Investigation of Longitudinal Vibrations and Slamming of a Trimaran in Regular Waves

Slamming and longitudinal vibration are two important factors during the preliminary structural design of trimarans. In order to better understand wave-induced loads of trimarans in regular waves, hydroelastic experiments were carried out to observe the wave slamming and longitudinal vibration using a segmented self-propelled model. Details of the model design and the experimental method are provided. Characteristics of the slamming pressure and the wave-induced response were measured under different wave lengths, wave heights, and sailing speeds. Strain and pressure gauges attached to the model in different locations were employed to investigate the distribution of the wave loads and pressures. The high-frequency and low-frequency components of the measured loads were separated using Fourier filter, and the influence of environment parameters on these load components were analyzed. In the high-frequency load, the effects of whipping and springing were found, and their characteristics were illustrated. Based on the experimental results obtained, some considerations for the structural design of trimarans are discussed.


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  • Accession Number: 01644667
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 29 2017 10:09AM