Elastic buckling of plates with reinforced circular holes by the finite element method
- Univ. of Wales, Cardiff (United Kingdom). Div. of Structural Engineering
The elastic buckling loads of square plates having central circular holes is obtained by the use of the finite element method. The circular holes are reinforced around their edges by rings having rectangular cross sections and the effects of the size of hole and the amount of reinforcement of the buckling loads are determined. The finite elements used for calculating the inplane stresses in the plate prior and the instance of buckling are based on strain assumptions and the rings are presented by exact circular beam elements. The plate elements for inplane stresses have an additional degree of freedom due to inplane rotation to make them suitable for combination with the ring elements where the corresponding rotation constitute an essential external degree of freedom. The buckling loads considered are due to uniaxial, biaxial and shearing forces applied to the edges of the plates and the amount of reinforcement necessary to restore the buckling loads to those for plates not having any holes are determined.
- OSTI ID:
- 94412
- Report Number(s):
- CONF-950116--; ISBN 0-7918-1293-6
- Country of Publication:
- United States
- Language:
- English
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