Análisis numérico computacional térmico en estructuras basadas en superficies mínimas triperiódicas para aplicaciones en regeneración de tejidos

Abstract

This study examines the thermo-mechanical behavior of porous structures based on Triply Periodic Minimal Surfaces (TPMS), using Gyroid and Schwarz-P geometries fabricated in Ti6Al4V and stainless steel 316L. Simulations were conducted in ANSYS 2024 R1 under steady-state and transient thermal conditions, applying a time-dependent heat flux and initial bed temperatures ranging from 150 °C to 400 °C. Von Mises stress and total deformation were evaluated to assess mechanical performance across different configurations. Ti6Al4V exhibited greater resistance with reduced deformation, while 316L showed a more ductile response. Schwarz-P geometry resulted in less deformation than Gyroid, with a more stable behavior under thermal gradients. Additionally, higher bed preheat temperatures led to significant reductions in residual stress, in agreement with prior experimental evidence. The combination of Schwarz-P geometry and Ti6Al4V under transient conditions emerges as an optimal strategy for achieving structural integrity and thermal resistance.