Mechanical Engineering Faculty Research
Title
Dynamic Pulse Buckling of Composite Shells Subjected to External Blast
Document Type
Article
Publication Date
Summer 6-2010
Abstract
Dynamic pulse buckling of woven E-Glass/Vinyl Ester and laminated E-Glass/Epoxy cylindrical shells subjected to uniform overpressure and asymmetric pressure pulse (side-on explosion) were examined. The solutions for the radial shell deformations were represented by Mathieu differential equations. The dynamic instability of the shells was determined from a Mathieu stability diagram. It was found that the stability of the shells depended on lay-up, aspect ratio as well as impulse distribution. The stable vibration response of the shells with side-on explosion compared well with finite element solutions using a Dynamic, Implicit analysis in ABAQUS Standard. First-ply failure of the woven E-Glass/Vinyl Ester shell with side-on explosion was predicted using a modified Hashin–Rotem failure criterion. It was shown that the thinner woven E-Glass/Vinyl Ester shells were more likely to fail by dynamic instability, whereas the thicker woven E-Glass/Vinyl Ester shells were more likely to fail by first-ply failure.
Publication Title
Composite Structures
Volume
92
Issue
7
First Page
1716
Last Page
1727
Recommended Citation
Hoo Fatt, Michelle S. and Pothula, Sunil G., "Dynamic Pulse Buckling of Composite Shells Subjected to External Blast" (2010). Mechanical Engineering Faculty Research. 264.
https://ideaexchange.uakron.edu/mechanical_ideas/264