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Scaling the Non-linear Impact Response of Flat and Curved Composite PanelsThe application of scaling laws to thin flat and curved composite panels exhibiting nonlinear response when subjected to low-velocity transverse impact is investigated. Previous research has shown that the elastic impact response of structural configurations exhibiting geometrically linear response can be effectively scaled. In the present paper, a preliminary experimental study is presented to assess the applicability of the scaling laws to structural configurations exhibiting geometrically nonlinear deformations. The effect of damage on the scalability of the structural response characteristics, and the effect of scale on damage development are also investigated. Damage is evaluated using conventional methods including C-scan, specimen de-plying and visual inspection of the impacted panels. Coefficient of restitution and normalized contact duration are also used to assess the extent of damage. The results confirm the validity of the scaling parameters for elastic impacts. However, for the panels considered in the study, the extent and manifestation of damage do not scale according to the scaling laws. Furthermore, the results indicate that even though the damage does not scale, the overall panel response characteristics, as indicated by contact force profiles, do scale for some levels of damage.
Document ID
20050203676
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Ambur, Damodar R.
(NASA Glenn Research Center Cleveland, OH, United States)
Chunchu, Prasad B.
(Eagle Aeronautics, Inc. Hampton, VA, United States)
Rose, Cheryl A.
(NASA Langley Research Center Hampton, VA, United States)
Feraboli, Paolo
(NASA Langley Research Center Hampton, VA, United States)
Jackson, Wade C.
(Army Research Lab. United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Composite Materials
Report/Patent Number
AIAA Paper 2005-2224
Report Number: AIAA Paper 2005-2224
Meeting Information
Meeting: 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Location: Austin, TX
Country: United States
Start Date: April 18, 2005
End Date: April 21, 2005
Sponsors: American Society of Civil Engineers, American Helicopter Society, Inc., American Society for Composites, American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
OTHER: 23-719-55-TD
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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