Prof. Ignacio Iturrioz - Federal University Rio Grande do Sul (Brazil) In the present course, the topics related to Fracture Mechanics, fracto-mechanics parameter determination, size effect, and critical behavior, among others, are covered using Discrete Elements Methods.

-

1 - (3hs) Brief revision of fracture mechanics concepts I: Definition of fracture mechanics parameters, linear G, K, and non-Linear COD, J integral. cod, J. Integral. The critical distance approach of Taylor, and other bi-parametric approaches. The size effect and the concept of the brittleness number will be also presented. 2 - (3hs) Acoustic Emission Technique (AET) and the possibilities to identify damage using this information as well as when the monitored system collapse is imminent. The theoretical basis of the Discrete Element Strategies: (i) Simple Models: Bundle Model, the Stick-slip Model, The Fuse Model. 3 - (3hs) The Discrete Element Strategies: (ii) The Lattice Discrete Element Method. (iii) The numerical Method based on Peridynamics. The theoretical basis behind these methods will be presented. Comparison between the two last methods. A discussion relating to how to calibrate these models is presented. 4 - (3hs) Comparison between the two last methods. A discussion relating to how to calibrate these models is presented. Applications using the three strategies illustrate how these numerical tools could be an insight into the concepts related to the failure of systems. The examples will be defined in terms of the student profiles. 5 - (3hs) Evaluation Activity: Practical tasks, Exam, Answer questions. CLASS METHODOLOGY USED: Expositive class alternating the use of the blackboard, projections and didactic experiences. EVALUATION METHODOLOGY PROPOSED* Final concept: Exam or Final Work. *The evaluation criteria proposed could be changed to taking into account the evaluation criteria usually utilized in the University where the curse will be carry out.

In presenza

Presentazione report scritto - Presentazione orale

P.D.1-1 - Novembre

14-18 novembre