Abstract
Nonlinear finite element techniques based on either a linear description of stress-strain relationships of concrete and the failure criterion described in reference [3] or the nonlinear model of concrete behaviour described in references [2] and [3], have been used to analyse plain concrete structural forms subjected to a wide range of boundary conditions. The analysis based on the use of the nonlinear model of concrete has been found to yield the most realistic predictions of strutural response which correlate very closely with published experimental data. In addition, it has been found that the post-ultimate strength behaviour of concrete under compressive states of stress has no effect on the overall structural behaviour for the cases investigated.
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