STRUCTURAL RESPONSE OF THIN CYLINDRICAL-SHELLS SUBJECTED TO IMPULSIVE EXTERNAL LOADS

被引：14
|
作者：
KIRKPATRICK, SW
HOLMES, BS
机构：
[1] SRI Int, Menlo Park, CA, USA, SRI Int, Menlo Park, CA, USA
来源：
AIAA JOURNAL | 1988年 / 26卷 / 01期
关键词：
MATHEMATICAL TECHNIQUES - Finite Element Method - STRESSES - Analysis;
D O I：
10.2514/3.9856
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Thin aluminum cylindrical rings and shells were subjected to impulsive external loads applied with explosives. Experimentally observed structural response mechanisms consisted of dynamic pulse buckling and large inward deflection of the loaded side of the shell. This structural response was analyzed with the DYNA3D finite-element code. Finite-element modeling of the response required modeling of initial imperfections in the geometry of the rings and shells and modeling of imperfections in the load in order to reproduce the observed buckling response. The effects of finite-element mesh refinement, initial imperfection amplitude, and imperfections in load are investigated. Methods for obtaining good solutions to this pulse buckling problem with finite-element codes have been noted.
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页码：96 / 103
页数：8
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