In this paper, an adaptive controller is applied to the piezoelectric actuators, PEA, in order to handle them. Our paper deals with the design of a new adaptive neuro-fast terminal sliding mode controller. The new adaptive control law using the terminal attractor concept is used in the finite time control procedure of the non-linear model. The PEA ...

By Ounissi Amor, Azeddine Kaddouri, Rachid Abdessemed

The previously formulated finite element for lung mechanics (MSCL) by the author is extended to include airflow and molecular transport by diffusion. The lung mechanics is analyzed in detail providing an insight into the deformation of the microstructural elements. Also, some refinements are introduced with respect to the previous model. Here, the ...

By Miloš Kojić

The biomechanical properties’ changes of the abdominal aortic aneurysms’ (AAA) walls are closely related to the pathological degeneration of the smooth muscle cells and the main fibrous components (collagen and elastin). In this study, the passive mechanical response of the aneurysmal aortic wall is computation...

By Bouteraa Samira, Bouaricha Amor, Zemouri Zahia, Berkani Mahièddine

In rocket engine nozzle design, flow separation is essential and, given the high temperatures and pressures in the thrust chamber, regenerative cooling is critical for maintaining the nozzle wall's integrity. This passage provides a summary of an in-depth numerical analysis of boundary layer separation and heat transfer within a 30°-15&A...

By Bensayah Khaled, Kamri Khadidja

The use of complex fluids is one of the modern techniques used in small devices in order to enhance their thermal performance. This paper is a numerical study of a complex fluid imprisoned in a chamber with two hot bodies exposed to a magnetic field of constant intensity. The upper and lower walls move horizontally at a constant velocity, while the...

By Abdeljalil Benmansour, Hacène Hamoudi

The mechanical response of blast-resistant vehicles, such as Infantry Fighting Vehicles (IFVs), Mechanized Infantry Combat Vehicles (MICVs), Armored Personal Vehicles (APVs), and Mine-Resistant Ambush-Protected (MRAP) vehicles, is crucial for their effective design. When designing armored vehicles, it is important to achieve a balance between rigid...

By Miloš S. Pešić, Aleksandar S. Bodić, Živana M. Jovanović Pešić, Nikola B. Jović, Miroslav M. Živković

The determination of the total aerodynamic load which negatively influences the movement of artillery projectiles is inevitable and indispensable in order to be able to increase or control their ranges. The main part of this aerodynamic load that has the most influence on projectile movement is the drag force, which acts in the opposite direction t...

By Abdellah Ferfouri, Toufik Allouche, Damir D. Jerković, Nebojša Hristov, Milan Vučković, Abdeselem Benmeddah

This study presents a numerical and analytical prediction of delamination of a repaired joint due to a defect in the composite under tensile loading. The three-dimensional finite element method is used to predict the delamination of a repaired plate with the VCCT method. The effects of the position of the delamination, percentage of the delaminated...

By Sofiane Talbi, Mokadem Salem, Belaïd Mechab, Tewfik Ghomari, Ahmed Allem, Mohammed Khalil Salem, Belabbes Bachir Bouiadjra

This paper aims to predict the behavior of a complex fluid though a small-sized thermal exchanger. The fluid used is of shear-thickening type of power-law index (n = 1.4) and Prandtl number (Pr = 50). The Ostwald model was utilized to define the dynamic viscosity. The exchanger consists of three rectangular cross-section tubes placed inside a therm...

By Hacène Hamoudi, Mohamed Bouzit

The main contribution of this study is to present a modified V-corrugated grooved absorber plate in the construction of plane solar air heaters for higher performance. The combined effects of extended heat transfer area due to the V-shaped absorber, the suction process by the grooves that maintains the convective flow closed to the heated absorber ...

By Maryam Moein Addini, Seyyed Abdolreza Gandjalikhan Nassab