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Journal of Projectiles, Rockets, Missiles and Guidance >

2022 , Vol. 42 >Issue 1: 32 - 37

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2022.01.007

Numerical Simulation of LLM-105 Based Warhead Charge Cook-off Test

  • CHANG Shuangjun 1 ,
  • CHEN Sanli 2 ,
  • XU Junjie 1 ,
  • WU Hao 1 ,
  • REN Yongzheng 1
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  • 1 School of Environment and Safety Engineering, North University of China, Taiyuan 030051,China
  • 2 Computer Department, Taiyuan Normal University, Taiyuan 030619, China

Received date: 2021-08-11

  Online published: 2025-02-21

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Abstract

In order to study the thermal safety of the warhead charge based on the LLM-105, the simplified finite element model of the scaled warhead cook-off test was established. By applying FLUENT simulation software and combining with the Frank-Kamenetskii reaction model, the numerical simulation of cook-off test under different heating rates, shell thickness and buffer layer thickness were carried out. The results show that as the heating rate increases from 0.055 K/min to 10 K/min, the ignition temperature of the warhead charge decreases from 576.7 K to 537.7 K, meanwhile the ignition zone of the warhead charge transfers from the head to the junction between charge tail and the end cover. When the shell thickness increases from 10 mm to 20 mm, the charge ignition time is reduced by 214 s and the ignition temperature of the charge changed by 14 K.When the cook-off time is 13 000 s, different buffer thickness has little effect on ignition temperature and ignition region. The research results can provide technical support for evaluating the thermal safety of warhead charge of supersonic weapons.

Key words： warhead charge; thermal safety; finite element model; cook-off test; numerical simulation

Cite this article

CHANG Shuangjun , CHEN Sanli , XU Junjie , WU Hao , REN Yongzheng . Numerical Simulation of LLM-105 Based Warhead Charge Cook-off Test[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2022 , 42(1) : 32 -37 . DOI: 10.15892/j.cnki.djzdxb.2022.01.007

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