FINITE-ELEMENT POSTBUCKLING ANALYSIS OF THIN ELASTIC PLATES

被引：19
作者：
MURRAY, DW
WILSON, EL
机构：
来源：
AIAA JOURNAL | 1969年 / 7卷 / 10期
关键词：
D O I：
10.2514/3.5481
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
A finite-element formulation for determining postbuckling response of thin elastic plates is presented. The method employs an iterative approach to arrive at equilibrium configurations. For each iterate, increments in displacements are estimated by formulating an approximate incremental stiffness matrix and solving the linearized incremental equilibrium equations. The approximate incremental stiffness is determined by combining a geometric stiffness with the stiffness of the unstressed, but displaced, structure. A method of deriving consistent geometric stiffness matricesfor two-dimensional plate elements is presented and the principal terms in this matrix are evaluated for triangular element. Results of the determination of postbuckling response for some typical plates are given.
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页码：1915 / &
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