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Low velocity impact analysis with NASTRANA nonlinear elastic force-displacement relationship is used to calculate the transient impact force and local deformation at the point of contact between impactor and target. The nonlinear analysis and transfer function capabilities of NASTRAN are used to define a finite element model that behaves globally linearly elastic, and locally nonlinear elastic to model the local contact behavior. Results are presented for two different structures: a uniform cylindrical rod impacted longitudinally; and an orthotropic plate impacted transversely. Calculated impact force and transient structural response of the targets are shown to compare well with results measured in experimental tests.
Document ID
19910064242
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Trowbridge, D. A.
(Analex Corp. Fairview Park, OH, United States)
Grady, J. E.
(Analex Corp. Fairview Park, OH, United States)
Aiello, R. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Computers and Structures
Volume: 40
Issue: 4, 19
ISSN: 0045-7949
Subject Category
Structural Mechanics
Accession Number
91A48865
Distribution Limits
Public
Copyright
Other

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