Paper Title: Analysis of Dynamic Stress Intensity Factors for Cracked Stiffened Plates Based on Extended FE Method
Y Peng, Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, China
P Yang, Key Laboratory of High Performance Ship Technology of Ministry of Education (Wuhan University of Technology), and Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, China
The dynamic stress intensity factors (DSIFs) for cracked stiffened plates considering the actual boundary conditions in ship structures are analyzed by the extended finite element method (XFEM). The sensitivity of numerical results with respect to mesh size and time step is discussed. Some other influential parameters including stiffener height, crack location and crack length are also analyzed. The numerical results show that the convergence is affected by mesh size and time step. By using XFEM, singular elements are not needed at the crack front and moderately refined meshes can achieve good accuracy. The height of the stiffener and crack location significantly effect DSIFs, while the crack length slightly influences the DSIFs.
Transactions RINA, Vol 162, Part A1, International Journal Maritime Engineering, Jan - Mar 2020
DOI No: 10.3940/rina.ijme.2020.a1.547
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