Shellfrat - A computational system/code for analysis of Part-Cracked Surface Shell Structures.
DOI:
https://doi.org/10.5433/1679-0375.2000v21n4p9Keywords:
finite element, shell structures, cracks, stress intensity factor, constant use.Abstract
This work presents the SHELLFRAT computational system, based on the Finite Element Method for analysis of part-cracked surface shell structure. The structure is modeled by shell elements and the crack is simulated by spring elements which represent cracks with variable shapes, directions and depths. The system can process elastic or elastic-plastic analyses, considerations in mixed mode fracture, simulate the propagation of the cracks due to constant use and anticipate the lifetime of the structure. As a result of the analysis, the tension intensity factors are evaluated, as well as the integral J, the COD-crack opening displacement, final crack geometry and number of cycles of load.
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