The purpose of this research was to investigate the prospect of continuous flow modelling in LS-DYNA using SPH-FEM coupling. The both methods (SPH and FEM) are based on the continuum mechanics, however, SPH implementation uses Lagrangian material framework, while FEM uses an Eulerian formulation for the fluid analysis, and Lagrangian formulation fo...

By Marko Topalović, Aleksandar Nikolić, Snežana Vulović, Vladimir P. Milovanović

The basic definitions and a history of the development of biomimetics as a discipline that considers nature-inspired design are presented in this paper. The discussion and the results of the application of principles of nature-inspired design in machine elements design are given. The fact that transition zones that Nature chose and designed on tree...

By Ivana D. Atanasovska, Dejan B. Momčilović

In this paper, turbulent fluid flow is analyzed using a two-equation turbulent finite element model that can calculate values in the viscous sublayer. Implicit integration of the equations is used for determining the fluid velocity, fluid pressure, turbulence, kinetic energy, and dissipation of turbulent kinetic energy. These values are calculated ...

By Aleksandar Nikolić, Marko Topalović, Vladimir Simić, Milan Blagojević

Molecular dynamics simulations of the rigid-anvil collision test are performed by using a two-dimensional computational setup that mimics the traditional ballistic Taylor test. In this extensively utilized computational setup, the slender nanoscale projectiles collide with a rigid wall with hypersonic striking velocities ranging from 3 km/s to 30 k...

By Sreten Mastilović

Vibration suppression has been thoroughly studied in the last few years. A number of methods has been proposed for this purpose. An evolving method lies in the search of band gap regions, that is, certain frequency ranges where vibrations are isolated. In the present investigation, a periodic unit cell of a chiral metamaterial has been created in o...

By Panagiotis Koutsianitis, Georgios K. Tairidis, Alexandros Kougkoulos, Georgios E. Stavroulakis

Cardiovascular diseases are one of the major health concerns globally, mainly caused by inadequate blood flow in different body parts. The lack of blood flow is often due to abnormal narrowing of blood vessels, and a systematic technique to boost blood flow in these areas can help cure the disease. One such method uses elevated temperatures to infl...

By Ignatius Fernandes, Nitin Bodke

Calendering is a mechanical finishing technology used in the leather, textile, and paper industry, with the mechanism of reshaping and deforming fibers of the web to be calendered with the help of pressure and heat transfer. In this paper, a comparative study has been done to examine the flow of heat inside the calender nip using an unsteady heat c...

By Neelam Gupta, Neel Kanth

Analysis of the influence of different forms of channel outlet on the heat exchange hydro-thermal characteristics over a rectangular channel embedded with trapezoidal baffle has been made in this paper. Four different forms of the outlets, viz., (I) an outlet similar to the inlet (case-A), (II) two outlets in the upper and lower parts of the exit s...

By Sandip Saha, Apurba Narayan Das, Santanu Raut

In an ultrasound-guided needle insertion, physicians should adjust a certain insertion angle and the position of the transducer to ensure that the initial point and final target are in-plane inside the imaging plane. One of the crucial problems in this interventional procedure is poor and inconsistent needle visibility in B-mode ultrasound. In this...

By Hesty Susanti, S. Suprijanto, Deddy Kurniadi

The purpose of this study is to create a universal computational model of a plane-stressed joint element, which could be implemented as a special finite element of the beam-column subassembly integrated into the FEA procedure to improve its accuracy. The combination both of the finite element method and the finite difference method has been accepte...

By Sergey Savin