冰载荷作用下不同航行体头型的力学响应分析  

Mechanical response analysis of different head types of a vehicle launched underwater under ice loads

作　　者：方登建 刁震霆 许可 FANG Dengjian;DIAO Zhenting;XU Ke(College of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,China;Unit 91515 of PLA,Sanya 57200,China)

机构地区：[1]海军工程大学兵器工程学院,武汉430033 [2]中国人民解放军91515部队,海南三亚572000

出　　处：《兵器装备工程学报》2025年第2期112-121,共10页Journal of Ordnance Equipment Engineering

摘　　要：为了分析冰载荷作用下不同航行体破冰出水过程中的力学状态,基于流固耦合算法,对半球型、锥型、流线型3种头型的航行体分别进行了建模,利用LS-DYNA求解器解析3种航行体在不同破冰偏移角度、不同头部材料下破冰过程中的力学响应特性。建模仿真计算发现,在垂向破冰时,半球型、锥型、流线型头部航行体的应力集中时间分别为0.016~0.058 s、0.008~0.015 s、0.008~0.022 s;航行体破冰时偏移角度越大,应力集中时间越长,当航行体以5.0°的偏移角度破冰时,半球型、锥形、流线型头部航行体应变最大值分别为0.71、0.56、0.64;锥型头部航行体的破冰能力最好,流线型头部航行体稍差,半球型头部航行体最差;钛合金材料与锥型头部航行体搭配时结构性能保持最好。In order to analyze the mechanical response of different vehicel launched underwater during ice breaking under loads,based on the fluid-solid coupling algorithm,the three types of heads,namely hemispherical,conical and streamlined,are modeled,and the LS-DYNA solver is used to analyze the mechanical response characteristics of the three types of heads in the process of icebreaking with different icebreaking offset angles and different head materials.The modeling simulations show that the stress concentration times of hemispherical,conical and streamlined heads are 0.016~0.058 s,0.008~0.015 s,0.008~0.022 s,respectively,during vertical icebreaking;the larger the offset angle of the navigational body,the longer the stress concentration time is,and the hemispherical,conical and streamlined heads strain during icebreaking at an offset angle of 5.0°.When the navigating body breaks the ice at 5.0°offset angle,the strain maximum values of hemispherical,conical,and streamlined head navigating bodies are 0.71,0.56,and 0.64,respectively;the conical head navigating body of the navigating body has the best ice-breaking ability,the streamlined head navigating body is a little bit poorer,and the hemispherical head navigating body is the worst;the titanium alloy material maintains the best structural performance when it is paired with the cone head navigating body.

关 键 词：航行体 冲击载荷 结构响应 LS-DYNA 垂向破冰 

分 类 号：TJ760.3[兵器科学与技术—武器系统与运用工程]