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All Journal Applied Science and Technology on Naval Engineering
Wiwin Sulistyawati
UPN Veteran Jakarta
Energy Engineering Mechanical Engineering Other

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Analisis Stabilitas Fasilitas Loading Unloading Crane dan Ship Loader pada Kapal Konversi Jihad Pramayoga; Wiwin Sulistyawati; Amir Marasabessy
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11770

Abstract

Kapal MV. Ratu Damai, yang awalnya dirancang sebagai bulk carrier, telah mengalami konversi menjadi Floating Loading Facility (FLF). Konversi ini melibatkan penambahan struktur dan peralatan bongkar muat yang signifikan, yang berpotensi memengaruhi stabilitas kapal secara keseluruhan. Penelitian ini bertujuan untuk menganalisis stabilitas MV. Ratu Damai pasca konversi, dengan fokus pada dampak penambahan alat bongkar muat terhadap parameter stabilitas statis dan dinamis. Metode yang digunakan meliputi perhitungan stabilitas berdasarkan data dimensi kapal, bobot, dan posisi pusat gravitasi (KG) sebelum dan sesudah konversi, serta simulasi berbagai kondisi pemuatan dan operasional. Hasil analisis diharapkan dapat mengidentifikasi perubahan karakteristik stabilitas, menilai kepatuhan terhadap regulasi maritim yang berlaku, dan memberikan rekomendasi untuk memastikan keselamatan operasional kapal.
Studi Kekuatan Struktur Deck Crane Barge Terhadap Beban Knuckle Boom Crane dan Hydraulic Crane dengan Pendekatan Metode Elemen Hingga Muhammad Aysar Santoso Santoso; Wiwin Sulistyawati
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11795

Abstract

This study aims to evaluate the structural strength of a crane barge deck under the loading of two types of cranes: the Knuckle Boom Crane and the Hydraulic Crane. The evaluation is conducted using the numerical Finite Element Method (FEM) with the assistance of Maxsurf Multiframe software. The main focus of the analysis is to assess the effects of crane type, boom position variation (working radius), and deck plate thickness on stress distribution and bending moment in the deck structure. The structural model used is based on an actual design of a crane barge from PT Baramulti, with dimensions adjusted to the limitations of the student version of the software. Loading scenarios were applied incrementally from 0 to 30 tons, and the results were assessed by comparing them against allowable stress limits set by the Indonesian Classification Bureau (BKI). The simulation results show that large-capacity cranes, such as the 60T Knuckle Boom Crane, generate stress levels exceeding BKI safety limits. However, after structural reinforcements were applied—such as the addition of stiffeners, increasing deck plate thickness, and changing the material to AH36—the maximum stress was reduced by approximately 26%, restoring structural safety under loads up to 20 tons. This research highlights the importance of structural design that considers crane type, actual load conditions, and material specifications to ensure the operational safety of crane barges.
Analysis and Structural Improvement of the KMP Portlink III Bow under Collision Loads Using the Finite Element Method Yeremia Parasian Christover Manurung; Wiwin Sulistyawati
Applied Science and Technology on Naval Engineering Vol 4 No 2 (2026)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v4i2v2.04

Abstract

Ship collision accidents can cause severe damage to the bow structure, as it is the first part of the vessel to receive impact loads. This study aims to analyze the structural response of the bow of KMP Portlink III under collision loads and to evaluate the effectiveness of adding carlings in improving structural strength. The bow structure was modeled using Autodesk Fusion, while the numerical analysis was carried out using Autodesk Inventor based on the Finite Element Method (FEM). The analysis was conducted on four design configurations, namely the original design, horizontal carling, vertical carling, and combined carling, with loading variations of 100%, 104%, 106%, 108%, and 110% of the initial collision load of 1,191,900 N. The evaluated parameters included Von Mises stress and safety factor. The results indicate that increasing the collision load leads to higher Von Mises stress and lower safety factor values. The addition of carlings effectively reduced the maximum stress and increased the safety factor, with the combined carling design providing the best structural performance in improving the bow's resistance to collision loads. Keywords: collision load, Finite Element Method, Von Mises stress, safety factor, carling.
Co-Authors Amir Marasabessy Jihad Pramayoga Muhammad Aysar Santoso Santoso Yeremia Parasian Christover Manurung