블로우 사출 HDPE 해상부표의 전산구조해석에 관한 연구

Abstract

The problems of marine environmental pollution and environmental pollution by microplastics are becoming global issues. In the case of expanded polysterene (EPS), which is a major cause of marine environmental pollution, it also adversely affects the marine ecosystem, such as HBCDs (Hexabromocyclododecanes), a type of bromine-based flame retardant, and hepatotoxic agents in oysters farmed in farms using EPS buoys. Is struggling. In this study, to replace the EPS buoy, which is the main cause of pollution of the marine environment and the marine ecosystem, a buoy is produced through HDPE (Highdensitypolyethylene) blow injection to replace it. In the case of HDPE, it has superior physical properties such as tensile strength and impact strength than EPS, and it is believed that microplastic problems can be improved by taking advantage of these physical properties. Therefore, in this study, the Ansys Workbench 19.2 tool is used to check the deformation and performance changes caused by pressure and thermal environment in the environment of use of the buoy in consideration of the physical property change by the reprocessing process of HDPE generated during the blow injection molding process. To perform. The physical properties required for finite element analysis were checked for mechanical properties such as elastic modulus, yield strength, and maximum tensile strength in accordance with ASTM D 638 standard, and the thermal expansion coefficient was measured using a strain gauge. In the case of the target buoy, a study on the deformation and performance of the buoy is performed through nonlinear analysis in consideration of the nonlinearity of the material and the geometric shape change of the buoy.