MODELING AND SIMULATION OF CYCLICAL MECHANIC-THERMAL PROCESSING BY MEANS OF THE FINITE ELEMENT ANALYSIS (FEA)
Alfonso Brindis, Eleno1; Bissesar, Sanjeevkoemar1; Abdoel Wahid, Faizel1; González Quintero, Orestes2
1 Anton de Kom University of Suriname; 2 Universidad de Matanzas "Camilo Cienfuegos"
doi:10.20906/CPS/COB-2015-0329
Resumo
The compressive residual stresses formation and strain hardening into the surface layers of machines parts increase their performance, thereby are used a wide variety of surface hardening techniques as rolling and shot peening, but the high obtained levels of these physic-mechanical properties are not stable and fast decrease with the temperature raising during their work. However, at combining the cold plastic deformation with the ageing in two or three cycles, then it is possible increase that stability up to temperatures nearby the metal recrystallization temperature, such kind of treatment is named cyclical mechanic-thermal processing, which modeling and simulation, through the Finite Element Analysis, constitutes the main objective of the present work. In order to fulfill the established objective was employed the FEA-package ANSYS version 14.0, specifically a coupled-field analysis for combining the structural analysis (the plastic deformation of a little and fine plate) with the thermal analysis (the heating and cooling of the plate during the ageing), due to the input of one field analysis depends on the results from another analysis. Model predictions correlate well with experimental results, since with the increase in strain hardening the resistance to deformation of a material is increased and the compressive residual stresses become more compressive.
Palavras-chave: FEA; mechanic-thermal; processing; strain; stresses