STRONG COUPLING IN MODELING SOLID-FLUID INTERACTION IN PAK SOFTWARE - THEORY AND SELECTED APPLICATIONS
Finite element (FE) modeling the motion of deformable bodies within a fluid, as well as the interaction between the bodies, has been a continuous challenge over the years. There are in principle two approaches – loose and strong coupling between the FE models of the two domains, with their advantages and drawbacks. We here present our concept...
By Velibor Isailović, Miljan Milošević, Nikola Kojić, Miloš Kojić
THREE-DIMENSIONAL NUMERICAL INVESTIGATION OF STATIC AERODYNAMIC COEFFICIENTS FOR AN ARTILLERY PROJECTILE USING STEADY-STATE RANS METHODOLOGY
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By Damir Jerković, Abdellah Ferfouri, Nebojša Hristov, Toufik Allouche, Igor Radisavljević, Mladen Josijević
NUMERICAL SIMULATION OF AORTIC DISSECTION: EVALUATING VIRTUAL SURGICAL INTERVENTIONS FOR IMPROVED HEMODYNAMIC OUTCOMES AND PERSONALIZED TREATMENT PLANNING
Aortic dissection is a severe clinical condition that demands a thorough understanding of the interactions between the true and false lumens. In this study, numerical simulations were performed for two patients, generating two preoperative and two postoperative models. The analyses were carried out using the PAKSF solver, a specialized tool for flu...
By Igor Saveljić, Tijana Đukić, Smiljana Tomašević, Nenad Filipović
A NEW INVESTIGATION OF THREE FATIGUE MODELS FOR ASSESSING CRACK PROPAGATION IN PIPELINES UNDER BENDING LOADING
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By Sofiane Maachou, Belaïd Mechab, Bachir Bel Abbes Bouiadjra
COMPUTATIONAL MODELING OF DRUG TRANSPORT AND PERFUSION WITHIN COMPLEX BIOLOGICAL SYSTEMS AND GROWING TUMORS
Mass transport is a fundamental process in living organisms, responsible for the delivery of oxygen, nutrients, and drugs from blood vessels to tissues, as well as the removal of waste products back to the vascular and lymphatic systems. This exchange occurs across various biological barriers, including blood vessel walls and cellular membranes, an...
By Vladimir Simić, Miljan Milošević, Bodan Milićević, E.J. Koay, Xuewu Liu, Antonio Martino, Rossana Terracciano, Carly Filgueira, Miloš Kojić
ARTIFICIAL INTELLIGENCE AND MACHINE LEARNING IN HEALTHCARE: ADVANCES AND IMPLEMENTATION CHALLENGES
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By Igor Saveljić, Miloš Kostić, Slavica Mačužić Saveljić, Žarko Milošević, Nenad Filipović
FAULT DETECTION USING RADIOSENSOR DIAGNOSTICS
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By Konstantin Boikov
VARIOUS FINITE ELEMENTS IN NUMERICAL ANALYSIS OF UNIAXIAL TESTS FOR THE CONCRETE DAMAGED PLASTICITY (CDP) CONSTITUTIVE MODEL
The concrete damaged plasticity (CDP) model is one of the most popular constitutive models implemented into various Finite Element Method software. The application to the real structures is documented in the literature, but still there are some doubts about the response in combination with the various finite elements. Simple benchmark examples simu...
By Vladimir Dunić, Nenad Grujović, Aleksandar Bodić, Dragan Rakić, Miroslav Živković
PENALTY CONTACT BETWEEN FEM AND SPH WITH FRICTION
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
OVERVIEW OF SURROGATE MODELING FOR HUXLEY-TYPE MUSCLE SIMULATIONS IN CARDIAC BIOMECHANICS
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