Study of the Thermomechanics of the Additive Manufacturing Process of Biocompatible Products Subject to the Viscoelastic Behavior of the Functional Material Polyetheretherketone

This study considers the problem of numerical modeling PEEK product’s 3D printing using FDM technology. The aim is to verify adequacy use a thermoviscoelastic model for computations deposition process and develop an algorithm calculating this process. Prony used describe behavior material under study; temperature-time shift described by Williams–Landel–Ferry function (WLF). To obtain values constants relaxation function, first, we data from other authors; however, after their substitution into simulation, it was not possible results close full-scale experiment. Therefore, realized our own DMA developed implemented in ANSYS package calculate non-stationary temperature fields stress–strain state structure during its layer-by-layer deposition. solve these problems, technology “killing” subsequent “aliving” material, package, used. verified with experiment on samples PEEK. A good consistency calculated shown.