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Mohammad Bagherinoori

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0003-3306-2120
Education: PhD.
ScopusId: 57189896787
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
An efficient finite difference time domain algorithm for band structure calculations of Phononic crystal
Type
JournalPaper
Keywords
Phononic crystal, Wave propagation, Finite difference time domain, Displacement-based formulation
Year
2017
Journal Journal of Computational and Applied Research in Mechanical Engineering
DOI
Researchers Mehran Moradi ، Mohammad Bagherinoori

Abstract

In this paper, a new algorithm for studying elastic wave propagation in the phononic crystals is presented. At first, the displacement-based forms of elastic wave equations are derived and then the forms are discretized using finite difference method. So the new algorithm is called the displacement-based finite difference time domain (DBFDTD). Three numerical examples are computed with this method and the results are compared with experimental measurements and the conventional FDTD method. Also, the computational cost of the new approach is compared with the conventional FDTD method. The comparison showed that the calculation time of the DBFDTD method is 37.5 percent less than that of the FDTD method.