Collision Tests
 
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Collision Tests

      5/31/1999

The Ship Structural Mechanics Laboratory (SSML) of the Naval Architecture and Ocean Engineering of Pusan National University (Korea) develops methods useful for strength analysis and structural design of marine structures. The Laboratory has facilities for numerical and experimental studies which include mechanical testing equipment (static and dynamic loading machines) and high-speed computers with non-linear finite element programmes.
Professor Jeom Kee Paik, who directs various research projects, has recently undertaken studies of structural crashworthiness of double skinned ship side structures colliding with a ship bow. A total of six double skinned structural models, namely four mild steel models and two aluminum alloy models, have been tested in a quasi-static loading condition, with varying the plate thickness and the initial colliding location. The mild steel models were designed to represent side or bottom structures typical of double hull tankers of LNG / LPG carriers.

brittle.jpg (27430 bytes)Photo of the AL-4-OW Model after Testing: Brittle Failure is Seen

The aluminum alloy models were designed to examine the internal mechnaics in collision and stranding of aluminum alloy hulls in future designs. An indentor with a conical shape similar to the bulbous bow of a colliding vessel was used for the tests for all models. A paper "On the Rational Design of Double Hull Tanker Structures against Collision" will be presented at the 1999 SNAME Annual Meeting, Baltimore (USA) in November 1999 (J.K. Paik, J.Y. Chung, I.H. Choe, A.K. Thayamballi, P.T. Pedersen and G. Wang)
For more information and pictures on the strength tests for various structural models recently undertaken in the laboratory : SSML


 


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