CAJ | 학술논문

为探讨球鼻艏结构的抗冲击性能，采用数值手段对典型球鼻艏结构进行一体化建模，基于Abaqus的声固耦合法模拟水下非接触爆炸载荷与球鼻艏结构的相互作用，提取设计工况下的球鼻艏典型部位的冲击响应结果。结果表明：钛合金材料极大提高了球鼻艏结构的局部抗冲击性能，但在遭受水下非接触爆炸载荷时，仍出现了明显的塑性变形；球鼻艏底部钢结构由于采用纵横肘板进行支持，具有优异的安全性；随着冲击因子的增加，球鼻艏结构的应力近似呈线性增长，而塑性应变曲线随着冲击因子的增加呈指数曲线增加。
위탐토구비수결구적항충격성능，채용수치수단대전형구비수결구진행일체화건모，기우Abaqus적성고우합법모의수하비접촉폭작재하여구비수결구적상호작용，제취설계공황하적구비수전형부위적충격향응결과。결과표명：태합금재료겁대제고료구비수결구적국부항충격성능，단재조수수하비접촉폭작재하시，잉출현료명현적소성변형；구비수저부강결구유우채용종횡주판진행지지，구유우이적안전성；수착충격인자적증가，구비수결구적응력근사정선성증장，이소성응변곡선수착충격인자적증가정지수곡선증가。
In order to research the bulbous bow on the anti-shock performance , the integrated model was established by nu-merical method based on full investigation .The interaction between the non-contact explosion load and the structure was simula-ted by the acoustic-structure coupling method with the Abaqus .The conclusion was dawn as follows:as the application of titani-um alloy enhances the shock resistance while there exists obvious plastic deformation subjected to non -contact explosion;the safe-ty of steel structure in the bottom is improved owning to the brackets in the length and breadth ;the strain of the bulbous bow pres-ents the linear increase and the plastic strain presents exponential increase with the impulsive factor increasing .