The presence of repetitive symmetry in continua and structures allows for the modeling of a single symmetric cell. Typically, the symmetry conditions are enforced with homogeneous kinematic constraints, but these may preclude some otherwise admissible response. Also, in large deformation situations, the original symmetric boundaries can distort significantly. The objective of this work is to provide a means for explicit finite element methods to ensure periodic symmetry while resultant loads may be prescribed on the symmetric boundaries. A method is devised to determine external forces that concurrently maintain dynamic equilibrium of the system with compatible deformations at the boundaries. The method requires only internal forces and nodal positions, which are accessible in an explicit finite element formulation.
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ASME 2003 Pressure Vessels and Piping Conference
July 20–24, 2003
Cleveland, Ohio, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-1699-0
PROCEEDINGS PAPER
Periodic Symmetry for Explicit Methods for Large Deformation Twisting and Stretching
Don R. Metzger
Don R. Metzger
McMaster University, Hamilton, Ontario, Canada
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Don R. Metzger
McMaster University, Hamilton, Ontario, Canada
Paper No:
PVP2003-1913, pp. 275-282; 8 pages
Published Online:
August 13, 2008
Citation
Metzger, DR. "Periodic Symmetry for Explicit Methods for Large Deformation Twisting and Stretching." Proceedings of the ASME 2003 Pressure Vessels and Piping Conference. Computer Technology and Applications. Cleveland, Ohio, USA. July 20–24, 2003. pp. 275-282. ASME. https://doi.org/10.1115/PVP2003-1913
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