This paper introduces the CAD user interface software developed to support example-driven simulations using the PAK finite element code. Built upon years of research and development by the authors, CAD represents a custom-built platform for three-dimensional model setup and result visualization, tightly integrated with the PAK solver. It facilitate...

By Miljan Milošević, Vladimir Simić, Bogdan Milićević, Velibor Isailović, Vladimir Ranković, Miloš Ivanović, Žarko Milošević, Dalibor Nikolić, Danko Milašinović, Arso Vukićević, Lazar Otašević, Mileta Stojanović, Nenad Filipović, Miloš Kojić, Boban Stojanović

The interaction between the Finite Element Method (FEM) and Smoothed Particle Hydrodynamics (SPH) is crucial in multiphysics simulations of granular–structure systems, impacts, and material behavior. This paper presents a penalty-based contact algorithm with Coulomb friction for FEM–SPH coupling. The method accounts for static and dynam...

By Marko Topalović, Miloš Ivanović, Snežana Vulović, Aleksandar Nikolić, Miroslav Živković

Huxley-type muscle models offer a physiologically grounded description of cardiac contraction but remain computationally prohibitive for large-scale, multi-scale simulations. This article reviews surrogate modeling strategies that alleviate these costs for ventricular biomechanics, with emphasis on data-driven (RNN/TCN/GRU) and physics-informed (PI...

By Bogdan Milićević, Miloš Ivanović, Boban Stojanović, Miljan Milošević, Miloš Kojić, Nenad Filipović