Numerical analysis of dynamic response of jacket structures subject to slamming forces by breaking waves

• Published in: International journal of naval architecture and ocean engineering Vol. 9; no. 4; pp. 404 - 417
• Main Authors: Woo, Chanjo, Chun, Insik, Navaratnam, Christy Ushanth, Shim, Jaeseol
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2017; Elsevier; 대한조선학회
• Subjects: Breaking wave; Dynamic analysis; Framed jacket structures; Lumped mass method; Slamming force; 조선공학; Slamming force; Framed jacket structures; Breaking wave; Lumped mass method; Dynamic analysis
• ISSN: 2092-6782; 2092-6790
• DOI: 10.1016/j.ijnaoe.2016.11.005

The present study numerically analyzed the dynamic behavior of 3D framed structures subject to impulsive slamming forces by violent breaking waves. The structures were modeled using multiple lumped masses for the vertical projections of each member, and the slamming forces from the breaking waves were concentrated on these lumped masses. A numerical algorithm was developed to properly incorporate the slamming forces into a dynamic analysis to numerically determine the structural responses. Then, the validity of the numerical analysis was verified using the results of an existing hydraulic experiment. The numerical and experimental results for various model structures were generally in good agreement. The uncertainties concerning the properties of the breaking waves used in the verification are also discussed here.