ZAMM 74, T712-T714, 1994


COUPLING EFFECTS IN LINEAR STRESS
AND BUCKLING ANALYSIS BY THE FINITE STRIP METHOD

X. Wang and F.G. Rammerstorfer

Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria


Abstract - The displacement functions in the finite strip method typically restrict the lateral motion at the loaded ends. In this article, a finite strip method is presented to release this restriction for plates under end compression. The phenomenon of coupling effects of the finite strip method is discussed and comparison is made between two types of problems: free lateral displacement is prevented completely or allowed freely. The single-term finite strip method normally employed in stability analysis has the advantage of economy, but in some cases it results in buckling loads which are much larger than the actual one. Numerical examples are carried out to show the scope of validity of single term solutions. An alternative and more versatile procedure is suggested to accurately predict buckling loads when the single term approach is invalid.


(hjb,960709)