数字海洋与水下攻防2025，Vol.8Issue(3)：277-290,14.DOI:10.19838/j.issn.2096-5753.2025.03.005
航行体高速入水冲击载荷诱导的结构内部响应特性研究
Study on Characteristics of Internal Structural Response of Underwater Vehicles Induced by High-speed Water Entry Impact Loads
摘要
Abstract
The high-speed water entry of underwater vehicles involves complex fluid-structure interactions and intense transient impact loads,which may induce structural failure.In this study,a numerical simulation model is established based on the STAR-CCM+and ABAQUS platforms,the RANS equations,VOF multiphase flow model,cavitation model,and Johnson-Cook constitutive model.The research reveals that the water entry impact induces stress waves propagating repeatedly within the structure to form stable guided waves.The axial force peak during forward wave propagation under compression effects significantly exceeds that during reverse propagation under tensile effects.Increased vertical entry velocity exacerbates stress concentration heterogeneity at the head section,causing a transition from compressive to tensile stress dominance and significantly amplifying axial force amplitudes across sections,while minimally affecting stress wave propagation speed.For oblique entry cases,structural asymmetry induces coupled axial-radial stress wave propagation.As the entry angle decreases,the wave transmission path transitions from zigzag to continuous diffusion patterns,resulting in stabilized axial force amplitudes and a bending moment trend characterized by initial increase followed by decrease.These findings provide critical insights for the design and protection of high speed water entry structures.关键词
高速入水/入水冲击/结构响应/流固耦合Key words
high-speed water entry/water entry impact/structural response/fluid-structure interaction分类
数理科学引用本文复制引用
白涛涛,雷鸣宇,安明明,刘涛涛,黄彪..航行体高速入水冲击载荷诱导的结构内部响应特性研究[J].数字海洋与水下攻防,2025,8(3):277-290,14.基金项目
空间物理重点实验室基金"航行体高速入水过程的流场持性及结构响应研究". （）
