Abstract
dc:description.abstractThe postbuckling failure of square composite plates with central holes is analyzed numerically and experimentally. The particular plates studied have stacking sequences of [± 45/0/90]₂₅, [± 45/02]₂₅, [± 45/06]₅. and [± 45]₄₅. A simple plate geometry, one with a hole diameter to plate width ratio of 0.3 , is considered. Failure load, failure mode, and failure locations are predicted numerically by using the finite-element method. The predictions are compared with experimental results. In the experiments in order to be accommodated by the test fixture it is necessary for the plates to be slightly larger than the analYSis region, extending somewhat beyond the supports. The region outside the supports is included in the numerical study. It is shown that not considering these regions can lead to erroneous numerical predictions. In numerical failure analysis the interlaminar shear stresses, as well as the inplane stresses, are taken into account. By comparing the interlaminar shear stress calculations from the finite-element method with analytical results for simple cases, a solid foundation for interlaminar shear stress calculation is established.
Degree
thesis:*- Name thesis:degree_name
- Ph. D.
- Level thesis:degree_level
- doctoral
- Discipline thesis:degree_discipline
- Engineering Mechanics
- Department dc:contributor.department
- Engineering Mechanics
- Grantor dc:publisher
- Virginia Tech
- Year dc:date.issued
- 1991
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Lee, Ho Hyung
- Chair dc:contributor.committeechair
-
- Hyer, Michael W.
- Committee members dc:contributor.committeemember
-
- Reddy, Junuthula N.
- Librescu, Liviu
- Plaut, Raymond H.
- Griffin, O. Hayden Jr.
- Gurdal, Zafer
Rights
dc:rights- Statement dc:rights
-
- In Copyright
- Licence dc:rights.uri
- Language dc:language.iso
- en
Identifiers
dc:identifier.*- Dc Identifier Other
- etd-10022007-145159
- OAI identifier oai:identifier
- oai:vtechworks.lib.vt.edu:10919/39516