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CONCERN OF WATER-TRANSPORTATION MODE WHEN EXPERIENCES NUMEROUS ACCIDENTAL LOADS IS PREDICTED LIMITLESS AND ALWAYS DEMAND SUSTAINABLE ANALYSIS. IMPACT PHENOMENON RAISES AS MAIN REASON OF ENVIRONMENTAL DAMAGE, WHICH GROUNDING CONTRIBUTES IN FORM OF SHORT-TIME IMPACT AND PRODUCES MASSIVE DAMAGE ON BOTTOM STRUCTURE OF MARINE VESSELS, E.G. SHIP. IN THIS WORK, A SERIES OF NUMERICAL EXPERIMENT IS CONDUCTED WITH CONSIDERING CONTRIBUTION OF SEVERAL PARAMETERS, NAMELY IMPACT LOCATION AND SEABED TOPOLOGY ON THE TARGET OBJECT WHICH IS DETERMINED TO BE THE BOTTOM STRUCTURE OF A TANKER SHIP. THE INITIAL STAGE IS CONDUCTED TO OBTAIN VALIDATION OF NUMERICAL METHOD AND CONFIGURATION USING IMPACT TEST TO ENSURE RELIABILITY OF THE PRESENT METHODOLOGY. IN THE SECOND STAGE, PROPOSED SCENARIOS ARE CALCULATED AND OVERALL EVALUATION OF DAMAGE EXTENT IS PERFORMED TO OBSERVE RESISTANCE AND BEHAVIOUR OF THE BOTTOM STRUCTURE. STRUCTURAL CONDITION AFTER GROUNDING, RUPTURE ENERGY, AND CRUSHING FORCE ARE PRESENTED TO OBSERVE HISTORY OF GROUNDING. CONTRIBUTION OF NUMERICAL PARAMETER IN FORM OF MESHING SIZE IS PRESENTED TO PROVIDE ADEQUATE CONSIDERATION IN BOTH OF PHYSICAL AND NUMERICAL PARA-METERS. FINALLY, TENDENCY OF THE TARGET STRUCTURE IS SUMMARIZED TO PROVIDE PREDICTION OF FURTHER BEHAVIOUR DURING THE BOTTOM STRUCTURE EXPERIENCES GROUNDING WITH OTHER SCENARIO. AN ALTERNATIVE SOLUTION IN RESPECTING TIME COST IS PROPOSED AND CAN BE CONSIDERED FOR OTHER IMPACT SIMULATION.

Structural Analysis of the Double Bottom Structure During Ship Grounding by Finite Element Approach