Technical Paper
COMPARATIVE STUDY ON FATIGUE DAMAGE ASSESSMENT OF A STRUCTURE MEMBER IN A BULK CARRIER USING VARIOUS ENVIRONMENTAL CONDITIONS
Tahun 2019
Specific design life could be identified by using fatigue
damage assessment in the structure engineering field as well as
in the maritime sector. Fatigue assessment is one of the
assessments to be conducted during review of ship structure
design. Fatigue assessment of ship structural member is mainly
conducted based on specific environmental condition. In
general, specific environmental condition, which is provided by
Classification Society rules, is a long term sea-state data of
North Atlantic Ocean. The wave scatter diagram presents the
tabulation of a long term data of sea state history in the specific
ocean. Therefore, a realistic encounter of wave scatter diagram
is essential to simulate the variation of wave loadings applied
on the ship structure in determination of fatigue design life.
Since the application of North Atlantic ocean
environmental condition is commonly used by major
Classification societies, this condition might give the
substantial deterioration on the fatigue design life of the ship
that specially operate only in specific ocean area, i.e. South
East Asia area. In this work, the wave scatter diagram of
various environmental conditions is chosen and the statistical
characteristic is compared. The wave load sequence that is
used on the fatigue damage assessment are generated by using
the concept of storm model, so that the changing nature of sea
state could be emulated as in real ocean. Fatigue damage of a
structure member of 220 meter Bulk Carriers is calculated
based on various environmental conditions.
For further information, please contact: rnd@bki.co.id.