Comparative Study on Ferry Ro-Ro’s Car Deck Structural Strength by Means of Application of Sandwich Materials

Tuswan,; Zubaydi, Achmad; Budipriyanto, Agung; Sujiatanti, Septia Hardy

doi:10.5220/0008542800870096

Cited by 6 publications

(13 citation statements)

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“…The reference car deck is located parallel to the mid-body of the ship between the two bulkheads. Based on the previous sandwich application in the same model [25], the calculation of thickness configuration based on DNV-GL strength index criteria [26] results 4 mm thin faceplate and 20 mm thick core.…”

Section: Reference Modelmentioning

confidence: 99%

“…As shown in Table 3, car decks A and B exhibit higher natural frequencies compared to car deck C and existing models. The use of sandwich material can reduce the weight of the panel [25] and higher stiffness compared to the existing model. To gain more insight into the dynamic behavior of the car deck panel, modal dynamic analysis is used.…”

Section: Dynamic Response Comparison Of the Car Deck Panel Modelsmentioning

confidence: 99%

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Dynamic characteristic of partially debonded sandwich of ferry ro-ro’s car deck: a numerical modeling

et al. 2020

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The dynamic behavior of a partially debonded Ferry Ro-Ro’s sandwich car deck is investigated by using commercial finite element software ABAQUS. Debonding in the car deck model is estimated by comparing the dynamic responses of the fully intact and damaged model of the bonding condition. The influence of the debonding ratio is investigated by free vibration analysis using Lanczos iteration method. The dynamic response of the car deck model is loaded with harmonic excitation and is examined in detail. The transverse displacements, velocities, accelerations, longitudinal strains, and phase portraits are investigated in the central point of the damaged area. To evaluate the effect of inserting the spring contact element during the dynamic analysis, both debonded models with and without spring contact elements are examined. From the report, it can be concluded that the dynamic analysis which relies on the modal analysis can be used to diagnose the possibility of debonding problem in the car deck structure. The natural frequencies of the debonded model decrease due to the presence of discontinuity in the debonded region. Further, the discontinuity also creates locally concentrated deformation and significantly affects the short-term time response.

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Section: Reference Modelmentioning

confidence: 99%

Section: Dynamic Response Comparison Of the Car Deck Panel Modelsmentioning

confidence: 99%

Dynamic characteristic of partially debonded sandwich of ferry ro-ro’s car deck: a numerical modeling

et al. 2020

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“…Combining these two material characteristics creates a sandwich effect that provides a very efficient ratio of stiffness-to-weight [3,4,5], which is an important characteristic for light structures in the ship's construction [6]. In terms of the development of SPS for ship structure, several core materials have been analyzed, such as the combination of unsaturated polyester resin (UPR) with talc powder [7], bio-resin using vinyl ester and vegetable oil [8,9], UPR with a clamshell powder [10], UPR with an eggshell powder [11], epoxy resin [6], and polyurethane elastomer (PU) [12,13,14]. Steel faceplates and room temperature cured polyurethane elastomer core are commercial materials of SPS for ship structure [2,15].…”

Section: Introductionmentioning

confidence: 99%

“…FRPU composite has been applied as the core material of SPS because it meets LR criteria, including density, hardness, ultimate tensile strength, and elongation at break [17,18]. An extensive range of research studies about the application of sandwich structure on static behavior and weight-reduction investigation in the few structural part was introduced, such as in the ship deck [17,19,20], hull structure [10,18], and car deck [11,21,22], and other various structures. Brooking & Kennedy [15] conducted a Finite Element Analysis (FEA) on applying SPS to several flat plate constructions on tankers.…”

Section: Introductionmentioning

confidence: 99%

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Study of sandwich panel application on side hull of crude oil tanker

et al. 2021

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A lightweight sandwich plate system (SPS) consisted of steel faceplate and polyurethane elastomer composite cores have excellent potential to be applied on the ship structure. Steel faceplate and polyurethane elastomer (PU) cores are frequently applied, but PU has a relatively high material cost. More economical material can be achieved by combining PU with fiberglass as a fiberglass reinforced polyurethane elastomer (FRPU) composite. In this study, the sandwich consisting of steel faceplate and FRPU composite core material is applied in the tanker side hull by investigating the structural performance and weight saving analysis using finite element analysis (FEA). Four sandwich side hull models using different stiffener configurations are compared with the conventional stiffened plate model. The result shows the promising SPS application in terms of structural strength and weight savings. The remarkable stress reduction, deformation, and structural weight reduction due to SPS application are discussed. Therefore, its weight reduction can increase the ship payload so that ship operations will be cost-effective.

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