Free Vibrations Of Sandwich Beams With A Transversely Flexible Core: A High Order Approach

Frostig, Y.; Baruch, Menahem

doi:10.1006/jsvi.1994.1368

Cited by 151 publications

(111 citation statements)

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“…Also it should be added that HSAPT theory divides into two displacement and mixed formulation theories which is different in the formulation of the problem. Frostig and baruch (Frostig & Baruch, 1994) investigated on free vibrations of sandwich beams with a transversely flexible core. The analysis presented embodies a general rigorous approach including higher order effects owing to the non-linearity of the displacement fields of the core caused by its flexibility in the vertical direction.…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 99%

Dynamic Analysis of Maneuvering Flexible Spacecraft Appendage Using Higher Order Sandwich Panel Theory

Azimi

Shahravi

Joubaneh

2016

Lat. Am. j. solids struct.

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This paper is devoted to the vibration of rotating flexible spacecraft. The maneuver of the spacecraft is modeled by a constant torque input acting on the hub. For the first time in this paper the equations of motion of flexible spacecraft are derived based on higher order sandwich panel theory (HSAPT). Hamilton's principle is used for driving the governing partial differential equations of motion. The generalized differential quadrature method (GDQ) is utilized to solve the partial differential equations of motion. The effect of different parameters on vibration of rotating flexible spacecraft appendage is investigated. It is also investigated the effect of these parameters on natural frequencies. The result of HSAPT and Euler Bernoulli theory is compared with each other. To show the accuracy the natural frequencies of recent paper are compared with the literature.

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Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 99%

Dynamic Analysis of Maneuvering Flexible Spacecraft Appendage Using Higher Order Sandwich Panel Theory

Azimi

Shahravi

Joubaneh

2016

Lat. Am. j. solids struct.

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“…There are many possible approaches to predict vibration behaviour of a sandwich beam, including classical sandwich theory, elastic foundation models and various higher-order theories [34,35]. Since a shear-induced effect caused by the flexibility of the core needs to be modelled, a HSAPT appears to be most appropriate [34,36,37].…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

“…Since a shear-induced effect caused by the flexibility of the core needs to be modelled, a HSAPT appears to be most appropriate [34,36,37].…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

Choi¹,

Xiong²,

Shenoi³

2009

Journal of Sound and Vibration

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A higher-order sandwich theory is implemented in conjunction with an equivalent mobility-based power flow progressive method to determine power flow for a sandwich configured floating raft vibration isolation system. The power spectrum changes in whole frequency range effectively when core materials' properties change. It is also shown that the loss factors of the sandwich configured floating raft influence the power flow transmitted to the foundation effectively in the medium-to high-frequency range and that the resonant peak cannot be avoided by increasing damping only in highfrequency ranges which is not found in floating raft isolation systems with isotropic beams. r

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“…Among various types of sandwich structure modeling approaches such as classical theory with no shear deformation (CPT), first order shear deformation theory (FOSDT), Ordinary theories (OSPT), various Higher-Order approaches, the one that is suitable for sandwich structures with metallic honeycomb core is the Higher-Order Sandwich Panel Theory (HSAPT). 2 It has long been recognized that higher order theories provide an effective solution tool for accurately and efficiently predicting the deformation behavior of sandwich structures subjected to bending loads. A review and assessment of various theories for modeling sandwich composites with application to sandwich beams can be found in some references.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Vibration Suppression of Flexible Spacecraft Using Higher-Order Sandwich Panel Theory

Azimi¹,

Shahravi²,

Fard³

2017

IJAV

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This paper presents a novel approach for the modeling and vibration suppression of a flexible spacecraft during a large angle attitude maneuver. A Higher-Order theory is used to model the elastic behavior of solar panel appendages with surface bounded piezoelectric (PZT) patches that capture the transverse shear deformation effects through the thickness of the smart sandwich panel. With the implementation of an appropriate time scales transformation technique and using Singular Perturbation Theory (SPT), the spacecraft dynamic behavior has been divided into double slow and fast subsystems. Modified Sliding Mode (MSM) and Strain Rate Feedback (SRF) control theory have been used for attitude and vibration control simultaneously by global stability proof of the overall system, while the controllers accomplished their missions in coupled rigid/flexible dynamic domain without parasitic parameter interactions. Numerical simulation assesses the benefits of the proposed approach.

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Free Vibrations Of Sandwich Beams With A Transversely Flexible Core: A High Order Approach

Cited by 151 publications

References 0 publications

Dynamic Analysis of Maneuvering Flexible Spacecraft Appendage Using Higher Order Sandwich Panel Theory

Dynamic Analysis of Maneuvering Flexible Spacecraft Appendage Using Higher Order Sandwich Panel Theory

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

Modeling and Vibration Suppression of Flexible Spacecraft Using Higher-Order Sandwich Panel Theory

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