Low Temperature Effect on the Mechanical Properties of EH36 with Strain Rates

With the expansion of Arctic route, safety ship crossing area in light low temperature and ice has become focus, especially with regards to ship’s structure. The mechanical properties material making up structure may not be suitable for environment. A series quasi-static dynamic tests were performed investigate behaviour EH36 steel, which is used build ships, at temperatures ranging from 20 °C −60 °C. yield ultimate tensile stress increased more than 10% as decreased °C, whereas toughness decreased. formula was derived illustrate relationship between reduction strength by fitting experimental data. Four common constitutive rigid-perfectly plastic, elastic-perfectly bilinear elastic-plastic, multi-linear elastic plastic models fitted simulate hull under static loading temperature. Additionally, strain rate effect steel illustrated high-speed impact tests. model including introduced based on a modified Cowper-Symonds model, coefficients are test results. It improved an iterative numerical method obtain accurate using analyses. Detailed finite element simulations experiment conditions revealed that accurately predicts response temperatures.