Abstract
Abstract The governing equations for both symmetric and asymmetric wrinkling of sandwich panels are derived using operator notation. In each case differential systems of three equations in three unknowns are obtained and two of the three variables are eliminated by taking combinations of the equations. Whilst the mathematical techniques employed are straightforward, the expressions involved are lengthy and recourse is made to the computer algebra system MACSYMA, without which a solution for the asymmetric case would have been difficult to achieve. Explicit algebraic expressions are given for buckling loads which can be used by structural engineers to calculate allowable design loads for sandwich panels.
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