Structural Dynamic Frequency Response Using Combined Direct and Adjoint Reduced-Order Approximations

Livne, Eli; Blando, Guillermo D.

doi:10.2514/2.2084

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…With regard to loading frequencies, displacement excitation was adopted for low loading frequencies while acceleration excitation was employed for high loading frequencies. Since the types of excitation were different and frequencies were disperse, Nastran sol108 Direct Method was utilized to solve harmonic response [7], so as to obtain the stress distribution under different test conditions.…”

Section: Harmonic Response Analysis Of the Vibration Systemmentioning

confidence: 99%

Response Analysis of Fixed-frequency Vibration Endurance Test on A Certain Airplane Oil Pressure Reservoir

Zhang¹,

Zhang²,

Li³

et al. 2016

Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials

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Abstract. airplane oil pressure reservoirs are major fuel supplying parts of airplanes to have flight maneuvers. Since they are always working under alternating loadings, they are prone to produce fatigue fractures. Therefore, they will undergo vibration endurance tests in general. And the fixed-frequency vibration endurance test is commonly used in engineering. This paper has established a finite element model for the vibration test system, taken into consideration the influence of liquid fuel and introduced the fluid-solid coupling method to conduct harmonic response analysis on different excitation conditions with MSC.Nastran, thus obtaining the stress distribution under different loading conditions. Moreover, the results have been compared with the test results to verify correctness of the method, thus providing references for the improvement in structural design.

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Section: Harmonic Response Analysis Of the Vibration Systemmentioning

confidence: 99%

Response Analysis of Fixed-frequency Vibration Endurance Test on A Certain Airplane Oil Pressure Reservoir

Zhang¹,

Zhang²,

Li³

et al. 2016

Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials

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Computational and experimental studies of horizontal tail flutter suppression

Khan

Ashraf

Shehzad

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part G:

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Flutter is an extremely violent instability that may result in catastrophic failure. Thus, flutter clearance test is one of the critical phases in qualification of an aircraft's airworthiness. During design and development process of an aircraft, flutter problems were experienced on an aerodynamic surface (horizontal tail). In order to tackle the observed problem, a number of approaches to optimize the design for flutter speed were computationally and experimentally studied and evaluated. This paper presents and discusses the outcomes of these studies. A hybrid approach based on evaluations and design change constraints has been proposed to suppress the flutter of the horizontal tail.

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Combined Direct/Adjoint Reduced-Order Approximations for Design-Oriented Structural-Acoustics

Livne

Coskuner

2006

AIAA Journal

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Structural Dynamic Frequency Response Using Combined Direct and Adjoint Reduced-Order Approximations

Cited by 6 publications

References 14 publications

Response Analysis of Fixed-frequency Vibration Endurance Test on A Certain Airplane Oil Pressure Reservoir

Response Analysis of Fixed-frequency Vibration Endurance Test on A Certain Airplane Oil Pressure Reservoir

Computational and experimental studies of horizontal tail flutter suppression

Combined Direct/Adjoint Reduced-Order Approximations for Design-Oriented Structural-Acoustics

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