Scaling Effects in the Impact Response of Graphite-Epoxy Composite Beams 891014
In support of crashworthiness studies on composite airframes and substructure, an experimental and analytical study was conducted to characterize size effects in the large deflection response of scale model graphite-epoxy beams subjected to impact. Scale model beams of 1/2, 2/3, 3/4, 5/6, and full scale were constructed of four different laminate stacking sequences including unidirectional, angle ply, cross ply, and quasi-isotropic. The beam specimens were subjected to eccentric axial impact loads which were scaled to provide homologous beam responses. Comparisons of the load and strain time histories between the scale model beams and the prototype should verify the scale law and demonstrate the use of scale model testing for determining impact behavior of composite structures. The nonlinear structural analysis finite element program DYCAST (DYnamic Crash Analysis of STructures) was used to model the beam response. DYCAST analysis predictions of beam strain response are compared to experimental data and the results are presented.
Citation: Jackson, K. and Fasanella, E., "Scaling Effects in the Impact Response of Graphite-Epoxy Composite Beams," SAE Technical Paper 891014, 1989, https://doi.org/10.4271/891014. Download Citation
Author(s):
Karen E. Jackson, Edwin L. Fasanella
Affiliated:
U.S. Army Aviation Research and Technology Activity Langley Research Center Hampton, VA, Planning Research Corp. Hampton, VA
Pages: 16
Event:
General Aviation Aircraft Meeting and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Scale models
Finite element analysis
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