Abstract
The paper describes a range of lower-order element formulations that can be applied to both elastic and elasto-plastic large-strain elements. For plane-strain analysis, this process involves four-noded quadrilaterals while the enhancements involve incompatible modes or enhanced strains. One particular new formulation can be considered as either a “co-rotational approach” or a modified form of “Biot stress procedure”.
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Communicated by S. N. Atluri, 18 August 1995
Dedicated to J. C. Simo
Some of the concepts that are described in this paper evolved as a result of a sabbatical visit to Imperial College by Professor Peter Wriggers. We would like to thank Professor Wriggers for his important contributions.
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Crisfield, M.A., Moita, G.F., Lyons, L.P.R. et al. Enhanced lower-order element formulations for large strains. Computational Mechanics 17, 62–73 (1995). https://doi.org/10.1007/BF00356479
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DOI: https://doi.org/10.1007/BF00356479