 243-252 ◽  
Author(s):  
T Lorentzen ◽  
T Faurholdt ◽  
B Clausen ◽  
J Danckert
Keyword(s):  
Plastic Deformation ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Numerical Technique ◽  
Numerical Approach ◽  
Explicit Finite Element ◽  
Numerical Predictions ◽  
Deformation Processes ◽  
Elastic Strains

Residual stresses generated by macroscopic inhomogeneous plastic deformation are predicted by an explicit finite element (FE) technique. The numerical predictions are evaluated by characterizing the residual elastic strains by neutron diffraction using two different ( hkl) reflections. Intergranular residual elastic strains between subsets of grains are predicted numerically and verified by neutron diffraction. Subsequently, the measured residual strain profiles in the test samples are modified by the intergranular strains and compared to the engineering predictions of the FE technique. Results compare well and verify the capability of the numerical technique as well as the possibilities of experimental validation using neutron diffraction. The presented experimental and numerical approach will subsequently be utilized for the evaluation of more complicated plastic deformation processes resembling forming operations.

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