Fluid-structure Coupling Simulation Method for the Opening Process of Fragile Front Cover of Canister Launcher

doi:10.3969/j.issn.1000-1093.2021.08.010

Abstract

Abstract: The opening process of fragile front cover of canister launcher in the pressure wave is a typical fluid-structure interaction problem. In order to study this opening process, the static tensile and compression test，and the dynamic tensile and compression test are carried out on the polyurethane composite material of fragile front cover，respectively. The subroutine VUSDFLD is used to expand the concrete damage plasticity (CDP) constitutive model to describe the loading and cracking conditions of the fragile front cover. Based on the computational fluid dynamics (CFD) simulation results of the flow field in the canister launcher, an Euler’s method-based model of the same case is built and verified, and the opening process of the fragile front cover is simulated by the coupled Eulerian-Lagrangian (CEL) algorithm. It shows that the simulated results based on the developed CDP model are in good agreement with the experimental data; and the simulation method combining CFD and CEL algorithms can effectively solve the fluid-structure interaction problem of opening process of fragile front cover and has higher accuracy.

Key words: canisterlauncherfragilecover, polyurethane, concretedamageplasticity, coupledEulerian-Lagrangianalgorithm, fluid-structureinteraction

CLC Number:

TJ768.2⁺1

ZHANG Baozhen, WANG Hanping, DOU Jianzhong, CHENG Mengwen. Fluid-structure Coupling Simulation Method for the Opening Process of Fragile Front Cover of Canister Launcher[J]. Acta Armamentarii, 2021, 42(8): 1660-1669.

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