Consistent Higher-Order Dynamic Equations for Soft-Core Sandwich Beams
作者： Vladimir S. Sokolinsky , Steven R. Nutt
DOI: 10.2514/1.2742
关键词: Numerical analysis 、 Core (optical fiber) 、 Beam (structure) 、 Finite difference method 、 Nonlinear system 、 Mechanics 、 Mathematics 、 Discretization 、 Boundary value problem 、 Equations of motion 、 Geometry
摘要: The consistent higher-order dynamic equations and the corresponding continuity boundary conditions for sandwich beams with a transversely flexible core are derived, nonlinear acceleration fields in taken into account. A discretized formulation based on an efficient implicit finite difference scheme is presented numerically validated. analysis reveals that magnitudes of normal stresses between face sheets increase dramatically at boundaries beam, whereas values remain level response to quasi-static loading through span, including points application localized loads. present work provides accurate tool subject loads arbitrary type, practical case excitation.
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sci-hub.se 参考文章(18)
Vladimir S. Sokolinsky, Hubertus F. von Bremen, John J. Lesko, Steven R. Nutt, Higher-order free vibrations of sandwich beams with a locally damaged core International Journal of Solids and Structures. ,vol. 41, pp. 6529- 6547 ,(2004) , 10.1016/J.IJSOLSTR.2004.05.059
ARTHUR S. BENSON, J. MAYERS, General instability and face wrinkling of sandwich plates - Unified theory and applications. AIAA Journal. ,vol. 5, pp. 729- 739 ,(1966) , 10.2514/3.4054
Y. Frostig, M. Baruch, O. Vilnay, I. Sheinman, High‐Order Theory for Sandwich‐Beam Behavior with Transversely Flexible Core Journal of Engineering Mechanics. ,vol. 118, pp. 1026- 1043 ,(1992) , 10.1061/(ASCE)0733-9399(1992)118:5(1026)
Alf Egil Jensen, Fridtjov Irgens, Thickness vibrations of sandwich plates and beams and delamination detection Journal of Intelligent Material Systems and Structures. ,vol. 10, pp. 46- 55 ,(1999) , 10.1177/1045389X9901000106
Vladimir S. Sokolinsky, Hubertus F. Von Bremen, J. André Lavoie, Steven R. Nutt, Analytical and Experimental Study of Free Vibration Response of Soft-core Sandwich Beams Journal of Sandwich Structures and Materials. ,vol. 6, pp. 239- 261 ,(2004) , 10.1177/1099636204034634
Vladimir S. Sokolinsky, Steven R. Nutt, Yeoshua Frostig, Boundary Condition Effects in Free Vibrations of Higher-Order Soft Sandwich Beams AIAA Journal. ,vol. 40, pp. 1220- 1227 ,(2002) , 10.2514/2.1774
Mijia Yang, Pizhong Qiao, Higher-order impact modeling of sandwich structures with flexible core International Journal of Solids and Structures. ,vol. 42, pp. 5460- 5490 ,(2005) , 10.1016/J.IJSOLSTR.2005.02.037
C. L. Dym, I. H. Shames, H. Saunders, Energy and Finite Element Methods in Structural Mechanics ,(1985)
Y. Frostig, M. Baruch, Free Vibrations Of Sandwich Beams With A Transversely Flexible Core: A High Order Approach Journal of Sound and Vibration. ,vol. 176, pp. 195- 208 ,(1994) , 10.1006/JSVI.1994.1368
Tongan Wang, Vladimir S. Sokolinsky, Shankar Rajaram, Steven R. Nutt, Assessment of sandwich models for the prediction of sound transmission loss in unidirectional sandwich panels Applied Acoustics. ,vol. 66, pp. 245- 262 ,(2005) , 10.1016/J.APACOUST.2004.08.005