Low velocity impact analysis with nastran

A nonlinear elastic force-displacement relationship is used to calculate the transient impact force and local deformation at the point of contact betewen impactor and target. The nonlinear analysis and transfer function capabilities of NASTRAN are used to define a finite element model that behaves g...

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Bibliographic Details
Published inComputers & structures Vol. 40; no. 4; pp. 977 - 984
Main Authors Trowbridge, D.A., Grady, J.E., Aiello, R.A.
Format Journal Article
LanguageEnglish
Published Legacy CDMS Elsevier Ltd 1991
Elsevier Science
Subjects
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Structural and continuum mechanics
Structural Mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Finite element method
Computer program
Low speed
Elastic shock
Mechanical contact
Non linear effect
Composite material
Mechanical shock
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Summary:A nonlinear elastic force-displacement relationship is used to calculate the transient impact force and local deformation at the point of contact betewen 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 result measured in experimental tests.
Bibliography:CDMS
Legacy CDMS
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0045-7949
1879-2243
DOI:10.1016/0045-7949(91)90328-J