考虑弹-筒柔性的潜载导弹弹射多体动力学分析方法

doi:10.3969/j.issn.1000-1093.2022.02.008

摘要/Abstract

摘要： 在潜载导弹垂直弹射过程中，导弹的姿态变化是关系其发射成败的关键。针对潜载导弹垂直弹射过程提出一种可同时考虑弹体和发射筒柔性的弹射发射动力学建模分析方法。运用改进的柔性点线高副模型来模拟适配器的抗压和抗弯载荷，基于弹体水动力、附连水惯性力的单元线性分布假设，利用Hermite形状函数将单元分布载荷等效简化为单元节点集中力，并编程实现加载。仿真结果表明：导弹姿态与实验数据吻合较好，验证了该分析方法可信、实用；该方法为同时考虑导弹弹体-发射筒柔性的潜射动力学建模提供了新思路，也为拓展柔性体之间接触的简化建模提供了新途径。

关键词: 潜射导弹, 垂直弹射, 柔性点线高副, 适配器, 形状函数, 多体动力学

Abstract: In the process of vertical launch of submarine-borne missile, the attitude of missile is the key to the successful launch. A dynamics analysis method for ejection launching of submarine-borne missile considering flexibility of missile body and its canister. An improved model of flexible point-to-curve high pair is used to simulate the compression and bending loads of the adapters. Based on the assumption of element linear distribution of hydrodynamic force and water inertial force attached to missile body, Hermite shape function is used to simplify the element distributed load to a concentrated force on element nodes, and the loading is realized by GFOSUB subroutine development. The simulated results are in good agreement with the experimental data, which proves the practicality and credibility of this method. The proposed method provides a new idea for modeling the ejection launching dynamics of submarine-borne missile considering the flexibility of missile body and its canister, and also gaves a new approach for the simplified modeling of contact between flexible bodies.

Key words: submarine-bornemissile, verticalejectionlaunch, flexiblepoint-to-curvehighpair, shapefunction, multi-bodydynamics

中图分类号:

TJ762.4

张子豪, 王汉平. 考虑弹-筒柔性的潜载导弹弹射多体动力学分析方法[J]. 兵工学报, 2022, 43(2): 305-315.

ZHANG Zihao， WANG Hanping. Multi-body Dynamics Analysis Method for Ejection Launching of Submarine-borne Missile Considering the Flexibility ofMissile Body and Its Canister[J]. Acta Armamentarii, 2022, 43(2): 305-315.

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