飞机撞击安全壳中航油爆炸耦联分析模型及影响研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (10) : 112-120.

论文

李建波1,2，牛燕如1,2，梅润雨1,2，孙运轮3

作者信息 +

Study on coupling analysis model and influence of aviation oil explosion for aircraft impact containment

LI Jianbo1,2，NIU Yanru1,2，MEI Runyu1,2，SUN Yunlun3

Author information +

文章历史 +

摘要

飞机撞击安全壳事件中，撞击载荷和航油爆炸载荷是需要耦合考虑的两种载荷。当前主要关注于单一的飞机撞击载荷作用，缺乏撞击-爆炸载荷耦合作用的分析和影响比较。为研究耦合作用下安全壳结构的动力响应差异，并提出可行的数值模型，本文基于飞机和安全壳细致的动力数值模型进行了全过程的耦合分析。首先以蒸气云爆炸的The Netherlands Organization（TNO）多能法模型来定量表示航油爆炸载荷；并基于钢筋混凝土板抗爆、抗弹体撞击的数值模型试验，验证了Riedel-Hiermaier-Thoma（RHT）本构模型在不同载荷形式下的通用性；最后采用精细化建模的A340-300大型商用飞机和某四代核反应堆安全壳模型，对比分析了单一载荷作用和撞击-爆炸耦合载荷作用下安全壳的位移时程和损伤分布规律。研究结果表明，对安全壳进行飞机撞击评价时进行撞击-爆炸耦合载荷作用的分析是十分必要的。基于文中模型，耦合载荷作用下的安全壳峰值位移响应，比考虑单一载荷作用的位移增加了约27 %。除此之外，安全壳的局部损伤破坏也有较大幅度的变化，与单一撞击载荷作用相比，耦合作用下损伤面积在机身撞击区域增加约142 %，在引擎撞击区域增加约72.8 %，且引擎撞击局部区域的损伤程度大幅增加。

Abstract

In the event of aircraft impacting on a containment structure, the coupling effect of the impact load and the explosion load caused by the aviation oil needs to be considered. Recent studies mainly focus on the effect of single impact load, however few analysis and comparisons of the coupling effect are presented. In order to study the dynamic response of containment structure subjected to the coupling effect and propose a feasible numerical model, a coupling analysis of the whole accident process is carried out based on the refined dynamic numerical model of the aircraft and the containment. The analysis firstly uses the TNO (The Netherlands Organization) multi-energy method for vapor cloud explosion to quantitatively represent the aviation oil explosion load. Then, the applicability of RHT constitutive model under different load types is verified based on the numerical model test of reinforced concrete slab anti-explosion and anti-missile impact. Finally, the refined numerical models of the A340-300 large commercial aircraft and the fourth-generation nuclear reactor containment are used to compare and analyze the displacement time history and damage distribution of the containment under the single load and the coupled impact-explosion load. The results show that it is very important to analyze the effect of the coupled impact-explosion load in the safety evaluation when the containment is impacted by an aircraft. Based on the model of this paper, the peak displacement under the coupled load is about 27 % higher than that under the single load. Besides, the local damage characteristics of the containment also have a relatively large change. Compared with the single impact load, the coupled load increases the damage area by about 142 % in the fuselage impact area and by about 72.8 % in the engine impact area, and the degree of damage in the local area where the engine impacts is greatly increased.

导出引用

李建波1,2，牛燕如1,2，梅润雨1,2，孙运轮3. 飞机撞击安全壳中航油爆炸耦联分析模型及影响研究[J]. 振动与冲击, 2023, 42(10): 112-120

LI Jianbo1,2，NIU Yanru1,2，MEI Runyu1,2，SUN Yunlun3. Study on coupling analysis model and influence of aviation oil explosion for aircraft impact containment[J]. Journal of Vibration and Shock, 2023, 42(10): 112-120

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