behavior of plural fictitious cracks indicating fracture process zones is simulated on an unnotched plain concrete beam during a flexural process by finite element method (FEM) using a fictitious crack model. experiments, four-point bending tests of displacement-control were carried out…
behavior of plural fictitious cracks indicating fracture process zones is simulated on an unnotched plain concrete beam during a flexural process by finite element method (FEM) using a fictitious crack model. experiments, four-point bending tests of displacement-control were carried out on unnotched 100 x 100 x 400 mm plain concrete beams, and the dis- 6 6 placement rates were 0.2 x 10- mis and 0.5 x 10- mis at the loading point. Comparison of the experimental results and the analytical results indicates that each of the observed plural cracks corresponds to a predicted crack, depth of which is larger than 20 mm from the concrete surface to tious crack tip. Uniaxial tension tests of unnotched plain concrete mens were also carried out to obtain a tension softening curve. tests, some knowledge of the most suitable test method is obtained.