商用飞机撞击核电站屏蔽厂房数值模拟

刘晶波; 韩鹏飞; 郑文凯; 陆新征; 林丽

doi:10.11883/1001-1455(2016)03-0391-09

商用飞机撞击核电站屏蔽厂房数值模拟

doi: 10.11883/1001-1455(2016)03-0391-09

1.
清华大学土木水利学院土木工程系，北京 100084
2.
清华大学航天航空学院工程力学系，北京 100084

基金项目:

国家科技重大专项项目 2011ZX06002-10

详细信息

作者简介:
刘晶波(1956-)，男，博士，教授，liujb@tsinghua.edu.cn

中图分类号: O381
计量
- 文章访问数: 4450
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- PDF下载量: 475
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-28
- 修回日期: 2015-08-25
- 刊出日期: 2016-05-25

Numerical investigation of shield building for nuclear power plant subjected to commercial aircraft impact

1.
Department of Civil Engineering, School of Civil Engineering, Tsinghua University, Beijing 100084, China
2.
Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, China

摘要

摘要: 为研究大型商用飞机撞击核电站屏蔽厂房的毁伤特性，建立了Boeing 767商用飞机和双钢板混凝土屏蔽厂房的有限元模型，模拟两者的相互撞击作用过程，得到飞机不同部位(机身、发动机)对屏蔽厂房的撞击力时程曲线，对每一个作用部分给出简化撞击力曲线和作用面积，确定了撞击力分布形式。结果分析表明：飞机轴向网格尺寸对撞击力影响较大；屏蔽厂房被撞击部位变形明显，其他区域变形较小；撞击速度对撞击作用时间影响较小，而对结构响应位移影响很大，撞击力合力随着撞击速度的降低迅速下降。
- 固体力学 /
- 飞机撞击 /
- 有限元模型 /
- 屏蔽厂房 /
- 撞击力 /
- 分布形式
Abstract: To study damage characteristics of the shield building for nuclear power plant subjected to a large commercial aircraft impact, finite element models for Boeing 767 commercial aircraft impacting on a shield building made of steel-concrete-steel sandwich panels are established to simulate the impact process. The following results were achieved: the aircraft's axial mesh size greatly influences the impact force; some parts of the shield building hit by the aircraft undergo significant deformations while the deformation is smaller in the other parts; the impact velocity has little effect on the impact duration but a great effect on the structural response displacement, and the total impact force rapidly declines with the impact velocity decreasing. The impact force arising from different parts of the aircraft hitting the shield building are given, the simplified curve and the load area of different impact forces are obtained, which will contribute to the determination of the impact force distribution form, thus providing a positive help to the engineering design of shield buildings.
- solid mechanics /
- aircraft impact /
- shield building /
- finite element simulation /
- impact force /
- distribution form

HTML全文

图 1 核电站尺寸

Figure 1. Size nuclear power plant

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图 2 Boeing 767-200ER尺寸

Figure 2. Size of Boeing 767-200ER

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图 3 飞机撞击屏蔽厂房的模型

Figure 3. Model of the aircraft hitting a shield building

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图 4 飞机撞击刚性墙模型

Figure 4. Model of the aircraft impacting on a rigid wall

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图 5 轴向网格尺寸为0.25m的撞击力曲线

Figure 5. Impact force curves for the circular gridding size of 0.25 m

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图 6 环向网格为24份的撞击力曲线

Figure 6. Impact force curves for the axial gridding number of 24

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图 7 撞击过程的有限元模拟

Figure 7. Finite element simulation of the impacting process

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图 8 屏蔽厂房位移曲线

Figure 8. Curves showing the shield building's displacement

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图 9 撞击合力对比

Figure 9. Comparison of total impact force

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图 10 不同撞击速度对撞击合力的影响

Figure 10. Influence of impact velocity on total impact force

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图 11 飞机机身未破坏部分的速度对比

Figure 11. Velocity comparison of undamaged fuslage

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图 12 150m/s撞击速度下的屏蔽厂房位移曲线

Figure 12. Curves showing the shield building's displacement at the impact velocity of 150 m/s

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图 13 100m/s撞击速度下的屏蔽厂房位移曲线

Figure 13. Curves showing the shield building's displacement at the impact velocity of 100 m/s

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图 14 飞机撞击区域划分

Figure 14. Reginal division of aircraft impact

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15(a) 第1部分撞击力与全部撞击力对比

15(a). Comparison of the first part of impact force and total impact force

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15(b) 第2部分撞击力与全部撞击力对比

15(b). Comparison of the second part of impact force and total impact force

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15(c) 两部分撞击力叠加与全部撞击力对比

15(c). Comparison of the superposition of two parts of the impact force and total impact force

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表 1 计算参数

Table 1. Calculation parameters

材料	σ_y/MPa	σ_s/MPa	ρ/(kg·m^-3)	E/GPa	T/GPa	ν	C	P	ε_pe
钢	447	-	7850	210	5	0.3	5	40	0.8
铝合金	503	-	2810	71.9	0.5	0.33	4	6500	0.1
混凝土	-	48	2300	-	-	0.2	-	-	0.17

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