47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR&amp;gt; 14th AIAA/ASME/AHS Adap 2006
DOI: 10.2514/6.2006-1745
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Dynamic Snap Through of Thin-Walled Structures by a Reduced Order Method

Abstract: The goal of this investigation is to further develop nonlinear modal numerical simulation methods for application to geometrically nonlinear response of structures exposed to combined high intensity random pressure fluctuations and thermal loadings. The study is conducted on a flat aluminum beam, which permits a comparison of results obtained by a reduced-order analysis with those obtained from a numerically intensive simulation in physical degrees-of-freedom. A uniformly distributed thermal loading is first a… Show more

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Cited by 8 publications
(4 citation statements)
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“…10 The modal basis consisted of normal modes of the stress-free (unheated) model. This "cold" modes approach resulted in accurate prediction of the dynamic snap-through of the beam in a post-buckled state.…”
Section: Introductionmentioning
confidence: 99%
“…10 The modal basis consisted of normal modes of the stress-free (unheated) model. This "cold" modes approach resulted in accurate prediction of the dynamic snap-through of the beam in a post-buckled state.…”
Section: Introductionmentioning
confidence: 99%
“…3 The models have proven accurate when compared to full-order analysis while providing orders-ofmagnitude reductions in computation time for the acoustic loading problem. In recent work [8][9][10][11] it was shown that a single structural basis composed of room temperature normal modes can provide an accurate NLROM for predicting acoustic response at elevated temperatures. Additional linear terms that are functions of temperature amplitude and distribution were added to the NLROM to account for the temperature effects.…”
Section: Introductionmentioning
confidence: 99%
“…Under so high intensity combined thermoacoustic loads, skin panels of hypersonic vehicles can have strong nonlinear characteristics, which will reduce the fatigue life of skin panels. Random response of thin wall structures to combined thermo-acoustic loads are investigated using finite element method (Mei et al, 2000;Dhainaut et al, 2003;Przekop and Rizzi, 2007;Sha et al, 2012aSha et al, , 2012bSha et al, , 2013, the nonlinear snapthrough characteristics of thin wall structures to combined thermo-acoustic loads are pointed out. Random response and fatigue life of panels subjected to acoustic and thermal loads are also investigated using numerical simulation (Przekop et al, 2003;Radu et al, 2004;Yang, 2005;Sha et al, 2012aSha et al, , 2013.…”
Section: Introductionmentioning
confidence: 99%