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Brodogradnja : An International Journal of Naval Architecture and Ocean Engineering for Research and Development, Vol. 72 No. 1, 2021.

Original scientific paper

https://doi.org/10.21278/brod72104

SLAMMING IMPACT ACCELERATIONS ANALYSIS ON SMALL HIGH SPEED PASSENGER CRAFTS

Faisal Ikram Bin Abd Samad ; School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia; Malaysian Institute of Marine Engineering Technology, Universiti Kuala Lumpur, 32200 Lumut, Perak, Malaysia
Mohd Yuzri Mohd Yusop ; Malaysian Institute of Marine Engineering Technology, Universiti Kuala Lumpur, 32200 Lumut, Perak, Malaysia
Nik Mohd Ridzuan Shaharuddin orcid id orcid.org/0000-0001-5007-8787 ; Marine Technology Center, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia; School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia
Nasrudin Ismail ; Marine Technology Center, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia; School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia
Omar Bin Yaakob ; Marine Technology Center, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia; School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim, Malaysia

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Abstract

Small high speed passenger crafts (HSC) are commonly known for their poor seakeeping qualities. These crafts are frequently exposed to large slamming impacts and these repetitive shocks may pose danger to passengers’ safety and health. In Malaysia, small high speed passenger crafts having lengths between 7 to 9 meters are mainly used to transport tourists between popular island destinations. Evaluation on impact and vibration for this type of craft was conducted by using accelerometers attached to several locations on craft’s deck. The test was conducted at speeds ranged between 20 to 30 knots and the highest peak accelerations were recorded. The highest acceleration record during the sea trial was recorded at 4.22 g and the average acceleration measure is 2.20 g. Apart from this test, evaluation on effectiveness of the current foam seat typically used in this craft were evaluated using Dynamic Response Index (DRI) and results have shown that the seat is less efficient when impact reaches more than 1g at speeds of more than 20 knots. It is concluded that safety measures such as the use of more efficient suspension seat and limiting the operational speed need to be taken into consideration.

Keywords

Small high speed passenger crafts; slamming impacts; vertical accelerations Dynamics Response Index (DRI)

Hrčak ID:

255044

URI

https://hrcak.srce.hr/255044

Publication date:

1.3.2021.

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