@Article{icces.2023.010582,
AUTHOR = {Xiaochen	Wang, Wei Tian, Shengxi Zhou, Peng Li, Zhichun Yang, Yiren Yang},
TITLE = {Damping	Influences	on	Instability	Characteristics	of	Panel	Aero-ThermoElastic	System},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {26},
YEAR = {2023},
NUMBER = {1},
PAGES = {1--1},
URL = {http://www.techscience.com/icces/v26n1/53898},
ISSN = {1933-2815},
ABSTRACT = {The	complex	damping	influences	on	the	instability	characteristics	of	the	panel	aero-thermo-elastic	system	
are	theoretically	investigated	from	the	energy	perspectives.	Firstly,	by	assuming	a	constant,	uniform	thermal	
loading	and	adopting	the	piston	theory,	the	panel	aeroelastic	governing	equation	is	obtained.	After	deriving	
the	panel	buckling	and	vibration	modes,	the	reduced	order	model	can	be	built	and	adopted	to	investigate	
the	system	primary	instability	in	the	modal	coordinates.	Then,	introducing	the	modal	damping	coefficients	
ratio	 <i>η</i> > 0,	the	critical	parameters	of	the	panel	flutter	oscillation	are	theoretically	evaluated	based	on	the	
on-conservative	energy	balance	principle,	 thus	 the	system	instability	characteristics	can	be	investigated.	
The	results	show	that	the	system	oscillatory	and	static	buckling	instability	characteristics	are	significantly	
regulated	by	the	thermal	loading	and	modal	damping.	For	the	oscillatory	instability,	there	exists	the	damping	
paradox,	 which	 is	 associated	 with	 the	 system	 energy	 dissipation	 efficiency,	 and	 can	 be	 quantitatively	
evaluated	by	the	ratio	 <img src="http://www.techscience.com/files/icces/image/6.png" width="60px">.	The	system	static	buckling	instability	characteristics	is	also	affected	by	
the	modal	damping,	and	this	damping	destabilization	is	clarified	based	on	Hamiltonian	energy	conservation	
law.	The	results	agree	well	with	that	obtained	by	Routh-Hurwitz	criteria.},
DOI = {10.32604/icces.2023.010582}
}