I am trying to carry-out a simulation for measuring concrete toughness (crack intensity) of a notched beam under three-point bending.
I followed a reference paper which has experimental results to verify the ANSYS simulation. According to that reference, a beam of 350x76x38mm, having a notch to depth ratio of 0.4, (notch height 30.4mm) was subjected to loading under displacement control rate of 0.06mm/min in three-point bending. The output values with different respective Young’s modulus values are shown in the attached image.
I have made the model and I have some queries, need some help on the following;
(1). How can I model crack propagation in ANSYS workbench?
(2). The model (A) is I am able to solve but I can not get the correct resultant values according to or near to those mentioned in the reference. Must be something I am missing, I feel that the applied load is maybe different than that of the experimental work. But how could I calculate how much displacement shall I apply in the model, as the displacement rate is mentioned in the experimental work?
(3). The model (B) I tried to design three-point having a span length of 304 mm. But somehow I feel that the design is not correct. Something is wrong with the bottom points which I have designed in the model (B) because of which I can not get the model to reach the solution.
I would like to request for help and guidance on the said problem.
Attachments are as follows,
The model file is attached here at this link,