Crack Propagation Analysis Tool for 3D Crack Simulation: A Simulation App Case Study
Abstract: This 2 hour course will provide instructions for using the Crack Propagation Analysis Tool (CPAT) to simulate 3D crack growth at a fastener hole in a fatigue test specimen. Residual stresses due to cold-working of the hole are taken into account. CPAT provides an easy-to-use interface which significantly reduces the manual effort involved in complex crack growth simulations using the finite element method. Finite element solutions are computed using the StressCheck solver, renowned in the aerospace finite element analysis community for extracting high quality stress intensity factors (SIFs) for complex parts and assemblies.
Originally presented as a training course at the 2017 ASIP conference in Jacksonville, FL.
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“A screening of existent commercial and non-commercial tools was carried out in respect to their fracture mechanics capabilities, their design abilities, implementation as well as their complexity. Although, there are many software possibilities, only those within the reach of the author were evaluated. This resulted in the selection of the commercial tool StressCheck®. The assessment of crack propagation on compact tension and two stringer specimens governed by the Paris and Forman regimes was satisfactory compared with experimental results using the material data from simple standard specimens.”
Lloren Llopart Prieto (EADS)Doctoral Thesis, "Modelling and analysis of crack turning on aeronautical structures"