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Global buckling and face wrinkling response of sandwich panels under transient loads

: Hohe, J.; Librescu, L.; Oh, S.Y.

American Institute of Aeronautics and Astronautics -AIAA-, Washington/D.C.; American Society of Mechanical Engineers -ASME-; American Society of Civil Engineers -ASCE-, New York/N.Y.; American Helicopter Society -AHS-; American Society for Composites -ASC-:
46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 13th AIAA/ASME/AHS Adaptive Structures Conference, 7th AIAA Non-Deterministic Approaches Forum, 6th AIAA Gossamer Spacecraft Forum, 1st AIAA Multidisciplinary Design Optimization Specialist Conference 2005. A collection of technical papers : Austin, Texas, 18 - 21 April 2005
Reston, Va.: AIAA, 2005
ISBN: 1-563-47728-9
Paper 2005-2100
Structures, Structural Dynamics and Materials Conference <46, 2005, Austin/Tex.>
Adaptive Structures Conference <13, 2005, Austin/Tex.>
Non Deterministic Approaches Forum <7, 2005, Austin/Tex.>
Gossamer Spacecraft Forum <6, 2005, Austin/Tex.>
Multidisciplinary Design Optimization Specialist Conference <1, 2005, Austin/Tex.>
Conference Paper
Fraunhofer IWM ()
Sandwich-Bauweise; Schalentheorie; kompressibler Kern; Instabilität; dynamisches Verhalten; transientes Verhalten

The present study is concerned with the transient dynamic response of sandwich panels subjected to rapidly applied loads. Special interest is directed to the effect of the transverse compressibility of sandwich structures with weak core. For the analysis, a previously presented higher-order sandwich shell theory of the v. Kármán type is utilized. The structural problem is solved by means of an extended Galerkin procedure in conjunction with an explicit, variable step Runge-Kutta scheme for the transient problem. In a number of examples dealing with the transient dynamic response of sandwich structures under rapid loading conditions, it is observed that the transverse core compressibility has distinct effects even on the overall response, if face wrinkling occurs during the loading history.