Recent progress in the development and application of the ISUM plate element is highlighted with a particular focus on its application to the progressive collapse analysis of a ship hull structure. The plate element is characterized by idealized shape functions for defection based on buckling collapse mode and a simple procedure for element formulation similar to that for standard displacement-based finite elements. The formulation of the plate element under in-plane loads is presented, and then the plate element and the plate-stiffener combination model are applied to the progressive collapse analysis of a hull-girder cross section and double bottom structure. The development of a total system for motion/collapse analysis of a whole ship in waves is also presented. The effectiveness of these ISUM models is demonstrated.
- Ocean, Offshore and Arctic Engineering Division
Collapse Analysis of Ship Hull Girder in Waves Using Idealized Structural Unit Method
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Fujikubo, M, Iijima, K, Pei, Z, & Ko, HHH. "Collapse Analysis of Ship Hull Girder in Waves Using Idealized Structural Unit Method." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 9: Prof. Norman Jones Honoring Symposium on Impact Engineering; Prof. Yukio Ueda Honoring Symposium on Idealized Nonlinear Mechanics for Welding and Strength of Structures. Busan, South Korea. June 19–24, 2016. V009T13A012. ASME. https://doi.org/10.1115/OMAE2016-54494
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