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By Bijjula Prabhakar Reddy, Oluwole Daniel Makinde, Paul Majani Matao

The extremely complex biological and biochemical processes are mainly treated by laboratory and clinical investigations. In recent decades, the application of computational modeling has become more important in research and applications in the medical sciences. Despite enormous efforts and achievements in this modeling, there is still a need for ne...

By Miloš Kojić, Miljan Milošević, Vladimir Simić, Bogdan Milićević

The paper presents the procedure of implicit stress integration for constitutive models for soil and rock. The theoretical basis of Mohr-Coulomb, Matsuoka-Nakai, Hoek-Brown and Hyperbolic soil constitutive models are presented. Stress integration was performed using the theory of incremental plasticity. The general procedure of implicit stress inte...

By Dragan Rakić, Miroslav Živković

This paper presents the integration of muscle fatigue modeling into the finite element solver PAK, based on an extended version of Hill’s phenomenological model. While traditional muscle models focus primarily on force generation, this study incorporates fatigue dynamics to provide a more realistic representation of muscle performance over ti...

By Boban Stojanović, Miloš Kojić, Srboljub Mijailovich

Wave acoustic equation is implemented and solved using finite element method in PAK solver to simulate propagation of sound waves, that cause oscillations of ear’s components, such as cochlea (part of inner ear). To simulate mechanical behaviour of cochlea, behaviour of fluid in chambers and behaviour of basilar membrane which separates them ...

By Milica Nikolić, Velibor Isailović, Nenad Filipović

X-ray angiography is one of the diagnostic procedures applied in clinical practice to analyze the state of patient-specific coronary arteries. During this examination a parameter called fractional flow reserve (FFR) is invasively measured to quantitatively assess the existence of potential stenosis and its significance. The software proposed in thi...

By Tijana Đukić, Ognjen Pavić, Lazar Dašić, Tijana Geroski, Nenad Filipović

In this paper, we give a short overview of the basic concept of stress integration for inelastic material models. This methodology was introduced by the author, initially for thermo-elasticplastic and creep deformation of metals, termed as ‘effective-stress-function’ (ESF), and then generalized to the ‘governing parameter method&r...

By Miloš Kojić

This study examines mixed convection heat transfer in a lid-driven triangular cavity containing three heated horizontal finned cylinders immersed in power-law fluids. The cavity features inclined sidewalls maintained at a cold temperature, while the top adiabatic lid moves at a uniform velocity. The objective is to analyze the fluid’s behavio...

By Youcef Lakahal, Houssem Laidoudi

Agitator shapes are of paramount importance in mixing processes, prompting researchers to explore new configurations to improve these operations. Our study focuses on the three-dimensional fluid dynamics in a flat-bottomed cylindrical tank equipped with different anchor shapes, ranging from the standard configuration to modified variants. Using bot...

By Abderrahim Sidi Mohammed Nekrouf, Sarra Youcefi, Mohamed Bouzit

This paper explores the dynamics and stability of measles infection within a specified population, utilizing the SEIRV+D model. The study commences by establishing the equilibrium points and determining the reproduction number. The stability of this equilibria is contingent on the calculated reproduction number. The research draws upon real data ob...

By Maja Kukusheva Paneva, Natasha Stojkovik, Vladimir Milićević