Issue 45

G. Gomes et alii, Frattura ed Integrità Strutturale, 45 (2018) 67-85; DOI: 10.3221/IGF-ESIS.45.06

Figure 4: (a) BEMLAB2D GUI lay-out; (b) Dialog for crack growth analysis.

Figure 5: Functionality hierarchy interface BEMLAB2D.

BemCracker2D Program The BemCracker2D program is based on our previous work [17, 18], with respect to the standard BEM modelling (displacement equation and continuous quadratic elements) and the incremental analysis strategy due to Aliabadi [11], with respect to the traction equation for crack modelling. BemCracker2D takes advantage of OOP and interprets the attributes, or data generated in the BEMLAB2D code as objects, and properly assigns to each method the form specific classes sorting out the complex data structure that exists in the modelling process. It also assigns characteristics and abstract behaviors. This separation between data and methods grouping is known as encapsulating, a key concept of OOP [19]. Tab. 1 shows the main concepts of OOP.

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