Crushing force analysis of a load calculation model for aircraft impact

被引：0

作者：

Han, Peng-Fei ^{[1
,2
]}

Liu, Jing-Bo ^{[1
]}

Lu, Xin-Zheng ^{[1
]}

Lin, Li ^{[3
]}

Cen, Song ^{[3
]}

机构：

[1] Department of Civil Engineering, School of Civil Engineering, Tsinghua University, Beijing,100084, China

[2] The Third Research Institute of Engineering Corps, General Staff of PLA, Luoyang,Henan,471023, China

[3] Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing,100084, China

来源：

Gongcheng Lixue/Engineering Mechanics | 2016年 / 33卷 / 02期

关键词：

Aircraft; -; Loads; (forces);

D O I：

10.6052/j.issn.1000-4750.2014.09.0808

中图分类号：

学科分类号：

摘要：

The Riera model is a simplified practical model for the calculation of aircraft impact load. The results of aircraft impact tests and numerical simulations are usually compared with the calculation results of this model in many studies. Since an impact load consists of a crushing force and an inertial force by introducing and analyzing this model, the crushing force is needed to be determined. In order to use the Riera model more reasonably, the existing formulas for crushing force calculations are summarized, but there is a great difference in the calculation results of crushing forces by using these formulas. And the comparison between the test data and calculation results by deformed length and impact time of projectile is also made to assess these formulas for crushing forces. The formulas, which are more suitable for crushing force calculation in aircraft impact cases, are given and the influence of crushing forces on impact loads is discussed. The crushing force should not be ignored with respect to inertial forces and it has a big influence on impact loads. © 2016, Engineering Mechanics Press. All right reserved.

引用

页码：81 / 87