Session: 06-03-06 Fluid-Structure, Multi-body and Wave-body Interaction VI

Paper Number: 127512

127512 - Ocean Wave Spectrum Estimation Using Wave Buoy Analogy 

The application of digital twin technology, which combines real-world measurement data with a digital model of the ship, is gaining attention in the field of structural integrity management. Considering the limited number of sensors that can be installed on a ship, the incorporation of a digital twin concept, which combines measurement data with the ship's digital design model, can play a crucial role in ensuring structural integrity management. This study presents a methodology to estimate local responses at locations where measurements are not available, utilizing both measurement and design data. To estimate the response at locations where measurements are unavailable, an algorithm is devised to decompose the response at the measured locations into directional components spanning 360 degrees. In this process, a relative Response Amplitude Operator (RAO) is introduced to transfer the response from the measurement locations to the unmeasured ones. The decomposed responses at measured locations are represented by bicubic surfaces, and the least squares method is employed to decompose the measured responses into directional components spanning 360 degrees. To validate the methodology, artificially generated pseudo-measurement data resembling real data was employed. Subsequently, the proposed methodology was validated using actual measurement data obtained from a 13,000 TEU container ship.

Presenting Author: Jae-Hyeon Son Multidisciplinary Structural Mechanics Laboratory, INHA University

Presenting Author Biography: I am Jaehyun Son, a Ph.D. student in the Department of Naval Architecture and Ocean Engineering at Inha University.

Authors:

Jae-Hyeon Son Multidisciplinary Structural Mechanics Laboratory, INHA University
Yooil Kim Multidisciplinary Structural Mechanics Laboratory, INHA University