爆炸冲击载荷下航空铝合金平板动态响应数值分析方法

解江; 李翰; 周书婷; 郑金国; 冯振宇

doi:10.21656/1000-0887.370252

爆炸冲击载荷下航空铝合金平板动态响应数值分析方法

doi: 10.21656/1000-0887.370252

中国民航大学天津市民用航空器适航与维修重点实验室, 天津 300300

基金项目: 民航局安全能力建设项目（AADSA0019）

详细信息

作者简介:
解江（1982—），男，讲师，博士(通讯作者. E-mail: xiejiang5@126.com）.

中图分类号: O389;TG113
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出版历程
- 收稿日期: 2016-08-17
- 修回日期: 2016-10-11
- 刊出日期: 2017-04-15

A Numerical Method for Dynamic Responses of Aviation Aluminum Alloy Plates Under Blast Loads

Tianjin Key Laboratory of Civil Aircraft Airworthiness and Maintenance,Civil Aviation University of China, Tianjin 300300, P.R.China

摘要

摘要: 为得到适用于爆炸冲击载荷下航空铝合金平板动态响应的数值分析方法，采用LS-DYNA显式动力学分析软件对爆炸冲击载荷下的铝合金平板进行数值仿真计算.主要研究了不同的任意Lagrange-Euler(拉格朗日-欧拉)网格（ALE）输运步算法、流固耦合方式、流固耦合点数量、网格尺寸、有限元单元类型对计算结果的影响.通过计算结果与实验结果的分析对比，表明采用van Leer+HIS输运步算法、罚函数耦合方式、在流体网格与结构网格之间采用3个耦合点、结构网格尺寸与空气域网格尺寸比例设为2∶1、结构单元采用163号壳单元时可以较为准确地计算航空铝合金平板在爆炸冲击载荷下的动态响应,并且能提高计算效率，节约计算时间.
- 爆炸 /
- 数值仿真 /
- 任意Lagrange-Euler法 /
- 铝合金平板 /
- 流固耦合
Abstract: In order to explore the numerical analysis method suitable for dynamic responses of aviation aluminum alloy plates under explosive impact loads, numerical simulation of the aluminum alloy plate under explosion was carried out with the LSDYNA explicit dynamic analysis software. Influences of different advection steps of the arbitrary LagrangianEulerian method (ALE), the fluidstructure coupling mode, the number of coupling points, the mesh size and the finite element type on the numerical results were detailedly studied. Comparisons between the numerical results and the test results show that the dynamic responses of the aluminum alloy plate under explosive impact loading can be calculated accurately with the van Leer+HIS advection step, the penalty coupling method, 3 coupling points, a ratio of 2∶1 between the structure mesh size and the air mesh size, and the Shell163 element. Simultaneously, the calculation efficiency can be improved and computation time saved.
- explosion /
- numerical simulation /
- arbitrary Lagrangian-Eulerian method /
- aluminum alloy plate /
- fluid-structure interaction

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参考文献(16)

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