Multi-body Dynamics Analysis Method for Ejection Launching of Submarine-borne Missile Considering the Flexibility ofMissile Body and Its Canister

doi:10.3969/j.issn.1000-1093.2022.02.008

Abstract

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

CLC Number:

TJ762.4

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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