ESR10

Safiullah TIMORIAN « Quasi-periodicity variability effects »

Education and Training

2014-2016 Master of science in Applied Mechanics with specialization in Computational Mechanics at Ecole Centrale de Nantes, France. (French Government Scholar) 2008-2011 Bachelor of science in Mechanical Engineering at Engineering Faculty of Kabul University, Afghanistan.                

Internship and Research

Numerical Simulation of smart composites, in the context of structural health monitoring for wind turbine blade structures in collaboration with ALSTOM and GE, at   IFSTTAR, Nantes. Numerical analysis of rotational galloping Gertie and flutter of  the Tacoma bridge deck using Hexpress, python scripts and Tecplot at Laboratory of GEM Ecole Centrale de Nantes.
ESR-10 stands for quasi-periodicity and variability effects. The objective is the definimg of the effect of quasi-periodicity that remain to be investigated in order to understand how this can be modeled. Most important will be to analyze if and how the presence of imperfection or irregularity can have a significant impact on the vibrational and/or acoustic behavior of elastic systems. The effects on micro-scale can influence the performance on macro- scale and thus it will be studied the possibility, inside the (quasi)-periodic structure to include and design by including these effects. Several effect are known in literature (the Anderson localization is one of the most famous) but some insights are now necessary in order to improve not only the simulation of these kind of problems but also to move to prototypes which can demonstrate on experimental basis the achievement of increased vibroacoustic performances (structural damping and/or acoustic transmission loss). Quasi periodicity effects are interesting phenomena in engineering applications. For instance If we consider an oscillating system, the quasi periodicity effects can promise to help  us understand the innermost regions of accession of the masses.
Safi