PSI - Issue 5

Jung Min Sohn et al. / Procedia Structural Integrity 5 (2017) 943–950 Aditya Rio Prabowo et al. / Structural Integrity Procedia 00 (2017) 000 – 000

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Similar tendency is found on the acceleration of the bottom structure during penetration of the conical indenter. For time range between 0 – 0.4 s, the magnitude of the acceleration was found significantly higher for the Position 2 than the Position 1. Based on these structural responses, besides impact target, position of the indenter during grounding can deliver significantly differences. In terms of Position 2 resultant force, the initial contact between indenter and structure was found remarkable with three peak points being produced in time range 0 – 0.1 s. Distinction was spotted in penetration of the Position 1 that peak point of the force magnitude continued to decrease. Nevertheless, similarity was observed for both Positions 1 and 2 that in the moment of crushing process was begun on the T intersection and X-interaction (intersection of center girder and transverse floor), the bottom structure experienced significant increment of the force than penetration in other locations which without intersection. This study presented a material preparation and analysis simulation for an impact phenomenon, namely ship grounding. The study was successfully conducted by numerical method and results were discussed. The internal energy was presented to estimate energy magnitude in crushing of the involved components of the bottom structure in grounding. Tendency of this response provided good correlation with damage extent after indenter’s penetration. The force and acceleration were discussed to measure influence of the indenter range to the occurred magnitude tendency, which was varied based its relative position to the target. Grounding process during the indenter was completely parallel with the target (Position 2) produced earlier contact and larger magnitude (resultant force) in the initial contact. The acceleration during the indenter was set lower than the bottom structure in the Position 1 being overwhelmed by response of other position. The structure in this grounding model experienced lower fluctuation than grounding with the indenter in parallel position to the target. Acknowledgements This work was successfully published with the grant from BK21 plus MADEC Human Research Development Group, South Korea. AbuBakar, A., Dow, R.S., 2013. Simulation of Ship Grounding Damage using the Finite Element Method. International Journal of Solids and Structures 50, 623-636. Alsos, H.S., Amdahl, J., 2007. On the Resistance of Tanker Bottom Structures during Stranding. Marine Structures 20, 218-237. Alsos, H.S., Amdahl, J., 2009. On the resistance to penetration of stiffened plates, Part I - Experiments. International Journal of Impact Engineering 36, 799-807. ANSYS, 2013. ANSYS LS- DYNA User’s Guide . Ansys, Inc., Pennsylvania. Bae, D.M., Prabowo, A.R., Cao, B., Zakki, A.F., Haryadi, G.D., 2016a. Study on Collision Between Two Ships Using Selected Parameters in Collision Simulation. Journal of Marine Science and Application 15, 63-72. Bae, D.M., Prabowo, A.R., Cao, B., Sohn, J.M., Zakki, A.F., Wang, Q., 2016b. Numerical Simulation for the Collision Between Side Structure and Level Ice in Event of Side Impact Scenario. Latin American Journal of Solids and Structures 13, 2991-3004. Germanischer Lloyd, 2003. Development of Explanatory Notes for Harmonized SOLAS Chapter II-1 . International Maritime Organization (IMO) . IOPCF, 2005. Annual Report 2005 . International Oil Pollution Compensation Funds, London. Lützen, M., Simonsen, B.C., 2003. Grounding Damage to Conventional Vessels. World Maritime Technology Conference, San Francisco. Nguyen, T.H., Amdahl, J., Leira, B.J., Garrѐ, L., 2011. Understanding Ship - Grounding Events. Marine Structures 24, 551-569. Prabowo, A.R., Bae, D.M., Sohn, J.M., Zakki, A.F., 2016a. Evaluating the Parameter Influence in the Event of a Ship Collision based on the Finite Element Method Approach. International Journal of Technology 4, 592-602. Prabowo, A.R., Bae, D.M., Sohn, J.M., Cao, B., 2016b. Energy Behavior on Side Structure in Event of Ship Collision subjected to External Parameters. Heliyon 2, e00192. Prabowo, A.R., Bae, D.M., Sohn, J.M., 2017a. Behavior Prediction of Ship Structure due to Side Impact Scenario by Dynamic-Nonlinear Finite Element Analysis. Applied Mechanics and Materials 862, 253-258. Prabowo, A.R., Bae, D.M., Sohn, J.M., Zakki, A.F., Cao, B., 2017b. Development in Calculation and Analysis of Collision and Grounding on Marine Structures and Ocean Engineering. Journal of Aquaculture and Marine Biology 5, 00116. Prabowo, A.R., Bae, D.M., Sohn, J.M., Zakki, A.F., Cao, B., Wang, Q., 2017c. Analysis of Structural Behavior during collision Event accounting for Bow and Side Structure Interaction. Theoretical and Applied Mechanics Letters 7, 6-12. 5. Conclusions References