Modeling of the Temperature-Dependent and Strain Rate-Dependent Dynamic Behavior of Glass Fiber-Reinforced Polyurethane Foams

The purpose of this study was to establish a numerical model of polyurethane foam (PUF) to simulate the dynamic response and strength of membrane-type Liquefied natural gas (LNG) Cargo containment system (CCS) under the impact load. To do this, initially, the visco-plastic behavior of PUF was charac...

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Bibliographic Details
Published inHan-guk haeyang gonghak hoeji (Online) Vol. 33; no. 6; pp. 547 - 555
Main Authors Lee, Dong-Ju, Shin, Sang-Beom, Kim, Myung-Hyun
Format Journal Article
LanguageEnglish
Published The Korean Society of Ocean Engineers 31.12.2019
Subjects
dry drop test
dynamic strength
fea
material model
polyurethane foam
sloshing
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Summary:The purpose of this study was to establish a numerical model of polyurethane foam (PUF) to simulate the dynamic response and strength of membrane-type Liquefied natural gas (LNG) Cargo containment system (CCS) under the impact load. To do this, initially, the visco-plastic behavior of PUF was characterized by testing the response of the PUF to the impact loads with various strain rates as well as PUF densities at room temperature and at cryogenic conditions. A PUF material model was established using the test results of the material and the FE analysis. To verify the validation of the established material model, simulations were performed for experimental applications, e.g., the dry drop test, and the results of FEA were compared to the experimental results. Based on this comparison, it was found that the dynamic response of PUF in dry drop tests, such as the reaction force and fracture behaviors, could be simulated successfully by the material model proposed in this study.
ISSN:1225-0767
2287-6715
DOI:10.26748/KSOE.2019.025