Quasilinear Symmetric Systems

2011 ◽  
pp. 169-202
Author(s):  
Hajer Bahouri ◽  
Jean-Yves Chemin ◽  
Raphaël Danchin
Keyword(s):  
Symmetric Systems

On Distributed Solution for Simultaneous Linear Symmetric Systems

2020 ◽  
Author(s):  
Chandan Misra ◽  
Utkarsh Parasrampuria ◽  
Sourangshu Bhattacharya ◽  
Soumya K. Ghosh
Keyword(s):  
Symmetric Systems

scholarly journals Parity-time symmetric systems with memory

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Zachary A. Cochran ◽  
Avadh Saxena ◽  
Yogesh N. Joglekar
Keyword(s):  
Systems With Memory ◽  
With Memory ◽  
Symmetric Systems

Vibration of General Symmetric Systems Using Group Theory

2021 ◽  
pp. 116087
Author(s):  
Bin Dong ◽  
Robert G. Parker
Keyword(s):  
Group Theory ◽  
Symmetric Systems

scholarly journals The cross operator and the singular value analysis for nonlinear symmetric systems

2009 ◽  
Author(s):  
Tudor C. Ionescu ◽  
Kenji Fujimoto ◽  
Jacquelien M. A. Scherpen
Keyword(s):  
Singular Value ◽  
Value Analysis ◽  
The Cross ◽  
Symmetric Systems

scholarly journals Enhanced Sensing of Weak Anharmonicities through Coherences in Dissipatively Coupled Anti-PT Symmetric Systems

2021 ◽  
Vol 126 (18) ◽  
Author(s):  
Jayakrishnan M. P. Nair ◽  
Debsuvra Mukhopadhyay ◽  
G. S. Agarwal
Keyword(s):  
Symmetric Systems

scholarly journals Neuromorphic Photonics: Neuromorphic Functions of Light in Parity-Time-Symmetric Systems (Adv. Sci. 15/2019)

2019 ◽  
Vol 6 (15) ◽  
pp. 1970092
Author(s):  
Sunkyu Yu ◽  
Xianji Piao ◽  
Namkyoo Park
Keyword(s):  
Symmetric Systems

scholarly journals Frequency Response Evaluation of Guitar Bodies with Different Bracing Systems

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 795
Author(s):  
Mircea Mihălcică ◽  
Mariana D. Stanciu ◽  
Sorin Vlase
Keyword(s):  
Structural Features ◽  
Dynamic Force ◽  
Classical Guitar ◽  
Elastic Symmetry ◽  
Frequency Responses ◽  
Points Of View ◽  
Coupled Plates ◽  
Natural Composite ◽  
Theoretical Results ◽  
Symmetric Systems

Wood is a natural composite, having a porous structure, with a complex elastic symmetry specific to orthotropic solid, influenced by three mutually perpendicular planes of elastic symmetry. The classical guitar is obtained from different wooden species, each of them having their own elastic properties and, as a whole, forming a lignocellulosic composite structure. Generally, some constructive parts of the classical guitar body are based on symmetry, starting from the structural features of wooden plates, which are symmetrically cut, and some patterns of the stiffening bars. The other elements, such as the strings system, are not symmetric. This study aims to evaluate the frequency responses of the guitar body as a symmetrical mechanical system from constructive points of view. Because theoretical results (analytic and numeric) regarding the symmetrical systems cannot be applied to quasi-symmetric systems, the dynamic response was analyzed from experiments performed on four types of classical guitar body (without neck), different from each other by the pattern of stiffening bars placed inside of the top plate. The experiments were performed using a Brüel&Kjær mini-shaker to excite the structure, and the signal was captured with accelerometers. The symmetric behavior of coupled plates from the guitar body was noticed in the case of an applied dynamic force of 110 Hz and 440 Hz, but in the case of 146 Hz, 588 Hz, 720 Hz, quasi skew symmetrical modes were recorded.

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